2012 Integrated Resource Plan. Appendix. Portfolio Results

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1 Appendix 6A Portfolio Results

2 Table of Contents 1 Introduction Layout of the Portfolio Output Sheets Natural Gas-Fired Generation Modelling Assumptions Portfolio Output - Natural Gas-Fired Generation... 8 M2M_AYC_KN0_000_T_output_AA_EL_N... 8 M2M_BYC_KN0_000_T_output_AA_EL_N M2M_CYC_KN0_000_T_output_AA_EL_N M2M_DYC_KN0_000_T_output_AA_EL_N M2M_EYC_KN0_000_T_output_AA_EL_N M2M_AFT_KN0_C00_T_output_AA_EL_N M2M_BFT_KN0_C00_T_output_AA_EL_N M2M_CFT_KN0_C00_T_output_AA_EL_N M2M_DFT_KN0_C00_T_output_AA_EL_N M2M_EFT_KN0_C00_T_output_AA_EL_N M2M_AFT_KN0_800_T_output_AA_EL_N M2M_BFT_KN0_800_T_output_AA_EL_N M2M_CFT_KN0_800_T_output_AA_EL_N M2M_DFT_KN0_800_T_output_AA_EL_N M2M_EFT_KN0_800_T_output_AA_EL_N Page 6A- May 2012

3 4 Demand-Side Measures Additional Results Modelling Assumptions Portfolio Output Demand-Side Measures DSM_MktB_LargeGap H1L_BYT_KN0_100_T_output_AA_EL_N H2L_BYT_KN0_100_T_output_AA_EL_N H3L_BYT_KN0_100_T_output_AA_EL_N H4L_BYT_KN0_100_T_output_AA_EL_N H5L_BYT_KN0_100_T_output_AA_EL_N DSM_MktB_SmallGap L1H_BXC_KN0_000_T_output_AA_EL_N L2H_BXC_KN0_000_T_output_AA_EL_N L3H_BXC_KN0_000_T_output_AA_EL_N L4H_BXC_KN0_000_T_output_AA_EL_N L5H_BXC_KN0_000_T_output_AA_EL_N DSM_MktB_MidLoad_MidSaving (MidGap) M1M_BYC_KN0_000_T_output_AA_EL_N M2M_BYC_KN0_000_T_output_AA_EL_N M3M_BYC_KN0_000_T_output_AA_EL_N M4M_BYC_KN0_000_T_output_AA_EL_N M5M_BYC_KN0_000_T_output_AA_EL_N DSM_MktB_MidLoad_HighSaving M1H_BYC_KN0_000_T_output_AA_EL_N M2H_BYC_KN0_000_T_output_AA_EL_N M3H_BYC_KN0_000_T_output_AA_EL_N M4H_BFC_KN0_000_T_output_AA_EL_N M5H_BFC_KN0_000_T_output_AA_EL_N Page 6A- May 2012

4 DSM_MktB_MidLoad_LowSaving M1L_BYT_KN0_100_T_output_AA_EL_N M2L_BYT_KN0_100_T_output_AA_EL_N M3L_BYT_KN0_100_T_output_AA_EL_N M4L_BYT_KN0_100_T_output_AA_EL_N M5L_BYT_KN0_100_T_output_AA_EL_N DSM_MktC_LargeGap H1L_CYT_KN0_100_T_output_AA_EL_N H2L_CYT_KN0_100_T_output_AA_EL_N H3L_CYT_KN0_100_T_output_AA_EL_N H4L_CYT_KN0_100_T_output_AA_EL_N H5L_CYT_KN0_100_T_output_AA_EL_N DSM_MktC_SmallGap L1H_CXC_KN0_000_T_output_AA_EL_N L2H_CXC_KN0_000_T_output_AA_EL_N L3H_CXC_KN0_000_T_output_AA_EL_N L4H_CXC_KN0_000_T_output_AA_EL_N L5H_CXC_KN0_000_T_output_AA_EL_N DSM_MktC_MidLoad_MidSaving (MidGap) M1M_CYC_KN0_000_T_output_AA_EL_N M2M_CYC_KN0_000_T_output_AA_EL_N M3M_CYC_KN0_000_T_output_AA_EL_N M4M_CYC_KN0_000_T_output_AA_EL_N M5M_CYC_KN0_000_T_output_AA_EL_N DSM_MktC_MidLoad_HighSaving M1H_CYC_KN0_000_T_output_AA_EL_N M2H_CYC_KN0_000_T_output_AA_EL_N M3H_CYC_KN0_000_T_output_AA_EL_N M4H_CFC_KN0_000_T_output_AA_EL_N M5H_CFC_KN0_000_T_output_AA_EL_N Page 6A- May 2012

5 DSM_MktC_MidLoad_LowSaving M1L_CYT_KN0_100_T_output_AA_EL_N M2L_CYT_KN0_100_T_output_AA_EL_N M3L_CYT_KN0_100_T_output_AA_EL_N M4L_CYT_KN0_100_T_output_AA_EL_N M5L_CYT_KN0_100_T_output_AA_EL_N Site C Modelling Assumptions Portfolio Output - Site C Site C_with Site C H2L_AFT_KN0_100_T_output_AA_EL_N H2L_BFT_KN0_100_T_output_AA_EL_N H2L_CFT_KN0_100_T_output_AA_EL_N H2L_DFT_KN0_100_T_output_AA_EL_N H2L_EFT_KN0_100_T_output_AA_EL_N L2H_AFC_KN0_000_T_output_AA_EL_N L2H_BFC_KN0_000_T_output_AA_EL_N L2H_CFC_KN0_000_T_output_AA_EL_N L2H_DFC_KN0_000_T_output_AA_EL_N L2H_EFC_KN0_000_T_output_AA_EL_N M2M_AFC_KN0_000_T_output_AA_EL_N M2M_BFC_KN0_000_T_output_AA_EL_N M2M_CFC_KN0_000_T_output_AA_EL_N M2M_DFC_KN0_000_T_output_AA_EL_N M2M_EFC_KN0_000_T_output_AA_EL_N Site C_without Site C H2L_ANT_KN0_100_T_output_AA_EL_N H2L_BNT_KN0_100_T_output_AA_EL_N H2L_CNT_KN0_100_T_output_AA_EL_N H2L_DNT_KN0_100_T_output_AA_EL_N H2L_ENT_KN0_100_T_output_AA_EL_N L2H_ANC_KN0_000_T_output_AA_EL_N Page 6A- May 2012

6 L2H_BNC_KN0_000_T_output_AA_EL_N L2H_CNC_KN0_000_T_output_AA_EL_N L2H_DNC_KN0_000_T_output_AA_EL_N L2H_ENC_KN0_000_T_output_AA_EL_N M2M_ANC_KN0_000_T_output_AA_EL_N M2M_BNC_KN0_000_T_output_AA_EL_N M2M_CNC_KN0_000_T_output_AA_EL_N M2M_DNC_KN0_000_T_output_AA_EL_N M2M_ENC_KN0_000_T_output_AA_EL_N Site C_Sensitivity M2M_AFT_KN0_800_T_output_AA_EL_N M2M_BFT_KN0_800_T_output_AA_EL_N M2M_DFT_KN0_800_T_output_AA_EL_N M2M_CFT_KN0_850_T_output_AA_EL_N M2M_EFT_KN0_850_T_output_AA_EL_N North Coast Modelling Assumptions Portfolio Output - North Coast M2M_BYC_BN0_000_T_output_AA_EL_N M2M_BYT_BN0_200_T_output_AA_EL_N M2M_BYC_TN0_000_T_output_AA_EL_N M2M_BYT_TN0_200_T_output_AA_EL_N M2M_CYC_BN0_000_T_output_AA_EL_N M2M_CYT_BN0_200_T_output_AA_EL_N M2M_CYC_TN0_000_T_output_AA_EL_N M2M_CYT_TN0_200_T_output_AA_EL_N M2M_CYT_BN0_E00_T_output_AA_EL_N Page 6A- May 2012

7 7 General Electrification Modelling Assumptions Portfolio Output- General Electrification M2M_CYT_BH8_25N_T_output_AA_EL_N IPP Acquisition Modelling Assumptions Portfolio Output - IPP Acquisition IPP_set1 M3M_CYC_KN0_G00_T_output_AA_EL_N M3M_CYC_KN0_I00_T_output_AA_EL_N M3M_CYC_KN0_J00_T_output_AA_EL_N IPP_set2 M2M_ANC_KN0_000_T_output_AA_EL_N M2M_BNC_KN0_000_T_output_AA_EL_N M2M_CNC_KN0_000_T_output_AA_EL_N M2M_DNC_KN0_000_T_output_AA_EL_N M2M_ENC_KN0_000_T_output_AA_EL_N IPP_set3 M2M_CYC_KN0_000_T_output_AA_EL_N M2M_CYC_KN0_001_T_output_AA_EL_N M2M_CYC_KN0_002_T_output_AA_EL_N Page 6A- May 2012

8 9 Transmission Modelling Assumptions Portfolio Output - Transmission M2M_CYC_KN0_050_T_output_AA_EL_N M2M_CYC_KN0_054_T_output_AA_EL_N M2M_CYC_KN0_05N_T_output_AA_EL_N H2L_CYT_KN0_F00_T_output_AA_EL_N M2M_CYT_KN0_F00_T_output_AA_EL_N Capacity and Contingency Analysis Modelling Assumptions Portfolio Output - Capacity and Contingency Analysis M2M_BYC_KN0_000_T_output_AA_EL_N M2M_BYT_KN0_100_T_output_AA_EL_N M2M_CYC_KN0_000_T_output_AA_EL_N M2M_CYT_KN0_100_T_output_AA_EL_N L2H_BXC_KN0_000_T_output_AA_EL_N L2H_BYT_KN0_100_T_output_AA_EL_N L2H_CXC_KN0_000_T_output_AA_EL_N L2H_CYT_KN0_100_T_output_AA_EL_N Page 6A- May 2012

9 List of Figures Figure 1 Modelling Map Natural Gas-Fired Generation... 7 Figure 2 Portfolio Costs across DSM Options (Savings Comparison, Market C Results) Figure 3 Portfolio Costs across DSM Options (Savings Comparison, Market B Results) Figure 4 Portfolio Costs across DSM Options (Gaps Comparison, Market B Results) Figure 5 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, post-dsm Regulation amendment, Gap Comparison, Market C Results) Figure 6 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, post-amendment, Gap Comparison, Market B Results) Figure 7 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, post-amendment, Savings Comparison, Market B Results) Figure 8 Modelling Map DSM Figure 9 Modelling Map Site C Figure 10 Modelling Map North Coast List of Tables Table 1 Transmission Region and Cluster Region Abbreviations... 5 Table 2 Summary of Load and Supply Assumptions for Combined Electrification Analysis Page 6A- May 2012

10 1 Introduction Chapters 5 and 6 of the Integrated Resource Plan (IRP) discuss the approach, key input assumptions and, high level analysis results that underpin the Recommended Actions in the IRP Action Plan. This Appendix presents additional results and provides supporting details of the portfolios created for the IRP analysis. These portfolios are organized by topics consistent with the structure of Chapter 6. 2 Layout of the Portfolio Output Sheets Chapter 5 describes the approach and key input assumptions used to create portfolios. Chapter 6 presents the high level analysis results. For each of the portfolios created and discussed in Chapter 6, a set of portfolio output sheets was produced and included in this Appendix. Each set of portfolio output sheets contains the following information: (a) Input Assumptions the top section of the first page of each portfolio output sheets is a set of tables showing key modelling input assumptions. Load: Low, mid or high load forecast. Assumptions on liquefied natural gas (LNG) loads and other incremental load scenarios are described in the table on the same row under the heading, Other. DSM 1 : DSM Options 1 to 5; with low, mid or high saving levels. Combination of the Load and DSM assumptions defines the gap sizes. Market Scenario: Market Scenarios A to E, with different natural gas, electricity, GHG and REC price forecasts. Site C: The inclusion or exclusion of Site C as a resource option. Thermal Resources: The inclusion or exclusion of natural gas-fired generation as a resource option. The type of gas resource option modelled 1 DSM: Demand-Side Measures Page 6A-1 of 304

11 and specific assumptions used are described in the table on the same row under the heading, Other. Other: Additional details on input assumptions; for examples: Initial LNG + LNG3 refers to the load included and considered in the portfolio; No HRB/FN refers to the Horn River Basin/ Fort Nelson load scenario excluded in this portfolio; G.E.3 means that the general electrification load scenario corresponding to High GHG reduction scenario is included; Gas as Capacity Near Term refers to the use of gas-fired generation (SCGTs) 2 as a near-term bridging option;; SCGT w 93% KL means that SCGTs located in Kelly Lake Region are modelled as resource options but limited to the 7% non-clean headroom available given the 93% clean objective; no PSH means pumped storage hydro are not included as options; 20 Years or 30 Years refers to the study period of the portfolio; 10 Wind adder means a $10/MWh wind integration cost added is modelled; Bundle refers to one of the two transmission build out approach being assumed in portfolio analysis; the alternate approach is Cluster. See IRP section for more details on the build out approaches. (b) Present Value (PV) of the Portfolio Cost immediately below the Input Assumptions tables, on the left of the portfolio output sheet is a table showing PV of portfolio costs broken down by cost components. The analysis of portfolio costs is performed in the System Optimizer (SO). Appendix 5C provides 2 SCGT: Simple-Cycle GasTurbine Page 6A-2 of 304

12 additional discussions on Resource Planning Models. The SO model analyses are done in calendar year, as such, the resultant portfolio costs are presented in calendar year. As described in IRP section 5.3, 20-year portfolio covers the costs from year to, whereas 30-year portfolio covers the costs from year to 2040; The PVs as shown are calculated by discounting all cash flows to as base year and presented in $ constant dollars. The PVs are broken down into three components: generation and transmission resource costs (incremental resources), trade revenue (from spot market) and DSM Option cost. The aggregated sum of these is the Total Portfolio Cost. Two sets of numbers are shown, reflecting two views of DSM Option cost (i.e., one corresponding to the Net DSM Cost incorporating the deemed benefits as defined in the DSM Regulation amendment, and one corresponding to the unadjusted Gross DSM cost). The two views of DSM costs are explained in the IRP Report section In general, the PV numbers quoted in Chapter 6 are Total Portfolio Costs with gross DSM costs. The use of either gross or net DSM costs is generally inconsequential in comparing portfolios because most of the issues are analyzed given the same DSM option where DSM cost would cancel out. An exception is in cases where DSM options are compared against each other. In analyses where DSM options are compared, Total Portfolio Costs with net DSM have been presented as discussed in IRP section 6.3. The Total Portfolio Costs presented in section 6.10 differ from the Total Portfolio Costs on the portfolio output sheets because further adjustments for short-term capacity costs are made (refer to section 10 of this Appendix for more information; refer to IRP section 5.3 for the assumptions used in calculating the Total Portfolio Costs on the portfolio output sheets). Page 6A-3 of 304

13 (c) Resource Mix - immediately below the PV table, and on the left of the portfolio output sheet are tables showing the total dependable capacity and firm energy for future supply-side resources (i.e., incremental supply) selected for the period through, through, and through (or through 2040 in the case of 30-year portfolio). The resources selected by the SO model are broken down into the resource categories of Wind, Run of River, Other and Site C 3. The Other category includes resources such as Revelstoke 6, pumped storage, thermal, and biomass. (d) DSM Level - immediately below the Resource Mix tables is a table showing the level of DSM savings assumed in the model; DSM savings are presented in energy savings achieved by and, with the associated capacity savings in the corresponding timeframes. The level of savings shown are at customer meter and do not include estimates of transmission loss savings. (e) Clean Objective (%) immediately below the DSM Level table is a table summarizing the statistics (%) of clean resources in relation to total resources for the planning period. The information presented based on simulated generation and planned firm energy contribution. The two columns are showing the two measures of the relative portions (percentages) taken up by clean resources in total resources: annual averages over the planning period and the lowest annual percentages. (f) Transmission Expansion immediately below the Clean Objective table is a list of incremental transmission options/resources selected for the portfolio and the corresponding timing. Detailed description of the transmission options can be found in Appendix 6F. The transmission region and cluster region abbreviations used in the output sheets are listed in Table 1. 3 Note that the firm energy for Site C is about 4,700 GWh but 5,100 GWh (based on average water condition) is presented here to reflect the expected planning contribution from Site C on the Load Resource Balance. Page 6A-4 of 304

14 Table 1 Transmission Region and Cluster Region Abbreviations Transmission Region CI Central Interior EK East Kootenay KN Kelly/ Nicola LM Lower Mainland NC North Coast PR Peace River SE Selkirk VI - Vancouver Island MCA Mica REV Revelstoke Cluster Region DLK Dease Lake TGC Telegraph Creek BQN Bob Quinn Lake HCT - Hecate NVI North Vancouver Island KTI Knight Inlet BUI Bute Inlet LRD - Liard FTN Fort Nelson NPR North Peace River (g) Resources Selected - the right side of the page, below the Input Assumptions tables is a list that displays future/incremental supply-side resources selected by the SO model. Year: the year in which the resource is selected by the SO model. Zone: the transmission region/zone within which the resource is located (see Table 1 for an explanation of the abbreviations). Resource: description of the resource selected. ROR refers to run-of-river hydro; MSW refers to municipal solid waste; WBBio refers to wood-based biomass. In instances where multiple gas units are selected in a single year by the SO model, the impact of these gas-fired generation resources is aggregated and shown as a single line item. Capacity: installed capacity and dependable capacity (effective load carrying capability, i.e., ELCC, is shown for small hydro and wind resources). Energy: Total (i.e., average) energy and firm energy. UEC/UCC: the unit energy cost (UEC) and unit capacity cost (UCC) are shown for each selected energy-rich and capacity-rich resource respectively Page 6A-5 of 304

15 for high level comparison. The UECs for gas resources shown in the output sheets reflect the levelized costs over 20 years based on prices from the market scenario assumed in each portfolio and the fixed assumption on resource utilization. These levelized costs are indicative and are provided for illustration purpose. More sophisticated calculations are used to estimate the portfolio PV. (h) Four Graphs: Results of each portfolio are concluded by four graphs illustrating the following aspects in the entire resource stack (i.e., including existing, committed, planned and incremental/future resources): Dependable Capacity Supply/Demand Balance: shows the annual peak demand after DSM compared to the stack of capacity (dependable capacity/elcc) from supply-side resources which has been adjusted/reduced to reflect/account for system reserve margin requirements. Firm Energy Supply/Demand Balance: shows the annual energy load after DSM is compared to the stack of firm energy capability from supply side resources. The percentage of clean resources over total resources based on firm energy capability is also shown for each year. Simulated Generation and Load: shows the annual energy load after DSM is compared to the stack of simulated generation. The percentage of clean simulated generation over total simulated generation is also shown for each year. Spot Market Imports and Exports: shows the energy purchase (import) and sale (export) simulated by the SO model, as well as the annual net energy export throughout the study period. Page 6A-6 of 304

16 3 PORTFOLIO ANALYSIS Natural Gas-Fired generation 3.1 Modelling Assumptions Figure 1 illustrates the modelling assumptions used to create the 15 portfolios discussed in section 6.2. Figure 1 Modelling Map Natural Gas-Fired Generation 3.2 Portfolio Output The portfolio output sheets of these portfolios are included on the following pages. Page 6A-7 of 304

17 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 8,309 8,309 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,835) (3,835) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,329 7,450 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_NC ROR_T1R1_70-100_NC Supply Totals through BCH_KN ROR_T1R1_80-100_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 918 3, ,707 BCH_PR Wind_PC BCH_EK ROR_T1R1_80-100_EK Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_REV Revelstoke Unit Dep. Capacity (MW) ,643 1,100 3,393 BCH_KN ROR_T1R1_ _KN Firm Energy (GWh) 5,337 5,199 1,428 5,100 17, BCH_VI WBBio_VI BCH_BQN ROR_T1R1_ _BQL BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_VI Wind_VI ,230 GWh 1,578 MW BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_LM ROR_T1R1_ _LM , Lowest % 98% 95% BCH_REV ROR_T1R1_90-110_REV BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_NC WBBio_PG Year Project Description Between Capacity (MW) BCH_SE WBBio_WK Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_VI ROR_T1R1_ _VI ,319 1, Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_AYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-8 of 304

18 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 110% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh Spot Market Imports and Exports % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_AYC_KN0_000 Page 6A-9 of 304

19 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,553 7,553 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,509) (2,509) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,899 8,020 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,493 2,004 1, ,562 BCH_VI WBBio_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) ,661 1,100 4,116 BCH_SE WBBio_WK Firm Energy (GWh) 3,200 2,605 1,572 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_LM ROR_T1R1_90-100_LM BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-10 of 304

20 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 97% 96% 96% 97% 97% 97% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BYC_KN0_000 Page 6A-11 of 304

21 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,578 6,578 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (975) (975) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,458 8,579 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 1,596 1,885 1, ,547 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) ,707 1,100 4,146 BCH_SE WBBio_WK Firm Energy (GWh) 3,303 2,004 1,934 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_NC WBBio_PG ,230 GWh 1,578 MW BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-12 of 304

22 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CYC_KN0_000 Page 6A-13 of 304

23 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 8,998 8,998 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,717) (4,717) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,135 7,256 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,643 1,100 3,401 BCH_VI WBBio_VI Firm Energy (GWh) 5,531 4,888 1,428 5,100 16, BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , DSM Level in: BCH_KN ROR_T1R1_ _KN ,532 GWh 1,161 MW BCH_EK ROR_T1R1_80-100_EK ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_SE WBBio_WK Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 96% 96% BCH_PR Wind_PC Lowest % 93% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG Transmission Expansion BCH_VI Wind_VI Year Project Description Between Capacity (MW) BCH_VI ROR_T1R1_ _VI ,319 1, Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_DYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-14 of 304

24 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 96% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 98% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DYC_KN0_000 Page 6A-15 of 304

25 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,591 6,591 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (988) (988) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,458 8,579 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 2,372 1, ,564 BCH_VI WBBio_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) ,707 1,100 4,153 BCH_PR Wind_PC Firm Energy (GWh) 3,431 1,885 1,934 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_NC WBBio_PG DSM Level in: BCH_KN WBBio_KM ,532 GWh 1,161 MW BCH_SE WBBio_WK ,230 GWh 1,578 MW BCH_EK WBBio_EK BCH_VI Wind_VI BCH_PR Wind_PC BCH_KN ROR_T1R1_70-80_KN Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_EYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-16 of 304

26 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 98% 99% 99% 99% 100% 100% 100% 100% 100% 100% 100% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_EYC_KN0_000 Page 6A-17 of 304

27 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 8,167 8,167 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,715) (3,715) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,306 7,427 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_NC ROR_T1R1_70-100_NC BCH_VI WBBio_VI Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,643 1,100 3,397 BCH_KN ROR_T1R1_80-100_KN Firm Energy (GWh) 5,531 4,775 1,428 5,100 16, BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , DSM Level in: BCH_EK ROR_T1R1_80-100_EK ,532 GWh 1,161 MW BCH_LM ROR_T1R1_ _LM , ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_NC WBBio_PG BCH_SE WBBio_WK BCH_VI Wind_VI Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_AFT_KN0_C00 Other Initial LNG, No HRB/FN Load, 250 MW CCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-18 of 304

28 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 110% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh Spot Market Imports and Exports % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_AFT_KN0_C00 Page 6A-19 of 304

29 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 7,465 7,465 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,625) (2,625) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,695 7,816 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_KN BCH_CCGT250KN ,450 1, Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 536 2,390 1, ,561 BCH_REV Revelstoke Unit BCH_PR Wind_PC Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) ,943 1,100 3,397 BCH_LM 1000 MW PS_LM , Firm Energy (GWh) 3,167 2,390 3,720 5,100 14, BCH_PR Wind_PC BCH_SE WBBio_WK BCH_VI WBBio_VI BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_NC WBBio_PG BCH_KN WBBio_KM BCH_EK WBBio_EK Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 96% 94% Lowest % 94% 94% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BFT_KN0_C00 Other Initial LNG, No HRB/FN Load, 250 MW CCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-20 of 304

30 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 96% 95% 95% 94% 95% 96% 96% 95% 95% 96% 96% 95% 95% 95% 96% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BFT_KN0_C00 Page 6A-21 of 304

31 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 6,228 6,228 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (966) (966) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,116 8,237 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN BCH_CCGT250KN ,450 1, Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_REV Revelstoke Unit Firm Energy (GWh) 731 1,438 2, ,557 BCH_PR Wind_PC BCH_VI WBBio_VI Supply Totals through BCH_SE WBBio_WK Wind Run of River Other Site C Total Avg. UEC BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) ,834 1,100 4,207 BCH_LM 1000 MW PS_LM , Firm Energy (GWh) 2,356 2,004 2,852 5,100 12, BCH_PR Wind_PC BCH_KN ROR_T1R1_70-80_KN BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_NC ROR_T1R1_70-100_NC ,230 GWh 1,578 MW BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 94% Lowest % 96% 94% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_CFT_KN0_C00 Other Initial LNG, No HRB/FN Load, 250 MW CCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-22 of 304

32 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 97% 97% 97% 96% 97% 97% 98% 98% 98% 98% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CFT_KN0_C00 Page 6A-23 of 304

33 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 8,956 8,956 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,775) (4,775) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,035 7,156 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_KN BCH_CCGT250KN ,450 1, Firm Energy (GWh) 0 2,605 2, ,681 BCH_REV Revelstoke Unit BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_VI WBBio_VI Dep. Capacity (MW) ,795 1,100 3,396 BCH_PR Site C ,100 5,100 5, Firm Energy (GWh) 4,295 4,034 2,540 5,100 15, BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_KN ROR_T1R1_ _KN DSM Level in: BCH_EK ROR_T1R1_80-100_EK ,532 GWh 1,161 MW BCH_LM ROR_T1R1_ _LM , ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 94% 94% BCH_PR Wind_PC Lowest % 93% 94% BCH_REV ROR_T1R1_90-110_REV Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_DFT_KN0_C00 Other Initial LNG, No HRB/FN Load, 250 MW CCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-24 of 304

34 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 94% 94% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DFT_KN0_C00 Page 6A-25 of 304

35 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 5,939 5,939 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (706) (706) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,088 8,209 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN BCH_CCGT250KN ,450 1, Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_VI WBBio_VI Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_REV Revelstoke Unit Firm Energy (GWh) 1,111 1,438 2, ,625 BCH_PR Wind_PC BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) , ,495 BCH_LM 1000 MW PS_LM , Firm Energy (GWh) 6,560 2,605 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI DSM Level in: BCH_NC WBBio_PG ,532 GWh 1,161 MW BCH_SE WBBio_WK ,230 GWh 1,578 MW BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_70-80_KN Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_LM ROR_T1R1_90-100_LM Average % 97% 94% BCH_PR Wind_PC Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC Transmission Expansion BCH_KN ROR_T1R1_80-100_KN Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M2M_EFT_KN0_C00 Other Initial LNG, No HRB/FN Load, 250 MW CCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-26 of 304

36 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 6000 Spot Market Imports and Exports % 98% 99% 97% 97% 97% 97% 97% 97% 97% 97% 98% 97% 97% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_EFT_KN0_C00 Page 6A-27 of 304

37 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 8,115 8,115 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,664) (3,664) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,306 7,427 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_NC ROR_T1R1_70-100_NC BCH_VI WBBio_VI Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,643 1,100 3,397 BCH_KN ROR_T1R1_80-100_KN Firm Energy (GWh) 5,531 4,775 1,428 5,100 16, BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , DSM Level in: BCH_EK ROR_T1R1_80-100_EK ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_LM ROR_T1R1_ _LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_SE WBBio_WK Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_AFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-28 of 304

38 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 110% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh Spot Market Imports and Exports % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_AFT_KN0_800 Page 6A-29 of 304

39 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 7,577 7,577 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,645) (2,645) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,787 7,908 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,029 BCH_VI WBBio_VI Firm Energy (GWh) 1,002 2,390 1, ,597 BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) ,584 1,100 3,960 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 1,383 3,559 2,408 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN DSM Level in: BCH_KN 100 MW SCGT KN ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_KN ROR_T1R1_80-100_KN BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 96% 95% Lowest % 95% 94% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Shunt Compenstation NIC MDN KN to LM 570 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-30 of 304

40 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 95% 96% 96% 96% 95% 95% 95% 95% 94% 94% 94% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 96% 96% 97% 97% 96% 97% 97% 97% 97% 96% 96% 96% 95% 95% 95% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BFT_KN0_800 Page 6A-31 of 304

41 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 6,058 6,058 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (700) (700) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,213 8,333 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,045 BCH_VI WBBio_VI Firm Energy (GWh) 1,525 1,885 1, ,616 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_KN 100 MW SCGT KN Dep. Capacity (MW) , ,371 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 6,450 2,605 3, , BCH_VI Wind_VI BCH_KN 100 MW SCGT KN ,050 1, BCH_PR Wind_PC BCH_KN 100 MW SCGT KN DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_NC WBBio_PG ,230 GWh 1,578 MW BCH_SE WBBio_WK BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_90-100_LM Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 94% BCH_PR Wind_PC Lowest % 97% 93% BCH_NC ROR_T1R1_70-100_NC BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Shunt Compenstation NIC MDN KN to LM 570 Line 1150 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M2M_CFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-32 of 304

42 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 95% 95% 94% 93% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 6000 Spot Market Imports and Exports % 98% 99% 99% 98% 99% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CFT_KN0_800 Page 6A-33 of 304

43 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,112 9,112 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,903) (4,903) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,063 7,184 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 918 2, ,611 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,754 1,100 3,422 BCH_VI WBBio_VI Firm Energy (GWh) 4,331 4,888 3,180 5,100 17, BCH_KN 100 MW SCGT KN BCH_EK ROR_T1R1_80-100_EK BCH_PR Site C ,100 5,100 5, BCH_KN 100 MW SCGT KN DSM Level in: BCH_KN 100 MW SCGT KN ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN BCH_PR Wind_PC BCH_KN 100 MW SCGT KN Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_KN 100 MW SCGT KN Average % 95% 95% BCH_KN ROR_T1R1_ _KN Lowest % 93% 94% BCH_VI Wind_VI BCH_VI Wind_VI BCH_VI MSW1_VI BCH_VI ROR_T1R1_ _VI ,319 1, Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC Shunt Compenstation NIC MDN KN to LM 570 Line 1150 BCH_KN WBBio_KM Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M2M_DFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-34 of 304

44 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 95% 95% 95% 95% 95% 94% 94% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 96% 96% 96% 96% 96% 96% 96% 95% 95% 95% 95% 95% 96% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DFT_KN0_800 Page 6A-35 of 304

45 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 6,076 6,076 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (771) (771) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,160 8,281 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,134 BCH_VI WBBio_VI Firm Energy (GWh) 1,493 1,885 1, ,733 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_KN 100 MW SCGT KN Dep. Capacity (MW) , ,377 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 6,560 2,605 3, , BCH_KN 100 MW SCGT KN BCH_PR Wind_PC BCH_KN 100 MW SCGT KN BCH_PR Wind_PC DSM Level in: BCH_NC WBBio_PG ,532 GWh 1,161 MW BCH_SE WBBio_WK ,230 GWh 1,578 MW BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_NC ROR_T1R1_70-100_NC Average % 98% 94% BCH_LM ROR_T1R1_90-100_LM Lowest % 97% 93% BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_PR Wind_PC Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_KN ROR_T1R1_80-100_KN Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Shunt Compenstation NIC MDN KN to LM 570 Line 1150 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M2M_EFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-36 of 304

46 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 95% 95% 94% 93% 94% 94% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_EFT_KN0_800 Page 6A-37 of 304

47 4 PORTFOLIO ANALYSIS Demand-Side Measures 4.1 Additional Results Figures 2 to 4 show additional results for the portfolio cost analysis as discussed in section All illustrated results reflect post-dsm Regulation amendment Net costs. Subsequent to the portfolio modelling, BC Hydro recognized that some historical DSM savings should be relocated back into the IRP DSM options 4. This amounts to approximately 700 GWh and 100 MW in F 5.This impacts all DSM options equally and has no impact on the relative comparison of different DSM options. While the DSM savings quoted and reflected in the Load Resource Balances in the IRP Chapters have been adjusted, the adjustment was not made in time for creating portfolios (in other words, savings before the historical DSM reallocation were modelled). This adjustment is not expected to influence any conclusions drawn based on portfolio comparisons. An exception is for the three portfolios used to evaluate near term energy acquisitions where the adjustment would affect volume of acquisitions. For these portfolios, the adjusted DSM savings were modelled as described in section 8.1. The sets of figures titled Savings Comparison (Figure 2 and Figure 3) present the PV results in relation to different levels of DSM savings to meet the same mid load forecast. For example, the figure labeled Low Saving shows the portfolio PV for meeting mid load forecast after low savings from DSM. The Expected PV figure 4 5 With the yearly release of a new load forecast before DSM the impacts of past DSM efforts, amongst other effects, are embedded in historical sales. Historical sales along with other drivers of the load are used to develop BC Hydro's load forecast. The Load Forecast before DSM excludes future DSM, that is, the forecast of incremental DSM savings in F2012 and beyond. To simplify this, BC Hydro says that the Load Forecast before DSM has a F2012 base year. Accordingly, the IRP DSM options that are subtracted off of the load forecast before DSM must have the same base year adjustment F2012. Initially, the IRP DSM options were derived using a F11 base year to align with the 2010 Load Forecast and were updated to a F12 base year to align with the updated load forecast. Since making the final adjustment to a F2012 base year for the DSM Options in the IRP analysis, BC Hydro has reallocated some of the historical DSM back into the IRP DSM options. This amounts to approximately 700 GWh and 100 MW in F. Numbers quoted are for the mid savings level and before adjustments for losses Page 6A-38 of 304

48 shows the probability weighted PV across the three DSM savings levels with 60% weighting for Mid Saving and 20% for each of the other two saving levels. Figure 2 summarizes the result from Market Scenario C whereas Figure 3 shows the result from Market Scenario B. Figure 2 Portfolio Costs across DSM Options (Savings Comparison, Market C Results) Net TRC (Post Amendment) Expected PV Low Saving Mid Saving High Saving Figure 3 Net TRC (Post Amendment) Portfolio Costs across DSM Options (Savings Comparison, Market B Results) Expected PV Low Saving Mid Saving High Saving The set of figures entitled Gaps Comparison (Figure 4) presents the PV results in relation to different gap sizes (see IRP Chapter 5 for a definition of small, mid and large gap). For example, the figure labeled Large Gap shows the portfolio PV for meeting high load forecast after low savings from DSM. The Expected PV figure shows the probability weighted PV across the three gap sizes with 80% weighting for Mid Gap and 10% for each of the other two gap sizes. Figure 4 shows the result from Market Scenario B whereas the result from Market Scenario C is already shown in IRP Chapter 6. Page 6A-39 of 304

49 Figure 4 Net TRC (Post Amendment) Portfolio Costs across DSM Options (Gaps Comparison 6, Market B Results) Expected PV Large Gap Mid Gap Small Gap Figure 5 to 7 show additional results for the incremental cost analysis as discussed in section All results shown reflect the DSM net cost post-amendment. 6 Gap size refers to both Load and DSM levels. As an example, a large gap means high load growth and low DSM savings. See section for more details on this topic Page 6A-40 of 304

50 Figure 5 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, post-dsm Regulation amendment, Gap Comparison, Market C Results) Net TRC (Post Amendment) Figure 6 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, postamendment, Gap Comparison, Market B Results) Net TRC (Post-Amendment) Page 6A-41 of 304

51 Figure 7 Incremental DSM Cost Compared to Avoided Supply Cost (Net TRC, postamendment, Savings Comparison, Market B Results) Net TRC (Post-Amendment) 4.2 Modelling Assumptions Figure 8 illustrates the modelling assumptions that underpinned the 50 portfolios discussed in section 6.3. Page 6A-42 of 304

52 Figure 8 Modelling Map DSM 4.3 Portfolio Output The portfolio output sheets of these portfolios are included on the following pages. Page 6A-43 of 304

53 Load Input Assumptions High 0 Load DSM DSM Option 1 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,825 14,825 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,225) (2,225) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 707 2,117 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,306 14,717 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,422 2,004 1, ,204 BCH_NC ROR_T1R1_70-100_NC BCH_NC 100 MW SCGT NC ,050 1, Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) , ,889 BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 6,150 3,692 2, ,961 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,359 1,100 5,485 BCH_PR Wind_PC Firm Energy (GWh) 9,246 6,238 2,986 5,100 23, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_LM ROR_T1R1_90-100_LM ,452 GWh 695 MW BCH_PR Wind_PC ,151 GWh 962 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_REV Revelstoke Unit Based on Generation Based on Firm Capability BCH_VI Wind_VI Average % 96% 95% BCH_LM ROR_T1R1_ _LM , Lowest % 95% 94% BCH_BQN ROR_T1R1_ _BQL BCH_PR Wind_PC BCH_SE WBBio_WK BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_NC WBBio_PG Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_KN WBBio_KM Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_EK WBBio_EK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_LM 1000 MW PS_LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line 1128 BCH_KN ROR_T1R1_ _KN L14 CI to KN CI to KN 2120 Line 1133 BCH_EK ROR_T1R1_80-100_EK Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_NC ROR_T1R1_ _NC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI Wind_VI H1L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-44 of 304

54 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H1L_BYT_KN0_100 Page 6A-45 of 304

55 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,354 14,354 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,211) (2,211) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,047 14,563 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,848 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,150 3,559 1, ,516 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,359 1,100 5,399 BCH_PR Wind_PC Firm Energy (GWh) 8,200 6,441 2,986 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_LM ROR_T1R1_ _LM , Average % 96% 95% BCH_PR Wind_PC Lowest % 95% 94% BCH_VI Wind_VI BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_SE WBBio_WK Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_NC WBBio_PG Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_KN ROR_T1R1_ _KN Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK ROR_T1R1_80-100_EK Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_BQN ROR_T1R1_ _BQL L8 PR to CI PR to CI 1470 Line 1128 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_KN WBBio_KM Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_SE ROR_T1R1_ _SE Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_EK WBBio_EK Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_LM ROR_T1R1_ _LM , Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H2L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-46 of 304

56 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_BYT_KN0_100 Page 6A-47 of 304

57 Load Input Assumptions High 0 Load DSM DSM Option 3 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,169 14,169 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,223) (2,223) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,228 2,748 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,174 14,694 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC 100 MW SCGT NC ,050 1, Firm Energy (GWh) 1,111 2,100 1, ,990 BCH_KN ROR_T1R1_70-80_KN BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,822 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 5,838 3,692 1, ,337 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,333 1,100 5,365 BCH_PR Wind_PC Firm Energy (GWh) 8,097 6,441 2,778 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_NC ROR_T1R1_70-100_NC ,089 GWh 773 MW BCH_LM ROR_T1R1_90-100_LM ,224 GWh 1,092 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_BQN ROR_T1R1_ _BQL Average % 96% 95% BCH_PR Wind_PC Lowest % 95% 94% BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_LM 1000 MW PS_LM , Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_KN ROR_T1R1_ _KN Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_SE WBBio_WK Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_EK ROR_T1R1_80-100_EK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line 1128 BCH_NC WBBio_PG L14 CI to KN CI to KN 2120 Line 1133 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_SE ROR_T1R1_ _SE Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_LM ROR_T1R1_ _LM , Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H3L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-48 of 304

58 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H3L_BYT_KN0_100 Page 6A-49 of 304

59 Load Input Assumptions High 0 Load DSM DSM Option 4 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,351 14,351 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,297) (2,297) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,547 3,095 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,600 15,148 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,390 1, ,280 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,842 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,047 3,876 1, ,730 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,359 1,100 5,339 BCH_PR Wind_PC Firm Energy (GWh) 7,525 6,238 2,986 5,100 21, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,756 GWh 735 MW BCH_PR Wind_PC ,649 GWh 1,249 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_EK ROR_T1R1_80-100_EK Based on Generation Based on Firm Capability BCH_REV Revelstoke Unit Average % 96% 95% BCH_LM ROR_T1R1_ _LM , Lowest % 95% 94% BCH_BQN ROR_T1R1_ _BQL BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Transmission Expansion BCH_NC WBBio_PG Year Project Description Between Capacity (MW) BCH_KN ROR_T1R1_ _KN Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_VI Wind_VI Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_EK WBBio_EK Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_LM ROR_T1R1_ _LM , Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 H4L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-50 of 304

60 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 96% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H4L_BYT_KN0_100 Page 6A-51 of 304

61 Load Input Assumptions High 0 Load DSM DSM Option 5 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,162 14,162 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,199) (2,199) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,679 3,267 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,642 15,230 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,390 1, ,280 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,930 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,278 2,605 2, ,661 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,359 1,100 5,349 BCH_PR Wind_PC Firm Energy (GWh) 8,392 5,206 2,986 5,100 21, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,850 GWh 780 MW BCH_PR Wind_PC ,777 GWh 1,359 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_VI Wind_VI Based on Generation Based on Firm Capability BCH_REV Revelstoke Unit Average % 96% 95% BCH_PR Wind_PC Lowest % 95% 94% BCH_SE WBBio_WK BCH_VI Wind_VI BCH_NC WBBio_PG BCH_EK WBBio_EK Transmission Expansion BCH_PR Site C ,100 5,100 5, Year Project Description Between Capacity (MW) BCH_LM 1000 MW PS_LM , Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_KN WBBio_KM Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_VI Wind_VI Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_VI Wind_VI Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_LM ROR_T1R1_ _LM , L8 PR to CI PR to CI 1470 Line 1128 BCH_EK ROR_T1R1_80-100_EK L14 CI to KN CI to KN 2120 Line 1133 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_BQN ROR_T1R1_ _BQL Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_REV ROR_T1R1_90-110_REV Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_NC ROR_T1R1_ _NC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_LM ROR_T1R1_ _LM , Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H5L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-52 of 304

62 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 96% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H5L_BYT_KN0_100 Page 6A-53 of 304

63 Load Input Assumptions Low 0 Load DSM DSM Option 1 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,882 2,882 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,986) (2,986) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 530 3,055 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 427 2,952 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_PR Site C ,100 5,100 5, Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,100 1,673 Firm Energy (GWh) 0 1, ,100 6, DSM Level in: 9,277 GWh 1,478 MW 12,284 GWh 1,964 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 L1H_BXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-54 of 304

64 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 96% 96% 97% 97% 96% 96% 96% 97% 97% 98% 98% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L1H_BXC_KN0_000 Page 6A-55 of 304

65 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,373 2,373 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,163) (3,163) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13 2,755 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,100 1,707 Firm Energy (GWh) 0 1, ,100 6, DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 L2H_BXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-56 of 304

66 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 97% 97% 97% 97% 97% 97% 96% 97% 97% 97% 97% 98% 98% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_BXC_KN0_000 Page 6A-57 of 304

67 Load Input Assumptions Low 0 Load DSM DSM Option 3 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,065 2,065 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,410) (3,410) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,295 4,133 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -49 2,789 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_REV Revelstoke Unit Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC WBBio_PG Firm Energy (GWh) BCH_SE WBBio_WK BCH_VI WBBio_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) 536 1,885 1, , DSM Level in: 10,984 GWh 1,710 MW 14,972 GWh 2,320 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L3H_BXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-58 of 304

68 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L3H_BXC_KN0_000 Page 6A-59 of 304

69 Load Input Assumptions Low 0 Load DSM DSM Option 4 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,694 1,694 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,371) (4,371) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,818 5,241 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions ,565 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) DSM Level in: 12,547 GWh 1,967 MW 19,067 GWh 3,156 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 98% 95% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 0 Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A 0 Cluster HCT to NC cct HCT to NC 541 #N/A L4H_BXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-60 of 304

70 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 97% 97% 97% 97% 98% 97% 98% 98% 98% 98% 98% 97% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L4H_BXC_KN0_000 Page 6A-61 of 304

71 Load Input Assumptions Low 0 Load DSM DSM Option 5 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,619 1,619 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (5,195) (5,195) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 2,024 5,797 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -1,552 2,221 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) DSM Level in: 13,965 GWh 2,253 MW 22,691 GWh 3,970 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 98% 95% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 0 Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A 0 Cluster HCT to NC cct HCT to NC 541 #N/A L5H_BXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-62 of 304

72 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 98% 97% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % 0 0% Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L5H_BXC_KN0_000 Page 6A-63 of 304

73 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 8,385 8,385 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,477) (2,477) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 626 2,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,534 8,453 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) BCH_NC ROR_T1R1_70-100_NC BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 2,355 2, ,499 BCH_PR Wind_PC BCH_VI WBBio_VI Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_REV Revelstoke Unit Dep. Capacity (MW) ,643 1,100 4,174 BCH_PR Wind_PC Firm Energy (GWh) 3,523 3,743 1,428 5,100 13, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , DSM Level in: BCH_PR Wind_PC ,656 GWh 1,050 MW BCH_NC WBBio_PG ,952 GWh 1,416 MW BCH_SE WBBio_WK BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_EK ROR_T1R1_80-100_EK Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 97% 96% BCH_LM ROR_T1R1_ _LM , Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M1M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-64 of 304

74 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 97% 97% 96% 97% 97% 97% 96% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M1M_BYC_KN0_000 Page 6A-65 of 304

75 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,553 7,553 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,509) (2,509) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,899 8,020 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,493 2,004 1, ,562 BCH_VI WBBio_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) ,661 1,100 4,116 BCH_SE WBBio_WK Firm Energy (GWh) 3,200 2,605 1,572 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_LM ROR_T1R1_90-100_LM BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-66 of 304

76 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 97% 96% 96% 97% 97% 97% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BYC_KN0_000 Page 6A-67 of 304

77 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,090 7,090 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,714) (2,714) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,265 3,486 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,641 7,862 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 536 2, ,896 BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,707 1,100 3,200 BCH_PR Site C ,100 5,100 5, Firm Energy (GWh) 3,632 2,605 1,934 5,100 13, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_SE WBBio_WK BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,229 GWh 1,255 MW BCH_PR Wind_PC ,350 GWh 1,723 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_KN WBBio_KM Clean Objective (%) - performance during the period - BCH_EK WBBio_EK Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M3M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-68 of 304

78 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 96% 96% 97% 97% 97% 98% 98% 97% 97% 98% 98% 97% 97% 97% 98% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M3M_BYC_KN0_000 Page 6A-69 of 304

79 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,650 6,650 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,844) (2,844) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,677 4,114 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,483 7,920 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 918 2, ,676 BCH_REV Revelstoke Unit BCH_PR Wind_PC Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total Avg. UEC BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) ,604 1,100 2,881 BCH_NC WBBio_PG Firm Energy (GWh) 1,021 2,004 1,116 5,100 9, BCH_VI Wind_VI BCH_LM 1000 MW PS_LM , DSM Level in: 8,455 GWh 1,305 MW 13,071 GWh 2,131 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M4M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-70 of 304

80 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 96% 96% 96% 97% 96% 98% 98% 97% 98% 98% 98% 98% 98% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M4M_BYC_KN0_000 Page 6A-71 of 304

81 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,538 6,538 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,813) (2,813) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,848 4,337 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,573 8,063 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 640 2, ,613 BCH_REV Revelstoke Unit BCH_VI Wind_VI Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,598 1,100 2,853 BCH_PR Site C ,100 5,100 5, Firm Energy (GWh) 640 2,219 1,066 5,100 9, BCH_SE WBBio_WK BCH_LM 1000 MW PS_LM , DSM Level in: 8,470 GWh 1,369 MW 13,347 GWh 2,341 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M5M_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-72 of 304

82 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 97% 96% 96% 96% 97% 96% 98% 98% 97% 97% 98% 98% 98% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M5M_BYC_KN0_000 Page 6A-73 of 304

83 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,014 6,014 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,683) (2,683) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 530 3,055 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 3,862 6,387 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 0 1, ,640 BCH_PR Site C ,100 5,100 5, BCH_KN WBBio_KM Supply Totals through BCH_LM 1000 MW PS_LM , Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,585 1,100 2,916 BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,493 2, ,100 10, BCH_KN ROR_T1R1_80-100_KN BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM DSM Level in: 9,277 GWh 1,478 MW 12,284 GWh 1,964 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M1H_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-74 of 304

84 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports 110% % 97% 97% 96% 96% 96% 96% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M1H_BYC_KN0_000 Page 6A-75 of 304

85 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 5,327 5,327 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,848) (2,848) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 3,283 6,025 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_LM ROR_T1R1_60-80_LM Firm Energy (GWh) BCH_REV Revelstoke Unit BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 0 1, ,786 BCH_VI ROR_T1R1_90-110_VI BCH_LM 1000 MW PS_LM , Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,559 1,100 2,813 Firm Energy (GWh) 536 2, ,100 8, DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M2H_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-76 of 304

86 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports 110% % 98% 97% 96% 96% 96% 97% 98% 98% 97% 97% 97% 98% 97% 97% 97% 97% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M2H_BYC_KN0_000 Page 6A-77 of 304

87 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,756 4,756 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,904) (2,904) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,295 4,133 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 3,147 5,985 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_REV Revelstoke Unit Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_PR Site C ,100 5,100 5, Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM 1000 MW PS_LM , Firm Energy (GWh) ,001 BCH_LM ROR_T1R1_80-90_LM Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,503 1,100 2,703 Firm Energy (GWh) 0 1, ,100 7, DSM Level in: 10,984 GWh 1,710 MW 14,972 GWh 2,320 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M3H_BYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-78 of 304

88 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 97% 97% 96% 96% 96% 98% 98% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M3H_BYC_KN0_000 Page 6A-79 of 304

89 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 3,039 3,039 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,952) (2,952) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,818 5,241 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 1,905 5,328 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_VI WBBio_VI Supply Totals through BCH_PR Site C ,100 5,100 5, Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,100 1,690 Firm Energy (GWh) ,100 6, DSM Level in: 12,547 GWh 1,967 MW 19,067 GWh 3,156 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M4H_BFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-80 of 304

90 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 96% 96% 96% 97% 96% 97% 97% 97% 97% 98% 98% 98% 98% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M4H_BFC_KN0_000 Page 6A-81 of 304

91 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,007 2,007 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,023) (3,023) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 2,024 5,797 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 1,008 4,781 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) DSM Level in: 13,965 GWh 2,253 MW 22,691 GWh 3,970 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 95% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M5H_BFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-82 of 304

92 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 97% 97% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M5H_BFC_KN0_000 Page 6A-83 of 304

93 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 10,652 10,652 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,347) (2,347) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 707 2,117 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,012 10,422 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC 100 MW SCGT NC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,209 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,308 BCH_PR Wind_PC Firm Energy (GWh) 3,741 2,390 1, ,946 BCH_NC ROR_T1R1_70-100_NC BCH_VI Wind_VI Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) ,915 1,100 4,656 BCH_LM ROR_T1R1_90-100_LM Firm Energy (GWh) 6,150 3,856 1,815 5,100 16, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_REV Revelstoke Unit ,452 GWh 695 MW BCH_PR Wind_PC ,151 GWh 962 MW BCH_SE WBBio_WK BCH_EK WBBio_EK BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 97% 96% BCH_PR Wind_PC Lowest % 96% 94% BCH_LM 1000 MW PS_LM , BCH_KN ROR_T1R1_80-100_KN BCH_EK ROR_T1R1_80-100_EK BCH_LM ROR_T1R1_ _LM , Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_KN ROR_T1R1_ _KN Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M1L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-84 of 304

94 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 97% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M1L_BYT_KN0_100 Page 6A-85 of 304

95 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 10,257 10,257 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,425) (2,425) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 8,735 10,251 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) 0 1, ,979 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,230 BCH_PR Wind_PC Firm Energy (GWh) 3,637 2,605 1, ,447 BCH_VI WBBio_VI BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,986 1,100 4,629 BCH_PR Wind_PC Firm Energy (GWh) 4,879 3,856 2,385 5,100 16, BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_KN ROR_T1R1_80-100_KN ,835 GWh 1,045 MW BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_SE WBBio_WK BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_NC WBBio_PG Average % 97% 95% BCH_KN WBBio_KM Lowest % 95% 94% BCH_EK WBBio_EK BCH_VI Wind_VI BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC Transmission Expansion BCH_KN ROR_T1R1_ _KN Year Project Description Between Capacity (MW) BCH_EK ROR_T1R1_80-100_EK Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_LM ROR_T1R1_ _LM , Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-86 of 304

96 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 95% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 96% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2L_BYT_KN0_100 Page 6A-87 of 304

97 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 10,125 10,125 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,469) (2,469) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,228 2,748 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 8,883 10,404 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC 100 MW SCGT NC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,209 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,217 BCH_PR Wind_PC Firm Energy (GWh) 3,523 2,605 1, ,333 BCH_VI WBBio_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,923 1,100 4,557 BCH_PR Wind_PC Firm Energy (GWh) 4,752 3,989 1,879 5,100 15, BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_REV Revelstoke Unit BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,089 GWh 773 MW BCH_PR Wind_PC ,224 GWh 1,092 MW BCH_NC ROR_T1R1_70-100_NC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_NC WBBio_PG Based on Generation Based on Firm Capability BCH_KN ROR_T1R1_ _KN Average % 97% 95% BCH_SE WBBio_WK Lowest % 96% 94% BCH_EK ROR_T1R1_80-100_EK BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , Transmission Expansion BCH_BQN ROR_T1R1_ _BQL Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M3L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-88 of 304

98 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M3L_BYT_KN0_100 Page 6A-89 of 304

99 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 10,277 10,277 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,480) (2,480) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,547 3,095 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,344 10,892 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) 0 1, ,391 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,243 BCH_PR Wind_PC Firm Energy (GWh) 3,851 2,605 1, ,661 BCH_PR Wind_PC BCH_PR Wind_PC Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) ,960 1,100 4,563 BCH_LM ROR_T1R1_90-100_LM Firm Energy (GWh) 4,983 3,034 2,177 5,100 15, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit DSM Level in: BCH_PR Wind_PC ,756 GWh 735 MW BCH_PR Wind_PC ,649 GWh 1,249 MW BCH_KN ROR_T1R1_80-100_KN BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_NC WBBio_PG Average % 97% 95% BCH_SE WBBio_WK Lowest % 95% 95% BCH_EK WBBio_EK BCH_VI Wind_VI BCH_VI Wind_VI BCH_KN ROR_T1R1_ _KN Transmission Expansion BCH_EK ROR_T1R1_80-100_EK Year Project Description Between Capacity (MW) BCH_LM 1000 MW PS_LM , Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_BQN ROR_T1R1_ _BQL Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M4L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-90 of 304

100 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 95% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M4L_BYT_KN0_100 Page 6A-91 of 304

101 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 10,177 10,177 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,476) (2,476) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,679 3,267 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,381 10,968 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) 0 1, ,391 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,218 BCH_PR Wind_PC Firm Energy (GWh) 3,523 2,788 1, ,517 BCH_PR Wind_PC BCH_PR Wind_PC Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) ,986 1,100 3,693 BCH_LM ROR_T1R1_90-100_LM Firm Energy (GWh) 5,708 3,743 2,385 5,100 16, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit DSM Level in: BCH_PR Wind_PC ,850 GWh 780 MW BCH_PR Wind_PC ,777 GWh 1,359 MW BCH_KN ROR_T1R1_80-100_KN BCH_EK ROR_T1R1_80-100_EK BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_SE WBBio_WK Average % 97% 95% BCH_PR Wind_PC Lowest % 96% 95% BCH_PR Wind_PC BCH_NC WBBio_PG BCH_KN WBBio_KM BCH_EK WBBio_EK Transmission Expansion BCH_VI Wind_VI Year Project Description Between Capacity (MW) BCH_VI Wind_VI Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_VI Wind_VI Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_LM ROR_T1R1_ _LM , Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M5L_BYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-92 of 304

102 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 97% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M5L_BYT_KN0_100 Page 6A-93 of 304

103 Load Input Assumptions High 0 Load DSM DSM Option 1 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,684 13,684 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (788) (788) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 707 2,117 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,603 15,013 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,493 1,885 1, ,156 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,964 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,818 2,390 2, ,986 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,359 1,100 5,507 BCH_PR Wind_PC Firm Energy (GWh) 10,213 5,021 2,986 5,100 23, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC DSM Level in: BCH_LM ROR_T1R1_90-100_LM ,452 GWh 695 MW BCH_PR Wind_PC ,151 GWh 962 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_REV Revelstoke Unit Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_PR Wind_PC Lowest % 96% 94% BCH_NC WBBio_PG BCH_VI Wind_VI BCH_SE WBBio_WK BCH_EK WBBio_EK Transmission Expansion BCH_VI Wind_VI Year Project Description Between Capacity (MW) BCH_PR Site C ,100 5,100 5, Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_LM 1000 MW PS_LM , Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_KN WBBio_KM Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_VI Wind_VI Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_KN ROR_T1R1_80-100_KN L8 PR to CI PR to CI 1470 Line 1128 BCH_LM 1000 MW PS_LM , L14 CI to KN CI to KN 2120 Line 1133 BCH_VI Wind_VI Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_BQN ROR_T1R1_ _BQL Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_KN ROR_T1R1_ _KN Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_EK ROR_T1R1_80-100_EK Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_PR Wind_PC Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI Wind_VI H1L_CYT_KN0_100 BCH_VI ROR_T1R1_ _VI ,319 1, Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-94 of 304

104 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 96% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H1L_CYT_KN0_100 Page 6A-95 of 304

105 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,263 13,263 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (810) (810) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,356 14,872 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,916 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,687 2,390 2, ,557 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,371 1,100 5,448 BCH_PR Wind_PC Firm Energy (GWh) 9,381 5,021 3,088 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_VI Wind_VI Lowest % 97% 94% BCH_NC WBBio_PG BCH_SE WBBio_WK BCH_VI Wind_VI BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_KN ROR_T1R1_80-100_KN Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line 1128 BCH_EK WBBio_EK L14 CI to KN CI to KN 2120 Line 1133 BCH_BQN ROR_T1R1_ _BQL Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI MSW1_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H2L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-96 of 304

106 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 97% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_CYT_KN0_100 Page 6A-97 of 304

107 Load Input Assumptions High 0 Load DSM DSM Option 3 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,084 13,084 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (808) (808) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,228 2,748 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,504 15,024 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,422 1,885 1, ,086 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,877 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,691 2,605 2, ,414 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,359 1,100 5,463 BCH_PR Wind_PC Firm Energy (GWh) 10,394 3,743 2,986 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC BCH_LM ROR_T1R1_90-100_LM DSM Level in: BCH_PR Wind_PC ,089 GWh 773 MW BCH_PR Wind_PC ,224 GWh 1,092 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_VI Wind_VI Lowest % 97% 94% BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_SE WBBio_WK BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_LM 1000 MW PS_LM , Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_NC WBBio_PG Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_VI Wind_VI L8 PR to CI PR to CI 1470 Line 1128 BCH_LM ROR_T1R1_ _LM , L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_KN WBBio_KM Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_NC Wind_NC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_KN Wind_SI Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H3L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-98 of 304

108 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H3L_CYT_KN0_100 Page 6A-99 of 304

109 Load Input Assumptions High 0 Load DSM DSM Option 4 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,205 13,205 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (778) (778) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,547 3,095 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,974 15,522 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,576 2,004 1, ,359 BCH_NC ROR_T1R1_70-100_NC BCH_NC 100 MW SCGT NC ,050 1, Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) , ,911 BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 6,560 2,605 2, ,645 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,359 1,100 5,393 BCH_PR Wind_PC Firm Energy (GWh) 9,666 3,989 2,986 5,100 21, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,756 GWh 735 MW BCH_PR Wind_PC ,649 GWh 1,249 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_VI Wind_VI Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_90-100_LM Based on Generation Based on Firm Capability BCH_REV Revelstoke Unit Average % 98% 95% BCH_PR Wind_PC Lowest % 96% 94% BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_SE WBBio_WK BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_VI Wind_VI Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_LM 1000 MW PS_LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line 1128 BCH_KN WBBio_KM L14 CI to KN CI to KN 2120 Line 1133 BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_BQN ROR_T1R1_ _BQL Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_KN Wind_SI Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_EK ROR_T1R1_80-100_EK Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H4L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-100 of 304

110 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 98% 98% 96% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H4L_CYT_KN0_100 Page 6A-101 of 304

111 Load Input Assumptions High 0 Load DSM DSM Option 5 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,015 13,015 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (762) (762) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,679 3,267 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,932 15,519 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,576 2,004 1, ,359 BCH_NC ROR_T1R1_70-100_NC BCH_NC 100 MW SCGT NC ,050 1, Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) , ,938 BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 6,150 2,390 2, ,526 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,371 1,100 5,390 BCH_PR Wind_PC Firm Energy (GWh) 9,480 3,989 3,088 5,100 21, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,850 GWh 780 MW BCH_PR Wind_PC ,777 GWh 1,359 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_SE WBBio_WK BCH_LM ROR_T1R1_90-100_LM Clean Objective (%) - performance during the period - BCH_REV Revelstoke Unit Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_NC WBBio_PG Lowest % 96% 94% BCH_VI Wind_VI BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_KN Wind_SI Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_VI Wind_VI Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_VI Wind_VI Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_VI Wind_VI Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_VI MSW1_VI L8 PR to CI PR to CI 1470 Line 1128 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_KN ROR_T1R1_80-100_KN Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_KN ROR_T1R1_ _KN Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_BQN ROR_T1R1_ _BQL Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H5L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-102 of 304

112 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 96% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H5L_CYT_KN0_100 Page 6A-103 of 304

113 Load Input Assumptions Low 0 Load DSM DSM Option 1 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,461 1,461 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,107) (1,107) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 530 3,055 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 885 3,410 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_VI WBBio_VI BCH_LM 1000 MW PS_LM , Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_PR Wind_PC Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) , ,727 Firm Energy (GWh) 918 2, , DSM Level in: 9,277 GWh 1,478 MW 12,284 GWh 1,964 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L1H_CXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-104 of 304

114 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L1H_CXC_KN0_000 Page 6A-105 of 304

115 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,129 1,129 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,325) (1,325) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 607 3,350 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI Wind_VI Dep. Capacity (MW) BCH_LM 1000 MW PS_LM , Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,588 Firm Energy (GWh) 234 1, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_CXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-106 of 304

116 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_CXC_KN0_000 Page 6A-107 of 304

117 Load Input Assumptions Low 0 Load DSM DSM Option 3 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,555) (1,555) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,295 4,133 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 736 3,574 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM 1000 MW PS_LM , Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) 0 0 1, ,559 Firm Energy (GWh) DSM Level in: 10,984 GWh 1,710 MW 14,972 GWh 2,320 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L3H_CXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-108 of 304

118 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L3H_CXC_KN0_000 Page 6A-109 of 304

119 Load Input Assumptions Low 0 Load DSM DSM Option 4 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,329) (2,329) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,818 5,241 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 472 3,895 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) #DIV/0! DSM Level in: 12,547 GWh 1,967 MW 19,067 GWh 3,156 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 0 Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A 0 Cluster HCT to NC cct HCT to NC 541 #N/A L4H_CXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-110 of 304

120 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L4H_CXC_KN0_000 Page 6A-111 of 304

121 Load Input Assumptions Low 0 Load DSM DSM Option 5 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,758) (2,758) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 2,024 5,797 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 233 4,006 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) #DIV/0! DSM Level in: 13,965 GWh 2,253 MW 22,691 GWh 3,970 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 0 Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A 0 Cluster HCT to NC cct HCT to NC 541 #N/A L5H_CXC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-112 of 304

122 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L5H_CXC_KN0_000 Page 6A-113 of 304

123 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,379 7,379 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (930) (930) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 626 2,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 7,075 8,995 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 2,736 2, ,495 BCH_PR Wind_PC BCH_PR Wind_PC Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_REV Revelstoke Unit Dep. Capacity (MW) ,661 1,100 4,230 BCH_PR Wind_PC Firm Energy (GWh) 4,752 2,390 1,572 5,100 13, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , DSM Level in: BCH_KN WBBio_KM ,656 GWh 1,050 MW BCH_SE WBBio_WK ,952 GWh 1,416 MW BCH_EK WBBio_EK BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M1M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-114 of 304

124 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 99% 100% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M1M_CYC_KN0_000 Page 6A-115 of 304

125 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,578 6,578 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (975) (975) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,458 8,579 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 1,596 1,885 1, ,547 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) ,707 1,100 4,146 BCH_SE WBBio_WK Firm Energy (GWh) 3,303 2,004 1,934 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_NC WBBio_PG ,230 GWh 1,578 MW BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-116 of 304

126 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CYC_KN0_000 Page 6A-117 of 304

127 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,006 6,006 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (996) (996) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,265 3,486 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,275 8,496 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 1,111 1, ,751 BCH_REV Revelstoke Unit BCH_PR Wind_PC Supply Totals through BCH_PR Site C ,100 5,100 5, Wind Run of River Other Site C Total Avg. UEC BCH_LM 1000 MW PS_LM , Dep. Capacity (MW) ,559 1,100 3,980 BCH_PR Wind_PC Firm Energy (GWh) 2,840 2, ,100 11, BCH_PR Wind_PC BCH_VI Wind_VI BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_NC ROR_T1R1_70-100_NC ,229 GWh 1,255 MW BCH_LM ROR_T1R1_90-100_LM ,350 GWh 1,723 MW BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M3M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-118 of 304

128 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 96% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M3M_CYC_KN0_000 Page 6A-119 of 304

129 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 5,626 5,626 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,096) (1,096) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,677 4,114 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,207 8,643 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI WBBio_VI Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 918 1, ,558 BCH_REV Revelstoke Unit BCH_PR Wind_PC Supply Totals through BCH_PR Site C ,100 5,100 5, Wind Run of River Other Site C Total Avg. UEC BCH_LM 1000 MW PS_LM , Dep. Capacity (MW) ,559 1,100 2,861 BCH_PR Wind_PC Firm Energy (GWh) 1,493 1, ,100 9, DSM Level in: 8,455 GWh 1,305 MW 13,071 GWh 2,131 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M4M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-120 of 304

130 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M4M_CYC_KN0_000 Page 6A-121 of 304

131 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 5,531 5,531 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,093) (1,093) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,848 4,337 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,286 8,775 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_LM MSW2_LM Firm Energy (GWh) BCH_LM ROR_T1R1_60-80_LM BCH_LM ROR_T1R1_80-90_LM Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 847 1, ,487 BCH_REV Revelstoke Unit BCH_PR Wind_PC Supply Totals through BCH_PR Site C ,100 5,100 5, Wind Run of River Other Site C Total Avg. UEC BCH_KN WBBio_KM Dep. Capacity (MW) ,585 1,100 2,849 BCH_LM 1000 MW PS_LM , Firm Energy (GWh) 847 2, ,100 8, BCH_NC ROR_T1R1_70-100_NC DSM Level in: 8,470 GWh 1,369 MW 13,347 GWh 2,341 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M5M_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-122 of 304

132 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M5M_CYC_KN0_000 Page 6A-123 of 304

133 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,975 4,975 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,043) (1,043) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 530 3,055 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 4,463 6,988 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 847 1, ,603 BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) ,559 1,100 2,922 BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 2,268 2, ,100 10, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: 9,277 GWh 1,478 MW 12,284 GWh 1,964 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M1H_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-124 of 304

134 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports 110% % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M1H_CYC_KN0_000 Page 6A-125 of 304

135 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,236 4,236 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,108) (1,108) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 3,931 6,673 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) BCH_REV Revelstoke Unit BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) BCH_LM 1000 MW PS_LM , Firm Energy (GWh) 0 1, ,556 BCH_PR Wind_PC BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,559 1,100 2,805 BCH_VI WBBio_VI Firm Energy (GWh) 1,112 1, ,100 8, DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M2H_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-126 of 304

136 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 96% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2H_CYC_KN0_000 Page 6A-127 of 304

137 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 3,738 3,738 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,197) (1,197) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,295 4,133 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 3,837 6,675 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_REV Revelstoke Unit Firm Energy (GWh) BCH_LM MSW2_LM BCH_PR Site C ,100 5,100 5, Supply Totals through BCH_LM 1000 MW PS_LM , Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI Wind_VI BCH_LM ROR_T1R1_80-90_LM Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,503 1,100 2,678 Firm Energy (GWh) 103 1, ,100 7, DSM Level in: 10,984 GWh 1,710 MW 14,972 GWh 2,320 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M3H_CYC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-128 of 304

138 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 98% 99% 99% 99% 98% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M3H_CYC_KN0_000 Page 6A-129 of 304

139 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,513 1,513 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (972) (972) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,818 5,241 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 2,359 5,782 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_EK WBBio_EK Firm Energy (GWh) BCH_VI WBBio_VI BCH_LM 1000 MW PS_LM , Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM ROR_T1R1_80-90_LM Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,658 Firm Energy (GWh) 0 1,473 1, , DSM Level in: 12,547 GWh 1,967 MW 19,067 GWh 3,156 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M4H_CFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-130 of 304

140 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports 110% % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 99% 100% % % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M4H_CFC_KN0_000 Page 6A-131 of 304

141 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,266 1,266 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,579) (1,579) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 2,024 5,797 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 1,712 5,485 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) Firm Energy (GWh) DSM Level in: 13,965 GWh 2,253 MW 22,691 GWh 3,970 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M5H_CFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-132 of 304

142 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M5H_CFC_KN0_000 Page 6A-133 of 304

143 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 1 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,616 9,616 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (894) (894) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 707 2,117 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,428 10,839 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC 100 MW SCGT NC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,209 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,317 BCH_PR Wind_PC Firm Energy (GWh) 4,101 2,004 1, ,919 BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) ,986 1,100 4,736 BCH_PR Wind_PC Firm Energy (GWh) 7,063 2,390 2,385 5,100 16, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit DSM Level in: BCH_PR Wind_PC ,452 GWh 695 MW BCH_SE WBBio_WK ,151 GWh 962 MW BCH_EK WBBio_EK BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_NC WBBio_PG Clean Objective (%) - performance during the period - BCH_KN WBBio_KM Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 96% BCH_LM 1000 MW PS_LM , Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI Transmission Expansion BCH_LM ROR_T1R1_90-100_LM Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M1L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-134 of 304

144 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 98% 97% 98% 97% 97% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M1L_CYT_KN0_100 Page 6A-135 of 304

145 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,158 9,158 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (878) (878) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,183 10,699 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_NC ROR_T1R1_70-100_NC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) 0 1, ,979 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,248 BCH_PR Wind_PC Firm Energy (GWh) 4,216 2,004 1, ,425 BCH_PR Wind_PC BCH_VI WBBio_VI Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) ,877 1,100 4,623 BCH_PR Wind_PC Firm Energy (GWh) 6,932 2,605 1,517 5,100 16, BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_VI Wind_VI ,835 GWh 1,045 MW BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 95% BCH_PR Wind_PC Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_KN ROR_T1R1_80-100_KN Year Project Description Between Capacity (MW) BCH_SE WBBio_WK Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M2L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-136 of 304

146 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 98% 98% 98% 98% 97% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2L_CYT_KN0_100 Page 6A-137 of 304

147 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 3 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,023 9,023 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (894) (894) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,228 2,748 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,357 10,877 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 382 1, ,143 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,218 BCH_PR Wind_PC Firm Energy (GWh) 3,626 2,390 1, ,221 BCH_KN ROR_T1R1_70-80_KN BCH_VI WBBio_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,838 1,100 4,588 BCH_PR Wind_PC Firm Energy (GWh) 7,063 2,390 1,206 5,100 15, BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC BCH_REV Revelstoke Unit BCH_PR Wind_PC DSM Level in: BCH_VI Wind_VI ,089 GWh 773 MW BCH_LM ROR_T1R1_90-100_LM ,224 GWh 1,092 MW BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 95% BCH_PR Wind_PC Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M3L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-138 of 304

148 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 98% 98% 98% 98% 98% 97% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M3L_CYT_KN0_100 Page 6A-139 of 304

149 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 4 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,228 9,228 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (930) (930) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,547 3,095 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,845 11,393 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_NC 100 MW SCGT NC Firm Energy (GWh) 536 1, ,428 BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) ,264 BCH_PR Wind_PC Firm Energy (GWh) 4,423 2,004 1, ,633 BCH_PR Wind_PC BCH_PR Wind_PC Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) ,986 1,100 4,600 BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 5,337 2,390 2,385 5,100 15, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV Revelstoke Unit DSM Level in: BCH_PR Wind_PC ,756 GWh 735 MW BCH_PR Wind_PC ,649 GWh 1,249 MW BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_NC WBBio_PG Clean Objective (%) - performance during the period - BCH_KN WBBio_KM Based on Generation Based on Firm Capability BCH_SE WBBio_WK Average % 99% 95% BCH_EK WBBio_EK Lowest % 97% 95% BCH_VI Wind_VI BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM BCH_LM 1000 MW PS_LM , Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M4L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-140 of 304

150 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 98% 98% 98% 98% 98% 97% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh Other - MSW etc. Load after DSM savings Clean percentage based on generation M4L_CYT_KN0_100 Page 6A-141 of 304

151 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 5 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,091 9,091 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (895) (895) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 1,679 3,267 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 9,875 11,463 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC 100 MW SCGT NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) 536 1, ,397 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,236 BCH_PR Wind_PC Firm Energy (GWh) 3,851 2,390 1, ,446 BCH_PR Wind_PC BCH_VI WBBio_VI Supply Totals through BCH_VI ROR_T1R1_80-90_VI Wind Run of River Other Site C Total Avg. UEC BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) ,838 1,100 4,539 BCH_PR Wind_PC Firm Energy (GWh) 6,457 2,390 1,206 5,100 15, BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC BCH_REV Revelstoke Unit DSM Level in: BCH_PR Wind_PC ,850 GWh 780 MW BCH_LM ROR_T1R1_90-100_LM ,777 GWh 1,359 MW BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 95% BCH_PR Wind_PC Lowest % 97% 95% BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M5L_CYT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-142 of 304

152 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 98% 98% 98% 98% 97% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M5L_CYT_KN0_100 Page 6A-143 of 304

153 5 PORTFOLIO ANALYSIS Site C 5.1 Modelling Assumptions Figure 9 illustrates the modelling assumptions that underpinned the 30 portfolios discussed in section In addition to the 30 portfolios, another set of 5 portfolios was created for a sensitivity analysis on capacity options, as discussed in section These portfolios were created to meet the mid gap, with natural gas-fired generation modelled as capacity resource options but limited by the clean objective, and with Site C as a resource option. These portfolios were created across the five different market scenarios. The portfolios using Market Scenarios C and E were created for the 30-year planning period to determine longer term impacts of these resource decisions. Figure 9 Modelling Map Site C Page 6A-144 of 304

154 5.2 Portfolio Output The portfolio output sheets of these portfolios are included on the following pages. Page 6A-145 of 304

155 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 15,250 15,250 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,893) (2,893) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,260 14,776 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 536 2,788 1, ,104 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_KN ROR_T1R1_80-100_KN Wind Run of River Other Site C Total BCH_EK ROR_T1R1_80-100_EK Dep. Capacity (MW) , ,831 BCH_VI WBBio_VI Firm Energy (GWh) 5,852 3,989 1, ,648 BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) ,359 1,100 5,398 BCH_LM ROR_T1R1_90-100_LM Firm Energy (GWh) 7,819 6,837 2,986 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_LM ROR_T1R1_ _LM , ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_BQN ROR_T1R1_ _BQL BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_PR Wind_PC Lowest % 97% 94% BCH_PR Wind_PC BCH_KN ROR_T1R1_ _KN BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_SE WBBio_WK Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_VI Wind_VI Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_PR Wind_PC Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_NC WBBio_PG Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_KN WBBio_KM Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_NC ROR_T1R1_ _NC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_REV ROR_T1R1_90-110_REV Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_SE ROR_T1R1_ _SE Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI ROR_T1R1_ _VI Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_MCAROR_T1R1_ _MCA Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 H2L_AFT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-146 of 304

156 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 97% 97% 97% 97% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% % % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_AFT_KN0_100 Page 6A-147 of 304

157 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,340 14,340 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,218) (2,218) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,025 14,541 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,848 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,150 3,559 1, ,516 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,333 1,100 5,384 BCH_PR Wind_PC Firm Energy (GWh) 8,405 6,441 2,778 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_LM ROR_T1R1_ _LM , Average % 96% 95% BCH_PR Wind_PC Lowest % 95% 94% BCH_VI Wind_VI BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_SE WBBio_WK Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_KN ROR_T1R1_ _KN Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK ROR_T1R1_80-100_EK Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_BQN ROR_T1R1_ _BQL L8 PR to CI PR to CI 1470 Line 1128 BCH_VI ROR_T1R1_ _VI ,319 1, L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_NC WBBio_PG Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_SE ROR_T1R1_ _SE Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_EK WBBio_EK Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line 1145 H2L_BFT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-148 of 304

158 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 95% 95% 95% 96% 96% 97% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_BFT_KN0_100 Page 6A-149 of 304

159 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,232 13,232 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (801) (801) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,335 14,851 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,900 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,493 2,605 2, ,514 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,371 1,100 5,498 BCH_PR Wind_PC Firm Energy (GWh) 10,493 3,989 3,088 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_VI Wind_VI Lowest % 96% 94% BCH_SE WBBio_WK BCH_EK WBBio_EK BCH_VI Wind_VI BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_LM ROR_T1R1_ _LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_BQN ROR_T1R1_ _BQL L8 PR to CI PR to CI 1470 Line 1128 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_NC WBBio_PG Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_KN Wind_SI Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_NC Wind_NC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI Wind_VI H2L_CFT_KN0_100 BCH_VI MSW1_VI Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-150 of 304

160 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 97% 96% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_CFT_KN0_100 Page 6A-151 of 304

161 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 15,863 15,863 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,087) (4,087) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 12,680 14,196 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_NC 100 MW SCGT NC ,050 1, Firm Energy (GWh) 536 2,605 1, ,920 BCH_KN ROR_T1R1_70-80_KN BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,813 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 5,531 4,290 1, ,629 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,359 1,100 5,398 BCH_PR Wind_PC Firm Energy (GWh) 7,819 6,837 2,986 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_NC ROR_T1R1_ _NC BCH_EK ROR_T1R1_80-100_EK BCH_BQN ROR_T1R1_ _BQL BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 95% 95% BCH_PR Wind_PC Lowest % 93% 94% BCH_PR Wind_PC BCH_KN ROR_T1R1_ _KN BCH_PR Wind_PC BCH_VI Wind_VI Transmission Expansion BCH_REV ROR_T1R1_90-110_REV Year Project Description Between Capacity (MW) BCH_PR Site C ,100 5,100 5, Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_LM 1000 MW PS_LM , Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_SE ROR_T1R1_ _SE Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_MCAROR_T1R1_ _MCA Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_NC WBBio_PG Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_KN WBBio_KM Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_VI ROR_T1R1_ _VI Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 H2L_DFT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-152 of 304

162 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 93% 93% 94% 94% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_DFT_KN0_100 Page 6A-153 of 304

163 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,247 13,247 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (844) (844) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,306 14,822 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,916 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,687 2,390 2, ,557 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,371 1,100 5,510 BCH_PR Wind_PC Firm Energy (GWh) 10,692 3,805 3,088 5,100 22, BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_LM ROR_T1R1_90-100_LM Clean Objective (%) - performance during the period - BCH_REV Revelstoke Unit Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_PR Wind_PC Lowest % 97% 94% BCH_VI Wind_VI BCH_NC WBBio_PG BCH_SE WBBio_WK BCH_PR Site C ,100 5,100 5, Transmission Expansion BCH_LM 1000 MW PS_LM , Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_KN ROR_T1R1_80-100_KN Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line 1128 BCH_EK WBBio_EK L14 CI to KN CI to KN 2120 Line 1133 BCH_BQN ROR_T1R1_ _BQL Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_KN Wind_SI Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_NC Wind_NC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI MSW1_VI H2L_EFT_KN0_100 Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-154 of 304

164 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_EFT_KN0_100 Page 6A-155 of 304

165 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,442 4,442 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (6,403) (6,403) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -1,157 1,585 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_REV Revelstoke Unit BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_PR Site C ,100 5,100 5, Firm Energy (GWh) 0 1, ,786 BCH_VI ROR_T1R1_90-110_VI BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,100 1,820 BCH_EK ROR_T1R1_80-100_EK Firm Energy (GWh) 536 3, ,100 9, BCH_LM ROR_T1R1_ _LM , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 L2H_AFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-156 of 304

166 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 100% 99% 99% 99% 100% 100% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_AFC_KN0_000 Page 6A-157 of 304

167 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,454 2,454 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,154) (3,154) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 103 2,846 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Site C ,100 5,100 5, Dep. Capacity (MW) Firm Energy (GWh) Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) ,100 1,707 Firm Energy (GWh) 0 1, ,100 6, DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 L2H_BFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-158 of 304

168 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 97% 97% 97% 97% 97% 97% 96% 97% 97% 97% 97% 98% 98% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_BFC_KN0_000 Page 6A-159 of 304

169 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,205 1,205 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,325) (1,325) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 684 3,426 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI Wind_VI Dep. Capacity (MW) BCH_LM 500 MW PS_LM Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,088 Firm Energy (GWh) 234 1, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_CFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-160 of 304

170 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_CFC_KN0_000 Page 6A-161 of 304

171 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,848 4,848 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (6,726) (6,726) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -1,074 1,669 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_REV Revelstoke Unit Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_PR Site C ,100 5,100 5, Firm Energy (GWh) 0 1, ,350 BCH_VI ROR_T1R1_90-110_VI BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_EK ROR_T1R1_80-100_EK Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) ,100 1,783 BCH_LM ROR_T1R1_ _LM , Firm Energy (GWh) 0 3, ,100 9, DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 96% 96% Lowest % 94% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 L2H_DFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-162 of 304

172 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 94% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_DFC_KN0_000 Page 6A-163 of 304

173 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,249 1,249 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,339) (1,339) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 713 3,455 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI Wind_VI Dep. Capacity (MW) BCH_LM 500 MW PS_LM Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_LM ROR_T1R1_80-90_LM Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,093 Firm Energy (GWh) 640 1, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_EFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-164 of 304

174 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_EFC_KN0_000 Page 6A-165 of 304

175 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 8,296 8,296 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,821) (3,821) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,330 7,451 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_NC ROR_T1R1_70-100_NC Supply Totals through BCH_KN ROR_T1R1_80-100_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 918 3, ,707 BCH_PR Wind_PC BCH_EK ROR_T1R1_80-100_EK Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_REV Revelstoke Unit Dep. Capacity (MW) ,680 1,100 3,400 BCH_KN ROR_T1R1_ _KN Firm Energy (GWh) 5,009 5,021 1,726 5,100 16, BCH_VI WBBio_VI BCH_BQN ROR_T1R1_ _BQL BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_VI Wind_VI ,230 GWh 1,578 MW BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_LM ROR_T1R1_ _LM , Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_SE WBBio_WK Transmission Expansion BCH_EK WBBio_EK Year Project Description Between Capacity (MW) BCH_VI ROR_T1R1_ _VI ,319 1, Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_AFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-166 of 304

176 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 110% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh Spot Market Imports and Exports % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_AFC_KN0_000 Page 6A-167 of 304

177 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,550 7,550 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,509) (2,509) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,896 8,017 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,493 2,004 1, ,562 BCH_VI WBBio_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) ,161 1,100 3,616 BCH_SE WBBio_WK Firm Energy (GWh) 3,200 2,605 1,572 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_KN WBBio_KM BCH_EK WBBio_EK BCH_LM ROR_T1R1_90-100_LM BCH_KN ROR_T1R1_80-100_KN Clean Objective (%) - performance during the period - BCH_MCA500 MW PS_MCA Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-168 of 304

178 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 97% 96% 96% 97% 97% 97% 98% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BFC_KN0_000 Page 6A-169 of 304

179 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,578 6,578 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (966) (966) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,466 8,587 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 1,596 1,885 1, ,547 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) ,098 1,100 3,591 BCH_SE WBBio_WK Firm Energy (GWh) 3,785 2,390 1,066 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_NC ROR_T1R1_70-100_NC ,230 GWh 1,578 MW BCH_LM 500 MW PS_LM BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 97% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_CFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-170 of 304

180 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 97% 99% 99% 99% 100% 100% 100% 100% 100% 100% 99% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CFC_KN0_000 Page 6A-171 of 304

181 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 9,000 9,000 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,720) (4,720) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,135 7,256 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,643 1,100 3,393 BCH_VI WBBio_VI Firm Energy (GWh) 5,337 5,199 1,428 5,100 17, BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , DSM Level in: BCH_EK ROR_T1R1_80-100_EK ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_ _KN BCH_SE WBBio_WK Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 96% 96% BCH_PR Wind_PC Lowest % 93% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_VI Wind_VI Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) BCH_BQN ROR_T1R1_ _BQL Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_REV ROR_T1R1_90-110_REV Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_DFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-172 of 304

182 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 96% 96% 96% 96% 96% 96% 97% 97% 97% 97% 97% 97% 98% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DFC_KN0_000 Page 6A-173 of 304

183 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,585 6,585 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (990) (990) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,450 8,570 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 1,596 1,885 1, ,547 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) ,098 1,100 3,608 BCH_SE WBBio_WK Firm Energy (GWh) 4,204 2,004 1,066 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_NC ROR_T1R1_70-100_NC ,532 GWh 1,161 MW BCH_LM 500 MW PS_LM ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_EFC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-174 of 304

184 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 98% 99% 99% 99% 100% 100% 100% 100% 100% 100% 100% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_EFC_KN0_000 Page 6A-175 of 304

185 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 15,786 15,786 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,571) (2,571) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 14,119 15,635 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,111 2,605 1, ,053 BCH_NC ROR_T1R1_70-100_NC BCH_NC 100 MW SCGT NC ,050 1, Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) , ,842 BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 6,047 3,876 1, ,730 BCH_VI ROR_T1R1_90-110_VI BCH_LM MSW2_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) 1, , ,306 BCH_PR Wind_PC Firm Energy (GWh) 13,136 6,571 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_EK ROR_T1R1_80-100_EK BCH_VI WBBio_VI DSM Level in: BCH_LM ROR_T1R1_ _LM , ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_BQN ROR_T1R1_ _BQL BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_PR Wind_PC Lowest % 96% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_NC WBBio_PG Year Project Description Between Capacity (MW) BCH_SE WBBio_WK Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_EK WBBio_EK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_VI Wind_VI Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_KN ROR_T1R1_ _KN Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_KN WBBio_KM Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI MSW1_VI Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_PR Wind_PC H2L_ANT_KN0_100 BCH_PR Wind_PC Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-176 of 304

186 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 97% 97% 96% 97% 97% 97% 97% 98% 97% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_ANT_KN0_100 Page 6A-177 of 304

187 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year BCH_PR Wind_PC BCH_NC Wind_NC BCH_VI Wind_VI BCH_VI ROR_T1R1_ _VI BCH_REV Wind_SI BCH_LM 500 MW PS_LM BCH_PR Wind_PC BCH_PR Wind_PC BCH_CI Wind_PC BCH_KN Wind_SI BCH_KN Wind_SI BCH_VI Wind_VI H2L_ANT_KN0_100 Page 6A-178 of 304

188 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 14,822 14,822 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,047) (2,047) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,679 15,195 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,846 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,087 3,692 1, ,586 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) 1, , ,303 BCH_PR Wind_PC Firm Energy (GWh) 13,351 6,238 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_BQN ROR_T1R1_ _BQL Average % 96% 95% BCH_PR Wind_PC Lowest % 95% 94% BCH_PR Wind_PC BCH_VI Wind_VI BCH_PR Wind_PC BCH_NC WBBio_PG Transmission Expansion BCH_KN WBBio_KM Year Project Description Between Capacity (MW) BCH_KN ROR_T1R1_ _KN Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_EK ROR_T1R1_80-100_EK Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_VI Wind_VI Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_REV ROR_T1R1_90-110_REV Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_KN Wind_SI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_VI MSW1_VI H2L_BNT_KN0_100 BCH_NC ROR_T1R1_ _NC Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-179 of 304

189 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 97% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_BNT_KN0_100 Page 6A-180 of 304

190 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year BCH_LM ROR_T1R1_ _LM , BCH_LM 500 MW PS_LM BCH_NC Wind_NC BCH_VI Wind_VI BCH_REV Wind_SI BCH_PR Wind_PC BCH_CI Wind_PC BCH_KN Wind_SI BCH_VI Wind_VI BCH_VI Wind_VI H2L_BNT_KN0_100 Page 6A-181 of 304

191 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,732 13,732 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (730) (730) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,905 15,421 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,870 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 7,063 2,738 1, ,608 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) 1, , ,305 BCH_PR Wind_PC Firm Energy (GWh) 13,561 5,937 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_BQN ROR_T1R1_ _BQL Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_VI Wind_VI Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_NC WBBio_PG Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_VI Wind_VI Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_LM 1000 MW PS_LM , L14 CI to KN CI to KN 2120 Line 1133 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN Wind_SI Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_PR Wind_PC Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_NC Wind_NC H2L_CNT_KN0_100 BCH_VI Wind_VI Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-182 of 304

192 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_CNT_KN0_100 Page 6A-183 of 304

193 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year BCH_LM 500 MW PS_LM BCH_PR Wind_PC BCH_VI Wind_VI BCH_VI MSW1_VI BCH_LM ROR_T1R1_ _LM , BCH_CI Wind_PC BCH_KN Wind_SI BCH_KN Wind_SI BCH_KN Wind_SI BCH_VI Wind_VI BCH_REV Wind_SI H2L_CNT_KN0_100 Page 6A-184 of 304

194 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 16,322 16,322 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,722) (3,722) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,503 15,019 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_NC 100 MW SCGT NC ,050 1, Firm Energy (GWh) 536 2,605 1, ,920 BCH_KN ROR_T1R1_70-80_KN BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,854 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 6,150 3,805 1, ,762 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) 1, , ,305 BCH_PR Wind_PC Firm Energy (GWh) 12,973 7,240 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_KN ROR_T1R1_ _KN BCH_BQN ROR_T1R1_ _BQL BCH_REV Revelstoke Unit Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 95% 95% BCH_PR Wind_PC Lowest % 93% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_PR Wind_PC Transmission Expansion BCH_NC WBBio_PG Year Project Description Between Capacity (MW) BCH_KN WBBio_KM Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_LM 1000 MW PS_LM , Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_VI ROR_T1R1_ _VI ,319 1, L14 CI to KN CI to KN 2120 Line 1133 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_NC ROR_T1R1_ _NC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_EK ROR_T1R1_80-100_EK Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI Wind_VI Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_VI Wind_VI Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_VI MSW1_VI Cluster FTN to NPR cct FTN to NPR 464 Line 1145 BCH_PR Wind_PC H2L_DNT_KN0_100 BCH_PR Wind_PC Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-185 of 304

195 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 93% 93% 94% 94% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_DNT_KN0_100 Page 6A-186 of 304

196 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year BCH_NC ROR_T1R1_ _NC BCH_SE ROR_T1R1_ _SE BCH_LM 500 MW PS_LM BCH_MCA ROR_T1R1_ _MCA BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC Wind_NC BCH_VI ROR_T1R1_ _VI BCH_REV ROR_T1R1_ _REV BCH_PR Wind_PC BCH_CI Wind_PC BCH_KN Wind_SI BCH_KN Wind_SI BCH_VI Wind_VI BCH_VI Wind_VI BCH_REV Wind_SI H2L_DNT_KN0_100 Page 6A-187 of 304

197 Load Input Assumptions High 0 Load DSM DSM Option 2 Low Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 13,695 13,695 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (761) (761) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 904 2,420 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 13,838 15,354 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) 1,111 2,004 1, ,894 BCH_NC 100 MW SCGT NC ,050 1, BCH_KN ROR_T1R1_70-80_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) , ,870 BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 7,063 2,738 1, ,608 BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) 1, , ,311 BCH_PR Wind_PC Firm Energy (GWh) 14,330 5,145 3, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,901 GWh 749 MW BCH_PR Wind_PC ,835 GWh 1,045 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_LM ROR_T1R1_90-100_LM Clean Objective (%) - performance during the period - BCH_REV Revelstoke Unit Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 98% 95% BCH_PR Wind_PC Lowest % 97% 94% BCH_PR Wind_PC BCH_PR Wind_PC BCH_KN ROR_T1R1_80-100_KN BCH_BQN ROR_T1R1_ _BQL Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_NC WBBio_PG Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line 1152 BCH_EK WBBio_EK Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_VI Wind_VI Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_LM 1000 MW PS_LM , L14 CI to KN CI to KN 2120 Line 1133 BCH_VI Wind_VI Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 1200 Line 1151 BCH_KN WBBio_KM Cluster BUI to CBL cct BUI to CBL 3229 Line 1151 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 382 Line 1152 BCH_KN Wind_SI Cluster CBL to DMR cct CBL to DMR 765 Line 1152 BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line 1152 BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 3721 Line 1152 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 323 Line 1133 BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC 646 Line 1133 BCH_KN ROR_T1R1_ _KN Cluster DLK to TGC cct DLK to TGC 1200 Line 1133 BCH_VI ROR_T1R1_ _VI ,319 1, Cluster DLK to TGC cct DLK to TGC 3329 Line 1133 BCH_PR Wind_PC Cluster FTN to NPR cct FTN to NPR 232 Line 1145 BCH_NC ROR_T1R1_ _NC H2L_ENT_KN0_100 BCH_VI Wind_VI Other Initial LNG, No HRB/FN Load, Gas as Capacity Near Term, 20 Years,10 Wind adder, Bundle Page 6A-188 of 304

198 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 94% 94% 94% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 96% 96% 100.0% MW by Resource Type % 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 6000 Spot Market Imports and Exports 98% 98% 97% 97% 97% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 98% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh H2L_ENT_KN0_100 Page 6A-189 of 304

199 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year BCH_VI Wind_VI BCH_VI MSW1_VI BCH_LM 500 MW PS_LM BCH_NC Wind_NC BCH_CI Wind_PC BCH_KN Wind_SI BCH_REV Wind_SI BCH_PR Wind_PC BCH_NC Wind_NC ,493 1, BCH_KN Wind_SI H2L_ENT_KN0_100 Page 6A-190 of 304

200 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 3,608 3,608 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (5,451) (5,451) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -1,040 1,702 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_REV Revelstoke Unit Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) 0 1, ,786 BCH_KN ROR_T1R1_80-100_KN BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,060 BCH_PR Wind_PC Firm Energy (GWh) 4,423 3, , BCH_PR Wind_PC BCH_VI WBBio_VI BCH_LM ROR_T1R1_ _LM , BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,229 GWh 1,600 MW BCH_PR Wind_PC ,710 GWh 2,146 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_EK ROR_T1R1_80-100_EK Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 96% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_ANC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-191 of 304

201 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_ANC_KN0_000 Page 6A-192 of 304

202 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 2,274 2,274 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,966) (2,966) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 111 2,853 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_LM ROR_T1R1_60-80_LM Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_VI ROR_T1R1_90-110_VI Wind Run of River Other Site C Total BCH_LM MSW2_LM Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) BCH_LM 500 MW PS_LM Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,107 Firm Energy (GWh) 0 2, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 97% 96% Lowest % 96% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_BNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-193 of 304

203 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 97% 97% 97% 97% 97% 97% 97% 97% 96% 97% 97% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_BNC_KN0_000 Page 6A-194 of 304

204 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,205 1,205 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,325) (1,325) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 684 3,426 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI Wind_VI Dep. Capacity (MW) BCH_LM 500 MW PS_LM Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_KN ROR_T1R1_80-100_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,080 Firm Energy (GWh) 103 1, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_CNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-195 of 304

205 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 99% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_CNC_KN0_000 Page 6A-196 of 304

206 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 4,344 4,344 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (6,154) (6,154) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions -1,006 1,736 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_REV Revelstoke Unit Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_LM MSW2_LM BCH_VI ROR_T1R1_80-90_VI Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) ,001 BCH_LM ROR_T1R1_90-100_LM BCH_KN ROR_T1R1_80-100_KN Supply Totals through BCH_VI WBBio_VI Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,017 BCH_PR Wind_PC Firm Energy (GWh) 3,790 3, , BCH_KN ROR_T1R1_ _KN BCH_EK ROR_T1R1_80-100_EK BCH_LM ROR_T1R1_ _LM , BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,229 GWh 1,600 MW BCH_PR Wind_PC ,710 GWh 2,146 MW BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 96% 96% Lowest % 94% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_DNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-197 of 304

207 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 94% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 97% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_DNC_KN0_000 Page 6A-198 of 304

208 Load Input Assumptions Low 0 Load DSM DSM Option 2 High Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 1,248 1,248 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (1,339) (1,339) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 803 3,546 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 713 3,455 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total BCH_VI Wind_VI Dep. Capacity (MW) BCH_LM 500 MW PS_LM Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_NC ROR_T1R1_70-100_NC Firm Energy (GWh) BCH_KN ROR_T1R1_70-80_KN Supply Totals through Wind Run of River Other Site C Total Avg. UEC Dep. Capacity (MW) , ,093 Firm Energy (GWh) 640 1, , DSM Level in: 10,229 GWh 1,600 MW 13,710 GWh 2,146 MW Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 99% 95% Lowest % 98% 95% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A L2H_ENC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-199 of 304

209 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 100.0% % MW by Resource Type % 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh L2H_ENC_KN0_000 Page 6A-200 of 304

210 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,932 7,932 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,823) (2,823) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,964 8,085 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_NC ROR_T1R1_70-100_NC Supply Totals through BCH_KN ROR_T1R1_80-100_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_90-110_VI Dep. Capacity (MW) BCH_LM ROR_T1R1_80-90_LM Firm Energy (GWh) 1,002 3, ,790 BCH_PR Wind_PC BCH_EK ROR_T1R1_80-100_EK Supply Totals through BCH_LM ROR_T1R1_90-100_LM Wind Run of River Other Site C Total Avg. UEC BCH_REV Revelstoke Unit Dep. Capacity (MW) , ,316 BCH_KN ROR_T1R1_ _KN Firm Energy (GWh) 6,150 5,322 1, , BCH_VI WBBio_VI BCH_BQN ROR_T1R1_ _BQL BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , DSM Level in: BCH_LM 1000 MW PS_LM , ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_VI Wind_VI BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_LM 1000 MW PS_LM , Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_NC ROR_T1R1_ _NC Lowest % 98% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_REV ROR_T1R1_90-110_REV BCH_PR Wind_PC Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M2M_ANC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-201 of 304

211 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_ANC_KN0_000 Page 6A-202 of 304

212 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 7,469 7,469 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,090) (2,090) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,234 8,355 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,493 2, ,637 BCH_VI WBBio_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) , ,321 BCH_LM ROR_T1R1_90-100_LM Firm Energy (GWh) 7,063 4,290 1, , BCH_PR Wind_PC BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_KN ROR_T1R1_80-100_KN BCH_LM ROR_T1R1_ _LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_KN ROR_T1R1_ _KN Average % 97% 96% BCH_EK ROR_T1R1_80-100_EK Lowest % 96% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_VI Wind_VI Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_NC ROR_T1R1_ _NC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_BQN ROR_T1R1_ _BQL Cluster BUI to CBL cct BUI to CBL 615 Line 1151 BCH_REV ROR_T1R1_90-110_REV Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M2M_BNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-203 of 304

213 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 8000 Spot Market Imports and Exports 97% 97% 96% 96% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BNC_KN0_000 Page 6A-204 of 304

214 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,362 6,362 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (680) (680) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,537 8,658 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 2,061 1, ,701 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) , ,377 BCH_PR Wind_PC Firm Energy (GWh) 7,063 3,559 1, , BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_SE WBBio_WK ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_90-100_LM Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion BCH_KN WBBio_KM Year Project Description Between Capacity (MW) BCH_KN ROR_T1R1_80-100_KN Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_NC WBBio_PG Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_LM ROR_T1R1_ _LM , Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M2M_CNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-205 of 304

215 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 6000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% 100% 100% 100% 100% % % 70% 60% 50% 40% 30% 20% 10% 0% Percentage of Clean Generation GWh Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CNC_KN0_000 Page 6A-206 of 304

216 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 8,642 8,642 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,778) (3,778) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,718 7,839 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) , ,314 BCH_VI WBBio_VI Firm Energy (GWh) 6,150 5,402 1, , BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_KN ROR_T1R1_ _KN Clean Objective (%) - performance during the period - BCH_EK ROR_T1R1_80-100_EK Based on Generation Based on Firm Capability BCH_BQN ROR_T1R1_ _BQL Average % 96% 96% BCH_PR Wind_PC Lowest % 93% 95% BCH_PR Wind_PC BCH_REV ROR_T1R1_90-110_REV BCH_SE ROR_T1R1_ _SE BCH_VI Wind_VI Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC 270 #N/A M2M_DNC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-207 of 304

217 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 97% 97% 100% 90% % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DNC_KN0_000 Page 6A-208 of 304

218 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Site C not included as an option Thermal Resources Thermal Resources excluded PV of G& T Resource cost ( - ) - $ millions 6,370 6,370 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (734) (734) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 6,491 8,612 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) BCH_VI WBBio_VI Firm Energy (GWh) 2,061 1, ,701 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_VI Wind_VI Dep. Capacity (MW) , ,416 BCH_PR Wind_PC Firm Energy (GWh) 8,200 2,605 1, , BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_SE WBBio_WK ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_PR Wind_PC Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_90-100_LM Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC ROR_T1R1_70-100_NC Transmission Expansion BCH_KN WBBio_KM Year Project Description Between Capacity (MW) BCH_KN ROR_T1R1_80-100_KN Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL 308 Line 1151 BCH_VI Wind_VI Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line 1145 M2M_ENC_KN0_000 Other Initial LNG, No HRB/FN Load, No Gas, 20 Years,10 Wind adder, Bundle Page 6A-209 of 304

219 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% 6000 Spot Market Imports and Exports % 98% 99% 99% 99% 99% 99% 99% 99% 99% 100% 100% 100% 100% 100% 100% 100% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_ENC_KN0_000 Page 6A-210 of 304

220 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario A - Mid GHG & High Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 8,115 8,115 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (3,664) (3,664) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,306 7,427 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) 0 1, ,322 BCH_LM MSW2_LM BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_90-100_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 1,383 2, ,742 BCH_NC ROR_T1R1_70-100_NC BCH_VI WBBio_VI Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_PR Wind_PC Dep. Capacity (MW) ,643 1,100 3,397 BCH_KN ROR_T1R1_80-100_KN Firm Energy (GWh) 5,531 4,775 1,428 5,100 16, BCH_PR Wind_PC BCH_PR Site C ,100 5,100 5, BCH_PR Wind_PC BCH_LM 1000 MW PS_LM , DSM Level in: BCH_EK ROR_T1R1_80-100_EK ,532 GWh 1,161 MW BCH_PR Wind_PC ,230 GWh 1,578 MW BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI BCH_LM ROR_T1R1_ _LM , Clean Objective (%) - performance during the period - BCH_PR Wind_PC Based on Generation Based on Firm Capability BCH_PR Wind_PC Average % 99% 96% BCH_PR Wind_PC Lowest % 98% 95% BCH_PR Wind_PC BCH_PR Wind_PC BCH_NC WBBio_PG BCH_SE WBBio_WK Transmission Expansion BCH_VI ROR_T1R1_ _VI ,319 1, Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_AFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-211 of 304

221 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load % 98% 98% 98% 98% 98% 98% 99% 99% 99% 99% 99% 99% 99% 99% 99% 100% 110% 100% 90% 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh Spot Market Imports and Exports % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_AFT_KN0_800 Page 6A-212 of 304

222 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario B - Mid GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 7,577 7,577 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (2,645) (2,645) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,787 7,908 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_KN ROR_T1R1_70-80_KN Wind Run of River Other Site C Total BCH_VI ROR_T1R1_80-90_VI Dep. Capacity (MW) BCH_VI ROR_T1R1_90-110_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,029 BCH_VI WBBio_VI Firm Energy (GWh) 1,002 2,390 1, ,597 BCH_LM ROR_T1R1_90-100_LM BCH_REV Revelstoke Unit Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) ,584 1,100 3,960 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 1,383 3,559 2,408 5,100 12, BCH_PR Site C ,100 5,100 5, BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN DSM Level in: BCH_KN 100 MW SCGT KN ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_KN ROR_T1R1_80-100_KN BCH_LM 1000 MW PS_LM , BCH_PR Wind_PC BCH_LM ROR_T1R1_ _LM , Clean Objective (%) - performance during the period - Based on Generation Based on Firm Capability Average % 96% 95% Lowest % 95% 94% Transmission Expansion Year Project Description Between Capacity (MW) Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 Shunt Compenstation WSN KLY PR to KN 650 Line 1152 Shunt Compenstation NIC MDN KN to LM 570 Line Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 M2M_BFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-213 of 304

223 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 95% 96% 96% 96% 95% 95% 95% 95% 94% 94% 94% 100.0% % 80.0% MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports % 97% 96% 96% 97% 97% 96% 97% 97% 97% 97% 96% 96% 96% 95% 95% 95% 100% % % 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_BFT_KN0_800 Page 6A-214 of 304

224 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario D - High GHG & Mid Gas Net DSM Gross DSM Site C Site C included as an option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( - ) - $ millions 9,112 9,112 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( - ) - $ millions (4,903) (4,903) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( - ) - $ millions 855 2,976 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( - ) - $ millions 5,063 7,184 Resources Selected Capacity - MW Energy - GWh UEC / UCC * Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_LM ROR_T1R1_60-80_LM Wind Run of River Other Site C Total BCH_NC ROR_T1R1_70-100_NC Dep. Capacity (MW) BCH_KN ROR_T1R1_70-80_KN Firm Energy (GWh) BCH_VI ROR_T1R1_80-90_VI BCH_VI ROR_T1R1_90-110_VI Supply Totals through BCH_LM MSW2_LM Wind Run of River Other Site C Total BCH_LM ROR_T1R1_80-90_LM Dep. Capacity (MW) BCH_PR Wind_PC Firm Energy (GWh) 918 2, ,611 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM Supply Totals through BCH_REV Revelstoke Unit Wind Run of River Other Site C Total Avg. UEC BCH_KN ROR_T1R1_80-100_KN Dep. Capacity (MW) ,754 1,100 3,422 BCH_VI WBBio_VI Firm Energy (GWh) 4,331 4,888 3,180 5,100 17, BCH_KN 100 MW SCGT KN BCH_EK ROR_T1R1_80-100_EK BCH_PR Site C ,100 5,100 5, BCH_KN 100 MW SCGT KN DSM Level in: BCH_KN 100 MW SCGT KN ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN BCH_PR Wind_PC BCH_KN 100 MW SCGT KN Clean Objective (%) - performance during the period - BCH_LM ROR_T1R1_ _LM , Based on Generation Based on Firm Capability BCH_KN 100 MW SCGT KN Average % 95% 95% BCH_KN ROR_T1R1_ _KN Lowest % 93% 94% BCH_VI Wind_VI BCH_VI Wind_VI BCH_VI MSW1_VI BCH_VI ROR_T1R1_ _VI ,319 1, Transmission Expansion BCH_PR Wind_PC Year Project Description Between Capacity (MW) BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line 1146 BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line 1152 BCH_PR Wind_PC Shunt Compenstation NIC MDN KN to LM 570 Line 1150 BCH_KN WBBio_KM Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line 1152 BCH_SE WBBio_WK Cluster BUI to CBL cct BUI to CBL 308 Line Cluster BUI to CBL cct BUI to CBL 615 Line Cluster BUI to CBL cct BUI to CBL 1200 Line Cluster BUI to CBL cct BUI to CBL 3229 Line Cluster CBL to DMR cct CBL to DMR 382 Line Cluster CBL to DMR cct CBL to DMR 765 Line Cluster CBL to DMR cct CBL to DMR 1200 Line Cluster CBL to DMR cct CBL to DMR 3721 Line Cluster DLK to TGC cct DLK to TGC 323 Line Cluster DLK to TGC cct DLK to TGC 646 Line Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster DLK to TGC cct DLK to TGC 3329 Line Cluster FTN to NPR cct FTN to NPR 232 Line Cluster FTN to NPR cct FTN to NPR 464 Line 1145 M2M_DFT_KN0_800 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 20 Years,10 Wind adder, Bundle Page 6A-215 of 304

225 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 96% 96% 96% 96% 95% 95% 95% 95% 95% 94% 94% 100.0% 90.0% % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% Percentage of Clean Firm Capability % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean target based on capability Simulated Generation and Load 110% Spot Market Imports and Exports 93% 94% 95% 95% 96% 96% 96% 96% 96% 96% 96% 95% 95% 95% 95% 95% 96% 100% 90% 80% 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_DFT_KN0_800 Page 6A-216 of 304

226 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario C - Low GHG & Low Gas Net DSM Gross DSM Site C Included as an Option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( ) - $ millions 11,459 11,459 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( ) - $ millions (1,014) (1,014) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( ) - $ millions 334 3,996 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( ) - $ millions 13,306 14,441 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,134 BCH_VI WBBio_VI Firm Energy (GWh) 1,493 1,885 1, ,733 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through 2040 BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_KN 100 MW SCGT KN Dep. Capacity (MW) ,291 1,100 6,286 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 8,392 4,888 4,490 5,100 22, BCH_PR Wind_PC BCH_KN 100 MW SCGT KN BCH_PR Wind_PC BCH_KN 100 MW SCGT KN DSM Level in: BCH_PR Wind_PC ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_KN 100 MW SCGT KN BCH_KN 100 MW SCGT KN BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period BCH_PR Wind_PC Based on Generation Based on Firm Capability 2031 BCH_NC ROR_T1R1_70-100_NC Average % 97% 94% 2032 BCH_PR Wind_PC Lowest % 96% 93% 2032 BCH_LM ROR_T1R1_90-100_LM BCH_PR Wind_PC BCH_PR Wind_PC BCH_VI Wind_VI Transmission Expansion 2034 BCH_PR Wind_PC Year Project Description Between Capacity (MW) 2034 BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 2034 BCH_SE WBBio_WK Series compensation of 5L91 and 5L98 SE to KN 147 Line BCH_VI Wind_VI Shunt Compenstation NIC MDN KN to LM 570 Line BCH_VI Wind_VI Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line BCH_PR Wind_PC Shunt Compenstation WSN KLY PR to KN 650 Line BCH_PR Wind_PC Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line BCH_PR Wind_PC L46 KN to LM KN to LM 1384 Line BCH_PR Wind_PC L8 PR to CI PR to CI 1470 Line BCH_NC WBBio_PG Cluster BUI to CBL cct BUI to CBL Line BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL Line BCH_VI Wind_VI Cluster BUI to CBL cct BUI to CBL 1200 Line BCH_EK ROR_T1R1_80-100_EK Cluster BUI to CBL cct BUI to CBL 3229 Line BCH_LM ROR_T1R1_ _LM , Cluster CBL to DMR cct CBL to DMR Line BCH_LM 1000 MW PS_LM , Cluster CBL to DMR cct CBL to DMR Line BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR 1200 Line BCH_KN WBBio_KM Cluster CBL to DMR cct CBL to DMR 3721 Line BCH_KN ROR_T1R1_80-100_KN Cluster DLK to TGC cct DLK to TGC Line BCH_KN ROR_T1R1_ _KN Cluster DLK to TGC cct DLK to TGC Line BCH_VI ROR_T1R1_ _VI ,319 1, Cluster DLK to TGC cct DLK to TGC 1200 Line BCH_PR Wind_PC Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC #N/A M2M_CFT_KN0_850 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 30 Years,10 Wind adder, Bundle Page 6A-217 of 304

227 0 Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 96% 95% 94% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Heritage Thermal Wind Biomass Pumped Storage Load after DSM savings Existing IPP (inc. '06 call, Clean Power Call, etc) Site C Small Hydro CCGT/SCGT Other - MSW etc. Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 98% 99% 99% 99% 98% 98% 97% 97% 96% 96% 96% 96% 96% 96% 96% 96% 95% 96% 96% 96% 96% 96% 96% 96% 97% 96% 100% 90% % 70% 60% 50% 40% 30% Percentage of Clean Generation GWh % 10% % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_CFT_KN0_850 Page 6A-218 of 304

228 Load Input Assumptions Reference 0 (Mid) DSM DSM Option 2 Mid Market Scenario E - No GHG (in WECC) & Low Gas Net DSM Gross DSM Site C Included as an Option Thermal Resources Thermal Resources included as an option PV of G& T Resource cost ( ) - $ millions 11,439 11,439 * UECs for gas resources shown are indicative and are for illustration only. The UECs shown reflect the levelized cost over 20 years based on gas and GHG costs PV of Trade Revenue ( ) - $ millions (1,037) (1,037) for the market scenarios modeled. These simplifying assumptions were not used in the detailed NPV calculation yielding the overall portfolio costs shown. PV of DSM Option cost ( ) - $ millions 334 3,996 UCCs are shown for capacity rich projects. PV of Total Portfolio Cost ( ) - $ millions 13,264 14,398 Resources Selected Capacity - MW Energy - GWh UEC / UCC Year Zone Resource Installed Dependable Total Firm $/MWh or $/kw-year Supply Totals through BCH_PR Wind_PC Wind Run of River Other Site C Total BCH_KN ROR_T1R1_70-80_KN Dep. Capacity (MW) BCH_VI ROR_T1R1_80-90_VI Firm Energy (GWh) BCH_LM MSW2_LM BCH_LM ROR_T1R1_60-80_LM Supply Totals through BCH_LM ROR_T1R1_80-90_LM Wind Run of River Other Site C Total BCH_PR Wind_PC Dep. Capacity (MW) ,134 BCH_VI WBBio_VI Firm Energy (GWh) 1,493 1,885 1, ,733 BCH_VI ROR_T1R1_90-110_VI BCH_REV Revelstoke Unit Supply Totals through 2040 BCH_PR Wind_PC Wind Run of River Other Site C Total Avg. UEC BCH_KN 100 MW SCGT KN Dep. Capacity (MW) ,291 1,100 6,288 BCH_KN 100 MW SCGT KN Firm Energy (GWh) 8,394 5,012 4,490 5,100 22, BCH_KN 100 MW SCGT KN BCH_PR Wind_PC BCH_KN 100 MW SCGT KN BCH_PR Wind_PC DSM Level in: BCH_KN 100 MW SCGT KN ,532 GWh 1,161 MW BCH_KN 100 MW SCGT KN ,230 GWh 1,578 MW BCH_VI Wind_VI BCH_KN 100 MW SCGT KN BCH_PR Site C ,100 5,100 5, BCH_LM 1000 MW PS_LM , Clean Objective (%) - performance during the period BCH_PR Wind_PC Based on Generation Based on Firm Capability 2031 BCH_PR Wind_PC Average % 97% 94% 2031 BCH_NC ROR_T1R1_70-100_NC Lowest % 96% 93% 2032 BCH_PR Wind_PC BCH_LM ROR_T1R1_90-100_LM BCH_PR Wind_PC BCH_PR Wind_PC Transmission Expansion 2034 BCH_PR Wind_PC Year Project Description Between Capacity (MW) 2034 BCH_PR Wind_PC Series compensation of WSN-SKA 500 kv line CI to NC 580 #N/A 2034 BCH_PR Wind_PC Series compensation of 5L91 and 5L98 SE to KN 147 Line BCH_PR Wind_PC Shunt Compenstation NIC MDN KN to LM 570 Line BCH_PR Wind_PC Series Compenstation 5L1_2_3_7 PR to CI PR to KN 360 Line BCH_KN ROR_T1R1_80-100_KN Shunt Compenstation WSN KLY PR to KN 650 Line BCH_SE WBBio_WK Series Compenstation 5L11_12_13 PR to CI PR to KN 390 Line BCH_NC WBBio_PG L46 KN to LM KN to LM 1384 Line BCH_KN WBBio_KM L8 PR to CI PR to CI 1470 Line BCH_EK WBBio_EK Cluster BUI to CBL cct BUI to CBL Line BCH_PR Wind_PC Cluster BUI to CBL cct BUI to CBL Line BCH_LM ROR_T1R1_ _LM , Cluster BUI to CBL cct BUI to CBL 1200 Line BCH_LM 1000 MW PS_LM , Cluster BUI to CBL cct BUI to CBL 3229 Line BCH_PR Wind_PC Cluster CBL to DMR cct CBL to DMR Line BCH_KN ROR_T1R1_ _KN Cluster CBL to DMR cct CBL to DMR Line BCH_EK ROR_T1R1_80-100_EK Cluster CBL to DMR cct CBL to DMR 1200 Line BCH_VI ROR_T1R1_ _VI ,319 1, Cluster CBL to DMR cct CBL to DMR 3721 Line BCH_PR Wind_PC Cluster DLK to TGC cct DLK to TGC Line BCH_NC ROR_T1R1_ _NC Cluster DLK to TGC cct DLK to TGC Line BCH_KN Wind_SI Cluster DLK to TGC cct DLK to TGC 1200 Line Cluster FTN to NPR cct FTN to NPR 2729 Line Cluster HCT to NC cct HCT to NC #N/A M2M_EFT_KN0_850 Other Initial LNG, No HRB/FN Load, SCGT w 93% KL, 30 Years,10 Wind adder, Bundle Page 6A-219 of 304

229 0 Cluster FTN to NPR cct FTN to NPR 1200 Line 1145 Dependable Capacity - Supply Demand Balance Firm Energy - Supply Demand Balance % 95% 95% 95% 96% 95% 95% 94% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 93% 94% 94% 94% 94% 94% 94% 100.0% % % MW by Resource Type % 60.0% 50.0% 40.0% 30.0% 20.0% Percentage of Clean Firm Capability % % Her. Hydro, Res Smt, & MCA/REV addns Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal DSB Wind Small Hydro Biomass CCGT/SCGT Revelstoke Unit 6 Site C Pumped Storage Other - MSW etc. Bridging w. Market, CE, BGS Load after DSM Heritage Hydro Heritage Thermal Wind Biomass Pumped Storage Load after DSM savings Existing IPP (inc. '06 call, Clean Power Call, etc) Site C Small Hydro CCGT/SCGT Other - MSW etc. Clean target based on capability Simulated Generation and Load Spot Market Imports and Exports % % 98% 99% 99% 99% 99% 98% 97% 97% 97% 96% 96% 96% 96% 96% 96% 96% 96% 96% 96% 97% 97% 97% 96% 97% 97% 97% 100% % 80% 70% 60% 50% 40% 30% 20% Percentage of Clean Generation GWh % % Heritage Hydro & MCA/REV additions Existing IPP (inc. '06 call, Clean Power Call, etc) Heritage Thermal Other - MSW etc. Load after DSM savings Clean percentage based on generation Spot Energy Purchases GWh Spot Onpeak Energy Sales GWh Spot Offpeak Energy Sales GWh Net Spot Market Sales GWh M2M_EFT_KN0_850 Page 6A-220 of 304

230 6 PORTFOLIO ANALYSIS North Coast 6.1 Modelling Assumptions Figure 10 illustrates the modelling assumptions used to create 8 portfolios discussed in section 6.5. Another portfolio to consider LNG3 load was created to test the locational value of gas-fired generation, as discussed in section This portfolio was created with natural gas-fired generation being considered as a resource option in the Kelly Lake region while being consistent with the 93% clean objective. Figure 10 Modelling Map North Coast 6.2 Portfolio Output The portfolio output sheets for these portfolios are included on the following pages. Page 6A-221 of 304