New Contract Requests - December 2018 Contract No. Contractor Contract Title Estimated Contract Value

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5 New Contract Requests - December 2018 Contract No. Contractor Contract Title Estimated Contract Value Date Submitted to Procurement District Representative Procurement Officer CAISO RC Services Agreement $ 353, /3/2018 Jesus Lopez Nicona Butler Taborda Solutions Annual Oracle Software Support Renewal $ 72, /5/2018 Sam Lamb Nicona Butler TBD Microsoft Columbia Campus $ 240, /5/2018 Eric Hector Aldea Wolther Oath Oath HVAC & UPS $ 193, /5/2018 Eric Hector Aldea Wolther Emerson Automation Solutions, Power & Water Solutions Emerson Automation Solutions Services $ 700, /6/2018 Jeff Reams Betty Snell TBD Microsoft MWH Campus $ 240, /7/2018 Eric Hector Aldea Wolther NAVEX Global, Inc. PolicyTech Subscription $ 37, /11/2018 Leah Mauceri Leah Mauceri S TBD Touch-Up Painting for Priest Rapids Dam $ 218, /12/2018 Gerry McFaul Betty Snell Units SR Thyssenkrupp Elevator Routine Inspection, Maintenance, Repair of $ 250, /12/2018 Joseph Boitano Kristin Fleisher Elevator Systems Columbia Ford Lincoln Hyundai Purchase of Seven Ford Escapes $ 165, /14/2018 Matthew Wood Nicona Butler Avtec, Inc. ScoutCare Maintenance for Avtec $ 136, /18/2018 LeRoy Patterson Nicona Butler Telephone and Radio System Two replacement SUV as part of the 2019 $ 62, /20/2018 Matthew Wood Nicona Butler Replacement plan One 40' bucket truck replacement from $ 125, /20/2018 Matthew Wood Nicona Butler Versalift Facilities Operation and Condition $ 190, /27/2018 Tim Fleisher Nicona Butler S TBD Priest Rapids Right Embankment Utility $ 213, /28/2018 Brandon Little Kristin Fleisher Relocation Cisco Catalsyt 4K X4640 blades $ 315, /31/2018 Robert Bergman Aldea Wolther 1

6 Contracts Executed - December 2018 Contract No. Contractor Contract Title Awarded Contract Price Executed Date Completion Date District Representative Procurement Officer Network Computing Architects Fortinet Firewall Services Install $ 31, /4/ /31/2018 Kyle Hussey Aldea Wolther Inc Coleman Oil Co. LLC Supplying Fuel for District Vehicles and Crescent Bar Recreation Center for 2019 $ 701, /5/ /31/2019 Mike Phelps Nicona Butler CenturyLink N Grant County PUD PRI ICB Agmt_ $ 58, /6/ /6/2021 Larry Roberson Aldea Wolther Taborda Solutions Annual Oracle Software Support Renewal $ 72, /7/ /30/2019 Sam Lamb Nicona Butler North Central ESD Electrical Safety Classroom Instruction $ 104, /10/ /31/2021 Chuck Allen Aldea Wolther GE/Alstom Grid, Inc. GE Breaker Training $ 60, /10/2018 3/29/2019 William Coe Patrick Bishop Altec Industries Purchase of DM 45 Crane Truck $ 199, /12/2018 9/1/2019 Matthew Wood Nicona Butler Right! Systems Inc Technology Consultant Services $ 40, /14/ /14/2020 Mark Dean Nicona Butler North Sky Communications Fiber Optic Design and Construction Services $ 10,000, /14/ /31/2023 Russ Brethower Aldea Wolther Loomis Armored US, LLC Armored Car Services $ 375, /14/ /31/2023 Taffy Courteau Aldea Wolther Graybar Electric Supplying Two Fluke Versiv Analyzers $ 74, /17/ /31/2018 William Coe Patrick Bishop National Wood Treating Labor and Materials to Test and Treat District $ 1,063, /17/ /31/2020 William Coe Patrick Bishop Company Distribution Poles Vivid Learning Systems Vivid Learning - LMS $ 36, /21/ /31/2019 Nels Hanson Aldea Wolther Columbia Ford Lincoln Hyundai Purchase of Seven Ford Escapes $ 165, /28/2018 3/31/2019 Matthew Wood Nicona Butler 1

7 Closed Contracts - December 2018 Contract No. Contractor Contract Title Current Contract Price Close Out Date District Representative Procurement Officer Fire Protection Specialists LLC Ephrata Headquarters Server Room Fire $ 32, /10/2018 Bryan Mickle Nicona Butler Suppression System Update Washington State Department of WDFW OLAFT Facilities Use Agreement $ - 12/13/2018 Rolland O'Connor Cindy Inch Fish & Wildlife Mycoff, Fry & Prouse LLC Recruiting Services for Senior Manager of $ 50, /13/2018 Jeffrey Bishop Cindy Inch Finance Planning & Analysis (FP&A) Columbia Ford Lincoln Hyundai Two (2) 2018 Ford F150 $ 63, /17/2018 Matthew Wood Nicona Butler Oracle America, Inc. Annual Oracle Software Support Renewal $ 70, /17/2018 Sam Lamb Nicona Butler Columbia Ford Lincoln Hyundai Three (3) 2018 Ford Escapes $ 70, /17/2018 Matthew Wood Nicona Butler Corwin Ford Tri-Cities Four (4) 2018 Ford F-550 Cab & Chassis $ 165, /17/2018 Matthew Wood Nicona Butler Equipment Technology, LLC 2016 Dodge Ram 5500 Truck Chassis - $ 95, /17/2018 Matthew Wood Nicona Butler Service Truck Dell Marketing, Inc. Supplying Dell Latitude 5414 Laptops and $ 61, /17/2018 Sam Lamb Nicona Butler Extended Service Resources Global Professionals Financial Resource Consulting $ 350, /20/2018 Bonnie Overfield Betty Snell Western Peterbilt, Inc. Two (2) Peterbilt Model 567 Cab & Chassis $ 320, /27/2018 Matthew Wood Nicona Butler HDR Engineering, Inc. Professional Engineering Services for $ 1,000, /31/2018 Jeff Niehenke Betty Snell Wanapum Generator Upgrade A Stantec Consulting Services, Inc. General Professional Engineering Services $ 1,000, /31/2018 David Beech Lori Englehart-Jewell 1

8 Contract No. CO No. Cost Change Current Contract Price $ - $ 125, $ - $ 235, Northwest Anthropology, LLC $ 34, $ 178, Strategies 360, Inc $ (2,071.00) $ 261, $ - $ 148, Contractor Contract Title Change Order Description Approval Level CO Executed Date Wood Environment & Seismic Hazard Analysis Infrastructure Solutions, Support Services Inc. Waite Specialty Machine Works, Inc. Krueger Sheet Metal Company H 1 $ 2, $ 2,102, Potelco, Inc $ - $ 383, Ross Strategic $ 150, $ 350, The Atum Group Wanapum Library Development Change Orders Executed - December 2018 State Legislative & Regulatory Affairs Consulting - Strategies 360 Priest Rapids Machine Shop Ephrata Service Center Electric Shop Storage Reroof Mountain View Substation Expansion Construction PRCCHSC Facilitation Services Professional Services Consulting - FP&A Extend the Contract completion date. Extend the Contract completion date. Increase the Contract Price and extend the Contract completion date. Replace Technical Specification Section TS- 10. Decrease the Bid Unit Price of Bid Item No. 4 for Unit 2 only. Extend the Contract completion date. Increase the Contract Price to authorize additonal labor in accordance with Change Order Proposal No. 1. Extend the Contract completion date. Increase the Contract Price and extend the Contract completion date. Department Supervisor Managing Director Senior Manager/Plant Manager Department Manager Department Manager Department Supervisor Department Manager District Representative Contract Completion Date Procurement Officer 12/3/ /31/2019 Kristin Fleisher 12/4/2018 1/25/2020 Lori Englehart- Jewell 12/5/ /31/2019 Aldea Wolther 12/6/ /31/2019 Betty Snell 12/7/2018 2/4/2019 Nicona Butler 12/10/2018 2/22/2019 Patrick Bishop 12/11/2018 1/31/2019 Cindy Inch 12/11/ /31/2019 Cindy Inch $ - $ 333, Geo Services Professional Archaeological and Geological Consulting Services Extend the Contract completion date. Managing Director 12/11/ /31/2020 Lori Englehart- Jewell $ 2, $ 1,011, Halme Builders, Inc $ - $ 900, Confluence Health and Associates $ 142, $ 864, BioAnalysts Incorporated $ - $ 1,820, CESS Facility Building Rebuild Occupational Medical Services Hatchery Monitoring and Evaluations in the Wenatchee Basin Crescent Bar Recreation Central Washington Area Operations and Management Group LLC Maintenance Increase the Contract Price. Replace Revised Appendix "A" - Rate Schedule. Increase the Contract Price, extend the Contract completion date and replace Apendix "A" Rate Schedule. Extend the Contract completion date $ 100, $ 205, DataPro Solutions, Inc. Scanning Services Increase the Contract Price $ 138, $ 478, Desautel Hege (DH) Web and Graphic Design $ 20, $ 205, Infuse Strategy, LLC Lean Training and Mentoring Increase the Contract Price and extend the Contract completion date. Increase the Contract Price. Department Manager Senior Manager/Plant Manager Managing Director Department Manager Senior Manager/Plant Manager Senior Manager/Plant Manager Senior Manager/Plant Manager 12/11/2018 2/14/2019 Nicona Butler 12/12/ /31/2020 Aldea Wolther 12/12/2018 8/31/2020 Cindy Inch 12/13/2018 1/31/2019 Cindy Inch 12/14/ /31/2019 Aldea Wolther 12/14/ /31/2019 Aldea Wolther 12/14/ /31/2019 Lori Englehart- Jewell 1

9 Change Orders Executed - December 2018 Contract No. CO No. Cost Change Current Contract Price Contractor Contract Title Change Order Description Approval Level CO Executed Date Contract Completion Date Procurement Officer $ 98, $ 96,599, Voith Hydro, Inc $ - $ 1,560, Del Sol, Inc $ 64, $ 265, DataPro Solutions, Inc $ - $ 50, FocusGeo LLC $ - $ 42, Bourke Business Intelligence $ 87, $ 327, Cogsdale Priest Rapids Turbine Upgrades District Wide Janitorial Services Licensing and Support Services for File 360 Increase Contract Price for additional work to the existing intermediate head cover and the existing outer head cover. Extend the Contract completion date. Increase the Contract Price and extend the Contract completion date. Department Manager Department Manager Senior Manager/Plant Manager Cultural Resource Geodatabase Maintenance Extend the Contract completion date. Managing Director Stakeholder Relationship Assessment 2016 Cogsdale Support and Maintenance $ 60, $ 196, Grant County EDC Economic Development $ 53, $ 694, Bentley System, Incorporated $ (15,676.00) $ 345, Avtec, Inc $ - $ 45, ATS Inland NW Professional Services for Upgrade and Maintenance of ebid System Supply and Install Telephone System for Ephrata and Moses Lake Control Centers Ephrata Service Center Vehicle Shop HVAC Control System Upgrade Extend the Contract completion date. To extend the Contract term and increase the not to exceed Contract Price. Increase the Contract Price and extend the Contract completion date. Extend the Contract term and increase the NTE Contract Price. Extend the Contract completion date and decrease the NTE Contract Price. Extend the Contract completion date. Senior Manager/Plant Manager Senior Manager/Plant Manager Senior Manager/Plant Manager District Representative Managing Director Department Manager 12/17/ /31/2027 Betty Snell 12/20/2018 1/31/2019 Nicona Butler 12/21/ /31/2019 Nicona Butler 12/21/2018 3/31/2019 Lori Englehart- Jewell 12/21/2018 6/1/2019 Aldea Wolther 12/24/ /31/2019 Nicona Butler 12/27/ /31/2020 Aldea Wolther 12/28/ /31/2019 Nicona Butler 12/29/2018 1/31/2019 Nicona Butler 12/30/2018 1/31/2019 Nicona Butler 2

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12 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS May 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 744 Gross Generation (B) 489,336,800 Plant Use 675,400 Max. Hourly Generation (C) 783,400 Net Generation 488,661,400 Time of Max. Hourly Gen. 05/01/ Water for Generation (D) 7,644,150 A.F. Plant Factor 59.63% Water Bypassed (E) 10,569,090 A.F. Utilization Factor 71.02% Water for Fish (F) 129,270 A.F. Water Factor: 41.67% Average Hydraulic Head: 72.2 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 50, W-2 54, Exciter Undervoltage Condition SEL 300G-1 W-3 55, Repair leaking Thrust Bearing Cooling Water Discharge Pipe W-4 54, Slip ring maintenance W-5 55, W-6 52, for Noise Investigation on Rotor W-7 55, W Generator Replacement W-9 55, W-10 55, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

13 Plant Service Interruptions Plant: WANAPUM May, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 05/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 05/01/ :10 8:10 W-4 W-432 MAN 11 Slip ring maintenance 05/02/ :07 8:07 W-2 W-232 MAN 11 Repair leaking Thrust Bearing Cooling Water Discharge Pipe 05/19/ :13 0:13 W-2 W-232 OTH 14 Exciter Undervoltage Condition SEL 300G-1 05/21/ :18 0:18 W-2 W-232 OTH 14 Exciter Undervoltage Condition SEL 300G-1 05/30/ :56 31:56 W-6 W-632 MAN 11 for Noise Investigation on Rotor Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 06/04/ :54:58 AM Page 1 of 1

14 WANAPUM POWERPLANT GENERATION SUMMARY MAY 2016 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , W , , (A) W , , W , , (B) W , , W , , (C) W , , W (D) 3, W , , W , , PROJECT TOTAL: ,336 2,629, , PLANT USE: 675 3,511 NET GENERATION: 488,661 2,626,485 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Exciter Undervoltage Condition SEL 300G-1 and Repair Leaking Thrust Bearing Cooling Water Discharge Pipe (B) Slip Ring Maintenance (C) Noise Investigation on Rotor (D) Generator Replacement WANGENSUM.XLS

15 WANAPUM POWERPLANT WATER UTILIZATION MAY 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 18,342,510 1,174,187 GENERATION 7,644, ,337 FISH FACILITIES 129,270 8,275 FISH SPILL 1,260,394 80,684 9,308, ,892

16 Wanapum Water Utilization Report May 2018 MONTHLY WATER USAGE FISH FACILITIES 1% FISH SPILL 7% 51% GENERATION 41% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 3% 21% FISH FACILITIES 1% GENERATION 75% GENERATION FISH FACILITIES FISH SPILL

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19 Plant Service Interruptions Plant: PRIEST RAPIDS May, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 05/01/ : :48 P OTH 11 P-02 Turbine Replacement 05/01/ :31 32:31 P MAN 14 Going Under CLRS For Meter Replacement 05/08/ :07 0:07 P OTH 12 65SD 05/16/ :58 26:58 P MAN 14 Investigate Wobble in Turbine Guide Bearing 05/24/ :22 0:22 P GRD 12 Line 2 Trip A Phase to Ground 05/24/ :22 0:22 P GRD 12 Line 2 Trip A Phase to Ground 05/24/ :22 0:22 P GRD 12 Line 2 Trip A Phase to Ground 05/24/ :22 0:22 P GRD 12 Line 2 Trip A Phase to Ground 05/28/ :00 1:00 P OTH 12 Midway 230 KV Bkr OPENED for unknown reason per BPA system operator Carlson (Black) 05/28/ :00 1:00 P OTH 12 Midway 230 KV Bkr OPENED for unknown reason per BPA system operator Carlson (Black) 05/28/ :56 0:56 P OTH 12 Midway 230 KV Bkr OPENED for unknown reason per BPA system operator Carlson (Black) Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 06/18/ :44:42 AM Page 1 of 1

20 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY MAY 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , (A) P , (B) 2, P , , (A) 3.67 P , , (A) P , , (C) P , , (C) P , , (C) 8.47 P , , (C) 5.45 P , , (D) 1, P , , (E) PROJECT TOTAL: ,869 2,358, , PLANT USE: 1,234 4,511 NET GENERATION: 410,635 2,353,907 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Midway 230 KV Breaker Opened for Unknown Reason per BPA Systems Operator Carlson (B) Turbine/ Generator Rehab (C) Line 2 Trip A Phase to Ground (D) Investigate Wobble in Turbine Guide Bearing (E) Meter Replacement PRGENSUM.XLS

21 PRIEST RAPIDS POWERPLANT WATER UTILIZATION MAY 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 18,875, ,161 GENERATION 7,735, ,571 FISH FACILITIES 93,210 4,875 FISH SPILL 1,225,807 64,110 9,820, ,605

22 PRIEST RAPIDS WATER UTILIZATION REPORT MAY 2018 MONTHLY WATER USAGE FISH FACILITIES 0% 52% FISH SPILL 7% GENERATION 41% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 2% 24% FISH FACILITIES 1% GENERATION 73% GENERATION FISH FACILITIES FISH SPILL

23 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS June 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 720 Gross Generation (B) 515,585,100 Plant Use 636,500 Max. Hourly Generation (C) 806,500 Net Generation 514,948,600 Time of Max. Hourly Gen. 06/30/ Water for Generation (D) 7,610,400 A.F. Plant Factor 64.92% Water Bypassed (E) 3,710,880 A.F. Utilization Factor 73.12% Water for Fish (F) 125,100 A.F. Water Factor: 66.49% Average Hydraulic Head: 76.2 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 53, W-2 57, Exciter Repair Exciter Trip, 5C and 86 Gov. W-3 57, W-4 57, W-5 57, W-6 57, W-7 58, W Generator Replacement W-9 58, W-10 58, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

24 Plant Service Interruptions Plant: WANAPUM June, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 06/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 06/02/ :39 0:39 W-2 W-232 OTH 14 Exciter Trip, 5C and 86 Gov. 06/20/ :56 0:56 W-2 W-232 MAN 11 Exciter Repair Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 07/02/ :33:25 AM Page 1 of 1

25 WANAPUM POWERPLANT GENERATION SUMMARY JUNE 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , W , , (A) W , , W , , W , , W , , W , , W (B) 4, W , , W , , PROJECT TOTAL: ,585 3,145, , PLANT USE: 637 4,147 NET GENERATION: 514,949 3,141,434 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Exciter Repair (B) Generator Replacement WANGENSUM.XLS

26 WANAPUM POWERPLANT WATER UTILIZATION JUNE 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 11,446, ,463 GENERATION 7,610, ,585 FISH FACILITIES 125,100 8,475 FISH SPILL 1,182,981 80,144 2,527, ,259

27 Wanapum Water Utilization Report June 2018 MONTHLY WATER USAGE 22% FISH SPILL 10% FISH FACILITIES 1% GENERATION 67% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE 21% FISH SPILL 5% FISH FACILITIES 1% GENERATION 73% GENERATION FISH FACILITIES FISH SPILL

28 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS June 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 720 Gross Generation (B) 421,722,300 Plant Use 1,263,700 Max. Hourly Generation (C) 739,000 Net Generation 420,458,600 Time of Max. Hourly Gen. 06/23/ Water for Generation (D) 7,066,380 A.F. Plant Factor 61.29% Water Bypassed (E) 4,274,530 A.F. Utilization Factor 77.33% Water for Fish (F) 77,400 A.F. Water Factor: 61.89% Average Hydraulic Head: 69.5 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 46, P P-02 Turbine Replacement P-3 46, P-4 49, P-5 48, P-6 46, P-7 46, P-8 55, P-9 42, Servo sleeve malfunction P-10 39, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

29 Plant Service Interruptions Plant: PRIEST RAPIDS June, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 06/01/ : :48 P OTH 11 P-02 Turbine Replacement 06/04/ :45 29:45 P MAN 6 Servo sleeve malfunction Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 07/02/ :41:21 AM Page 1 of 1

30 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY JUNE 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , P , (A) 3, P , , P , , P , , P , , P , , P , , P , , (B) 1, P , , PROJECT TOTAL: ,723 2,780, , PLANT USE: 1,264 5,775 NET GENERATION: 420,459 2,774,366 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Turbine Generator Replacement (B) Servo Sleeve Malfunction PRGENSUM.XLS

31 PRIEST RAPIDS POWERPLANT WATER UTILIZATION JUNE 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 11,418, ,446 GENERATION 7,066, ,722 FISH FACILITIES 77,400 4,619 FISH SPILL 1,181,071 70,486 3,093, ,618

32 PRIEST RAPIDS WATER UTILIZATION REPORT JUNE 2018 MONTHLY WATER USAGE 27% FISH SPILL 10% FISH FACILITIES 1% GENERATION 62% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE 24% FISH SPILL 4% FISH FACILITIES 1% GENERATION 71% GENERATION FISH FACILITIES FISH SPILL

33 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS July 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 744 Gross Generation (B) 475,070,300 Plant Use 710,200 Max. Hourly Generation (C) 802,400 Net Generation 474,360,100 Time of Max. Hourly Gen. 07/10/ Water for Generation (D) 6,819,040 A.F. Plant Factor 57.89% Water Bypassed (E) 1,275,850 A.F. Utilization Factor 72.75% Water for Fish (F) 129,270 A.F. Water Factor: 82.91% Average Hydraulic Head: 78.3 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 40, W-2 51, W-3 30, Investigate/Repair oil leak. (Gehling) W-4 55, W-5 57, W-6 59, W-7 59, W Generator Replacement W-9 60, W-10 60, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

34 Plant Service Interruptions Plant: WANAPUM July, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 07/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 07/16/ :52 269:52 W-3 W-332 MAN 14 Investigate/Repair oil leak. (Gehling) Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 08/07/ :36:40 AM Page 1 of 1

35 WANAPUM POWERPLANT GENERATION SUMMARY JULY 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , W , , W , , (A) W , , W , , W , , W , , W (B) 5, W , , W , , PROJECT TOTAL: ,071 3,620,652 1, , PLANT USE: 710 4,857 NET GENERATION: 474,361 3,615,795 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Investigate/Repair Oil Leak (B) Generator Replacement WANGENSUM.XLS

36 WANAPUM POWERPLANT WATER UTILIZATION JULY 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 8,224, ,962 GENERATION 6,819, ,070 FISH FACILITIES 129,270 9,006 FISH SPILL 1,188,179 82,778 87,671 6,108

37 Wanapum Water Utilization Report July 2018 MONTHLY WATER USAGE FISH SPILL 14% 1% FISH FACILITIES 2% GENERATION 83% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 6% 19% FISH FACILITIES 1% GENERATION 74% GENERATION FISH FACILITIES FISH SPILL

38 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS July 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 744 Gross Generation (B) 422,072,900 Plant Use 1,490,000 Max. Hourly Generation (C) 737,200 Net Generation 420,582,900 Time of Max. Hourly Gen. 07/02/ Water for Generation (D) 6,662,690 A.F. Plant Factor 59.37% Water Bypassed (E) 1,274,300 A.F. Utilization Factor 77.15% Water for Fish (F) 79,980 A.F. Water Factor: 83.11% Average Hydraulic Head: 73.4 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 49, P P-02 Turbine Replacement P-3 49, P-4 52, P-5 51, P-6 48, P-7 46, P-8 54, SD-5C Cause of Initiation Unknown P-9 37, P-10 31, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

39 Plant Service Interruptions Plant: PRIEST RAPIDS July, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 07/01/ : :48 P OTH 11 P-02 Turbine Replacement 07/31/ :15 0:15 P OTH 12 65SD-5C Cause of Initiation Unknown Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 08/07/ :22:31 AM Page 1 of 1

40 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY JULY 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , P , (A) 4, P , , P , , P , , P , , P , , P , , (B) 5.70 P , , , P , , PROJECT TOTAL: ,074 3,202, , PLANT USE: 1,490 7,265 NET GENERATION: 420,584 3,194,950 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Turbine Generator Replacement (B) 65SD-5C Cause of Initiation Unknown PRGENSUM.XLS

41 PRIEST RAPIDS POWERPLANT WATER UTILIZATION JULY 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 8,016, ,865 GENERATION 6,662, ,073 FISH FACILITIES 79,980 5,067 FISH SPILL 1,142,129 72, ,171 8,373

42 PRIEST RAPIDS WATER UTILIZATION REPORT JULY 2018 MONTHLY WATER USAGE FISH SPILL 14% 2% FISH FACILITIES 1% GENERATION 83% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 22% FISH FACILITIES 0% GENERATION 73% GENERATION FISH FACILITIES FISH SPILL

43 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS August 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 744 Gross Generation (B) 395,255,200 Plant Use 724,500 Max. Hourly Generation (C) 942,900 Net Generation 394,530,700 Time of Max. Hourly Gen. 08/25/ Water for Generation (D) 5,703,880 A.F. Plant Factor 48.16% Water Bypassed (E) 698,640 A.F. Utilization Factor 85.49% Water for Fish (F) 129,270 A.F. Water Factor: 87.32% Average Hydraulic Head: 78.8 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 34, W-2 41, W-3 37, W-4 35, W-5 35, W-6 52, W-7 53, W Generator Replacement W-9 51, W-10 52, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

44 Plant Service Interruptions Plant: WANAPUM August, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 08/01/ : :14 W-8 W-832 MAN 11 Generator Replacement Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 09/04/ :14:13 AM Page 1 of 1

45 WANAPUM POWERPLANT GENERATION SUMMARY AUGUST 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , W , , W , , W , , W , , W , , W , , W (A) 5, W , , W , , PROJECT TOTAL: ,257 4,015, , PLANT USE: 725 5,582 NET GENERATION: 394,533 4,010,327 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Generator Replacement WANGENSUM.XLS

46 WANAPUM POWERPLANT WATER UTILIZATION AUGUST 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 6,531, ,626 GENERATION 5,703, ,255 FISH FACILITIES 129,270 8,958 FISH SPILL 645,631 44,740 53,009 3,673

47 Wanapum Water Utilization Report August 2018 MONTHLY WATER USAGE FISH SPILL 10% 1% FISH FACILITIES 2% GENERATION 87% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 6% 17% FISH FACILITIES 1% GENERATION 76% GENERATION FISH FACILITIES FISH SPILL

48 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS August 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 744 Gross Generation (B) 352,883,200 Plant Use 1,486,300 Max. Hourly Generation (C) 757,300 Net Generation 351,396,900 Time of Max. Hourly Gen. 08/25/ Water for Generation (D) 5,495,830 A.F. Plant Factor 49.63% Water Bypassed (E) 759,350 A.F. Utilization Factor 79.25% Water for Fish (F) 72,450 A.F. Water Factor: 86.85% Average Hydraulic Head: 75.7 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 51, P P-02 Turbine Replacement P-3 50, P-4 47, P-5 42, P-6 42, Replace transducer and brake pressure gauge P-7 37, P-8 31, SD GOV SUMP LOW P-9 27, Excessive swings of MWAR and MW P-10 22, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

49 Plant Service Interruptions Plant: PRIEST RAPIDS August, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 08/01/ : :48 P OTH 11 P-02 Turbine Replacement 08/06/ :20 4:20 P MAN 11 Replace transducer and brake pressure gauge 08/25/ :35 0:35 P OTH 14 65SD GOV SUMP LOW 08/28/ :33 0:33 P MAN 14 Excessive swings of MWAR and MW Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 09/04/ :14:05 AM Page 1 of 1

50 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY AUGUST 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , P , (A) 5, P , , P , , P , , P , , (B) P , , P , , (C) 6.28 P , , (D) 1, P , , PROJECT TOTAL: ,882 3,555, , PLANT USE: 1,486 8,751 NET GENERATION: 351,396 3,546,346 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Turbine Generator Replacement (B) Replace Transducer and Brake Pressure Gauge (C) 65SD Gov Sump Low (D) Excessive Swings of MWAR and MW PRGENSUM.XLS

51 PRIEST RAPIDS POWERPLANT WATER UTILIZATION AUGUST 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 6,327, ,292 GENERATION 5,495, ,883 FISH FACILITIES 72,450 4,652 FISH SPILL 713,251 45,797 46,099 2,960

52 PRIEST RAPIDS WATER UTILIZATION REPORT AUGUST 2018 MONTHLY WATER USAGE FISH SPILL 11% 1% FISH FACILITIES 1% GENERATION 87% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 20% FISH FACILITIES 1% GENERATION 74% GENERATION FISH FACILITIES FISH SPILL

53 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS September 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 720 Gross Generation (B) 282,081,200 Plant Use 630,000 Max. Hourly Generation (C) 831,300 Net Generation 281,451,200 Time of Max. Hourly Gen. 09/05/ Water for Generation (D) 3,995,250 A.F. Plant Factor 35.52% Water Bypassed (E) 70,670 A.F. Utilization Factor 75.37% Water for Fish (F) 125,100 A.F. Water Factor: 95.33% Average Hydraulic Head: 80.1 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 41, Black Start Black Start Excercise Transfprmer "A" Annual Maintenance W-2 5, Transfprmer "A" Annual Maintenance W-3 36, W-4 20, W-5 15, Transformer "C" Annual Maintenance W-6 47, Transformer "C" Annual Maintenance W-7 42, Transformer D Triennial Maintenance (Kagele, Schwint) W Generator Replacement W-9 35, Replace Governor Manifold Proportional Valve Transformer "E" Annual Maintenance W-10 36, Transformer "E" Annual Maintenance (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month

54 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS September 2018 Plant Factor = (B) * 100 (A) * Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

55 Plant Service Interruptions Plant: WANAPUM September, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 09/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 09/04/ :41 11:41 W-1 W-132 MAN 11 Transfprmer "A" Annual Maintenance 09/04/ :00 643:00 W-2 W-232 MAN 11 Transfprmer "A" Annual Maintenance 09/06/ :47 2:47 W-9 W-932 MAN 11 Replace Governor Manifold Proportional Valve 09/18/ :55 1:55 W-1 W-132 MAN 11 Black Start 09/19/ :45 9:45 W-5 W-532 MAN 11 Transformer "C" Annual Maintenance 09/19/ :47 10:47 W-6 W-632 MAN 11 Transformer "C" Annual Maintenance 09/20/ :52 9:52 W-9 W-932 MAN 11 Transformer "E" Annual Maintenance 09/20/ :52 9:52 W-10 W-1032 MAN 11 Transformer "E" Annual Maintenance 09/24/ :15 81:15 W-7 W-732 MAN 11 Transformer D Triennial Maintenance (Kagele, Schwint) 09/25/ :11 0:11 W-1 W-132 MAN 11 Black Start Excercise Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 10/01/ :23:36 AM Page 1 of 1

56 WANAPUM POWERPLANT GENERATION SUMMARY SEPTEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , (A, B) W , , (B) W , , W , , W , , (C) W , , (C) W , , (D) W (E) 6, W , , (F, G) W , , (G) PROJECT TOTAL: ,083 4,297,992 1, , PLANT USE: 630 6,212 NET GENERATION: 281,453 4,291,780 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Black Start (B) Transformer A Annual Maintenance (C) Transformer C Annual Maintenance (D) Transformer D Triennial Maintenance (E) Generator Replacement (F) Replace Governor Manifold Proportional Valve (G) Transformer E Maintenance WANGENSUM.XLS

57 WANAPUM POWERPLANT WATER UTILIZATION SEPTEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 4,191, ,903 GENERATION 3,995, ,081 FISH FACILITIES 125,100 8,833 FISH SPILL 70,670 4,

58 Wanapum Water Utilization Report September 2018 MONTHLY WATER USAGE FISH SPILL 2% 0% FISH FACILITIES 3% GENERATION 95% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 6% 16% FISH FACILITIES 1% GENERATION 77% GENERATION FISH FACILITIES FISH SPILL

59 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS September 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 720 Gross Generation (B) 263,786,900 Plant Use 1,424,700 Max. Hourly Generation (C) 696,300 Net Generation 262,362,200 Time of Max. Hourly Gen. 09/02/ Water for Generation (D) 3,888,430 A.F. Plant Factor 38.34% Water Bypassed (E) 89,330 A.F. Utilization Factor 72.87% Water for Fish (F) 41,700 A.F. Water Factor: 96.74% Average Hydraulic Head: 78.4 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 41, P-1181 OPEN for Transformer A outage unit unable to sync online P P-02 Turbine Replacement P-3 47, P-4 35, P-5 26, P-6 44, P-7 32, for Transformer D outage P-8 12, for Transformer D outage P-8 65SD suspected to be faulty, initiating a P- 8 5C shutdown. P-8 65SD suspected to be faulty. P-9 1, Voith to Repair Oil Leaks, Remove TGB and Machine TGB Flange Seat on IMHC, Repair Water Leaks to Wicket Gate Cartridge Seals, General Inspections and Maintenance. P-10 20, Black Start Exercise Black Start Exercize Scheduled Outage for Transformer E Annual Maintenance/ P-10 Slip Ring Maintenance

60 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS September 2018 (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Plant Factor = (B) * 100 (A) * Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

61 Plant Service Interruptions Plant: PRIEST RAPIDS September, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 09/01/ : :48 P OTH 11 P-02 Turbine Replacement 09/04/ :00 641:00 P MAN 11 Voith to Repair Oil Leaks, Remove TGB and Machine TGB Flange Seat on IMHC, Repair Water Leaks to Wicket Gate Cartridge Seals, General Inspections and Maintenance. 09/04/ :08 1:08 P MAN 11 Black Start Exercise 09/10/ :23 102:23 P MAN 11 P-1181 OPEN for Transformer A outage 09/11/ :52 1:52 P MAN 11 Black Start Exercize 09/14/ :44 0:44 P OTH 14 unit unable to sync online 09/17/ :29 84:29 P MAN 11 for Transformer D outage 09/17/ :29 84:29 P MAN 11 for Transformer D outage 09/24/ :30 161:30 P MAN 11 Scheduled Outage for Transformer E Annual Maintenance/ P-10 Slip Ring Maintenance 09/25/ :20 0:20 P OTH 10 P-8 65SD suspected to be faulty. 09/25/ :20 0:20 P OTH 10 P-8 65SD suspected to be faulty, initiating a P-8 5C shutdown. Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 10/01/ :11:02 AM Page 1 of 1

62 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY SEPTEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , (A) P , (B) 5, P , , P , , P , , P , , P , , (C) P , , (C, D) P , , (E) 1, P , , (F) PROJECT TOTAL: ,788 3,818,885 1, , PLANT USE: 1,425 10,176 NET GENERATION: 262,363 3,808,709 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Transformer A Outage (B) Turbine Generator Replacement (C) Transformer D Outage (D) 65SD Suspected to be Faulty (E) Voith Repair and General Inspections and Maintenance (F) Black Start Exercise and Transformer E Annual Maintenance RRGENSUM.XLS

63 PRIEST RAPIDS POWERPLANT WATER UTILIZATION SEPTEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 4,019, ,676 GENERATION 3,888, ,787 FISH FACILITIES 41,700 2,829 FISH SPILL 89,083 6,

64 PRIEST RAPIDS WATER UTILIZATION REPORT SEPTEMBER 2018 MONTHLY WATER USAGE FISH SPILL 2% 0% FISH FACILITIES 1% GENERATION 97% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 19% FISH FACILITIES 1% GENERATION 75% GENERATION FISH FACILITIES FISH SPILL

65 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS October 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 744 Gross Generation (B) 284,187,300 Plant Use 604,300 Max. Hourly Generation (C) 808,800 Net Generation 283,583,000 Time of Max. Hourly Gen. 10/09/ Water for Generation (D) 4,104,320 A.F. Plant Factor 34.63% Water Bypassed (E) 67,440 A.F. Utilization Factor 73.33% Water for Fish (F) 129,270 A.F. Water Factor: 95.43% Average Hydraulic Head: 78.4 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 44, SLip Ring Maintenance Transformer A and B Disconnect Maintenance W ,000 Hour Inspection W-3 34, Slip Ring Maintenance (Gehling) Transformer A and B Disconnect Maintenance W-4 21, Slip Ring Maintenance (Gehling) W-5 16, Electrical Maintenance (Gehling) W-6 50, Servo lock motor replacement W-7 44, Reinstalling W-8 Flex Links at Transformer "D" (Couture) Instrumentation Sync for W-8 (Gehling) W Generator Replacement W-9 31, Warranty Inspection (Couture) W-10 40, Slip Ring Maintenance / Warranty Inspection (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month

66 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS October 2018 Plant Factor = (B) * 100 (A) * Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

67 Plant Service Interruptions Plant: WANAPUM October, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 10/01/ : :00 W-2 W-232 MAN 11 30,000 Hour Inspection 10/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 10/01/ :26 30:26 W-1 W-132 MAN 11 SLip Ring Maintenance 10/03/ :05 10:05 W-3 W-332 MAN 11 Slip Ring Maintenance (Gehling) 10/03/ :45 33:45 W-4 W-432 MAN 11 Slip Ring Maintenance (Gehling) 10/04/ :48 9:48 W-3 W-332 MAN 11 Transformer A and B Disconnect Maintenance 10/04/ :48 9:48 W-1 W-132 MAN 11 Transformer A and B Disconnect Maintenance 10/08/ :39 7:39 W-6 W-632 MAN 11 Servo lock motor replacement 10/15/ :27 57:27 W-10 W-1032 MAN 11 Slip Ring Maintenance / Warranty Inspection 10/22/ :43 53:43 W-9 W-932 MAN 11 Warranty Inspection (Couture) 10/23/ :59 5:59 W-7 W-732 MAN 11. Reinstalling W-8 Flex Links at Transformer "D" (Couture) 10/30/ :43 8:43 W-5 W-532 MAN 11 Electrical Maintenance (Gehling) 10/31/ :50 2:50 W-7 W-732 MAN 11 Instrumentation Sync for W-8 (Gehling) Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 11/15/ :50:30 AM Page 1 of 1

68 WANAPUM POWERPLANT GENERATION SUMMARY OCTOBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , (A, B) W , (C) 1, W , , (A, B) W , , (A) W , , (D) W , , (E) W , , (F) W (G) 7, W , , (H) W , , (A, H) PROJECT TOTAL: ,188 4,582,180 1, , PLANT USE: 604 6,816 NET GENERATION: 283,584 4,575,364 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (H) Warranty Inspection (A) Slip Ring Maintenance (B) Transformer A and B Disconnect Maintenance (C) 30,000 Hour Inspection (D) Electrical Maintenance (E) Servo Lock Motor Replacement (F) Reinstalling W08 Flex Links at Transformer D and Intrumentation Sync (G) Generator Replacement WANGENSUM.XLS

69 WANAPUM POWERPLANT WATER UTILIZATION OCTOBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 4,301, ,808 GENERATION 4,104, ,187 FISH FACILITIES 129,270 8,951 FISH SPILL 54,058 3,743 13,

70 Wanapum Water Utilization Report October 2018 MONTHLY WATER USAGE FISH SPILL 1% 0% FISH FACILITIES 3% GENERATION 96% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 6% 15% FISH FACILITIES 1% GENERATION 78% GENERATION FISH FACILITIES FISH SPILL

71 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS October 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 744 Gross Generation (B) 274,674,800 Plant Use 1,332,100 Max. Hourly Generation (C) 723,200 Net Generation 273,342,700 Time of Max. Hourly Gen. 10/30/ Water for Generation (D) 3,942,590 A.F. Plant Factor 38.63% Water Bypassed (E) 143,250 A.F. Utilization Factor 75.68% Water for Fish (F) 43,090 A.F. Water Factor: 95.49% Average Hydraulic Head: 79.8 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 50, P P-02 Turbine Replacement P-3 44, Annual Transformer B Maint. Water found in P-3 thrust bearing. Unit unavailable until leak in cooling water piping found and repaired. Dispatch informed (Gehling) P-4 45, Annual Transformer B Maint. P-5 39, Sub 2 outage Transformer B annual maint Transformer C Trienial P-6 10, Transformer C Trienial and P-6 Overhaul P-7 39, sub 2 outage P-8 13, Unit 95% Speed Switch will not complete the permissive checks for unit operation. Rotor Measurements for TG group sub 2 outage P-9 13, P-10 Curve Testing Xfmr E outage Voith to Repair Oil Leaks, Remove TGB and Machine TGB Flange Seat on IMHC, Repair Water Leaks to Wicket Gate Cartridge Seals, General Inspections and Maintenance. P-10 17, Replace GCB Actuator pump due to excessive run time. Scheduled Outage for Transformer E Annual Maintenance/ P-10 Slip Ring Maintenance

72 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS October 2018 Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

73 Plant Service Interruptions Plant: PRIEST RAPIDS October, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 10/01/ : :48 P OTH 11 P-02 Turbine Replacement 10/01/ :58 868:58 P MAN 11 Voith to Repair Oil Leaks, Remove TGB and Machine TGB Flange Seat on IMHC, Repair Water Leaks to Wicket Gate Cartridge Seals, General Inspections and Maintenance. 10/01/ :24 248:54 P MAN 11 Scheduled Outage for Transformer E Annual Maintenance/ P-10 Slip Ring Maintenance 10/01/ :15 8:15 P MAN 11 Rotor Measurements for TG group 10/01/ :50 15:50 P MAN 14 Unit 95% Speed Switch will not complete the permissive checks for unit operation. 10/06/ :11 33:11 P MAN 14 Water found in P-3 thrust bearing. Unit unavailable until leak in cooling water piping found and repaired. Dispatch informed (Gehling) 10/08/ :42 80:42 P MAN 11 Transformer C Trienial 10/08/ :53 568:53 P MAN 11 Transformer C Trienial and P-6 Overhaul 10/18/ :53 10:53 P MAN 11 sub 2 outage 10/18/ :53 10:53 P MAN 11 Sub 2 outage 10/18/ :54 10:54 P MAN 11 sub 2 outage 10/22/ :10 9:10 P MAN 11 Annual Transformer B Maint. 10/22/ :41 33:41 P MAN 11 Annual Transformer B Maint. 10/22/ :30 24:30 P MAN 11 Transformer B annual maint 10/25/ :13 29:13 P MAN 6 Replace GCB Actuator pump due to excessive run time. 10/26/ :03 10:03 P MAN 11 P-10 Curve Testing Xfmr E outage Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 11/01/ :17:57 PM Page 1 of 2

74 Plant Service Interruptions Plant: PRIEST RAPIDS October, 2018 Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 11/01/ :17:57 PM Page 2 of 2

75 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY OCTOBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , P , (A) 6, P , , (B, C) P , , (B) P , , (D, E) P , , (E, F) P , , (D) P , , (G) P , , (H, I) 2, P , , (H, J) PROJECT TOTAL: ,674 4,093,559 1, , PLANT USE: 1,332 11,508 NET GENERATION: 273,342 4,082,051 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Turbine Generator Replacement (B) Annual Tranformer B Maintenance (C) Water in Thrust Bearing (D) Substation 2 Outage (E) Transformer C Trienial (F) Overhaul (G) Speed Switch and Rotor measurements (H) Transformer E Outage (I) Voith Repair and General Inspections and Maintenance (J) Replace GCB Accuator Pump and Slip Ring Maintenance PRGENSUM.XLS

76 PRIEST RAPIDS POWERPLANT WATER UTILIZATION OCTOBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 4,128, ,657 GENERATION 3,942, ,675 FISH FACILITIES 43,090 3,002 FISH SPILL 132,687 9,244 10,

77 PRIEST RAPIDS WATER UTILIZATION REPORT OCTOBER 2018 MONTHLY WATER USAGE FISH SPILL 3% 0% FISH FACILITIES 1% GENERATION 96% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 18% FISH FACILITIES 1% GENERATION 76% GENERATION FISH FACILITIES FISH SPILL

78 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS November 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 721 Gross Generation (B) 399,020,600 Plant Use 659,900 Max. Hourly Generation (C) 851,700 Net Generation 398,360,700 Time of Max. Hourly Gen. 11/28/ Water for Generation (D) 5,751,360 A.F. Plant Factor 50.17% Water Bypassed (E) 176,090 A.F. Utilization Factor 77.22% Water for Fish (F) 103,440 A.F. Water Factor: 95.37% Average Hydraulic Head: 79.0 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 53, To Close W-235 To OPEN W-235 Disconnect W ,000 Hour Inspection W-3 51, W-4 40, Replacing Gate Limit Switch (Gehling) W-5 37, W-6 55, W-7 52, W-8 2, Generator Replacement W-9 55, W-10 51, Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

79 Plant Service Interruptions Plant: WANAPUM November, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 11/01/ : :00 W-2 W-232 MAN 11 30,000 Hour Inspection 11/01/ : :14 W-8 W-832 MAN 11 Generator Replacement 11/05/ :06 0:06 W-1 W-132 MAN 11 To OPEN W-235 Disconnect 11/08/ :32 0:32 W-4 W-432 MAN 11 Replacing Gate Limit Switch (Gehling) 11/08/ :01 0:01 W-1 W-132 MAN 11 To Close W-235 Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 12/03/ :49:34 AM Page 1 of 1

80 WANAPUM POWERPLANT GENERATION SUMMARY NOVEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , (A) W , (B) 2, W , , W , , (C) W , , W , , W , , W ,423 2, (D) 8, W , , W , , PROJECT TOTAL: ,021 4,981,201 1, , PLANT USE: 660 7,476 NET GENERATION: 398,361 4,973,725 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) Close W-235 and Open W-235 Disconnect (B) 30,000 Hour Inspection (C) Replacing Gate Limit Switch (D) Generator Replacement WANGENSUM.XLS

81 WANAPUM POWERPLANT WATER UTILIZATION NOVEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 6,030, ,414 GENERATION 5,751, ,021 FISH FACILITIES 103,440 7,177 FISH SPILL 46,827 3, ,263 8,968

82 Wanapum Water Utilization Report November 2018 MONTHLY WATER USAGE FISH SPILL 1% 2% FISH FACILITIES 2% GENERATION 95% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 15% FISH FACILITIES 1% GENERATION 79% GENERATION FISH FACILITIES FISH SPILL

83 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS November 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 721 Gross Generation (B) 333,993,100 Plant Use 1,340,800 Max. Hourly Generation (C) 725,100 Net Generation 332,652,300 Time of Max. Hourly Gen. 11/19/ Water for Generation (D) 5,050,350 A.F. Plant Factor 48.48% Water Bypassed (E) 755,720 A.F. Utilization Factor 75.88% Water for Fish (F) 38,610 A.F. Water Factor: 86.41% Average Hydraulic Head: 77.1 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 50, Governor, Replace Ballhead Pilot Valve Assembly P P-02 Turbine Replacement P-3 52, P-4 50, Replace Dashpot Bypass Solenoid P-5 50, P Transformer C Trienial and P-6 Overhaul P-7 49, P-8 24, Governor, Dashpot Solenoid Not Engaged. Notified Dispatch (B. Johnson) P-9 26, Slip Ring Maintenance, adjust slip ring brush holder. P-10 29, Taken to Unavaliable in Order to Remove P-9, P-931 Blade Side Grounds. (C. Kiehn) Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

84 Plant Service Interruptions Plant: PRIEST RAPIDS November, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 11/01/ : :48 P OTH 11 P-02 Turbine Replacement 11/01/ : :53 P MAN 11 Transformer C Trienial and P-6 Overhaul 11/06/ :59 6:59 P OTH 11 Slip Ring Maintenance, adjust slip ring brush holder. 11/06/ :35 0:35 P MAN 14 Taken to Unavaliable in Order to Remove P-9, P-931 Blade Side Grounds. (C. Kiehn) 11/08/ :37 10:37 P MAN 11 Governor, Replace Ballhead Pilot Valve Assembly 11/14/ :11 6:11 P MAN 11 Governor, Dashpot Solenoid Not Engaged. Notified Dispatch (B. Johnson) 11/27/ :10 7:10 P MAN 11 Replace Dashpot Bypass Solenoid Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 12/04/ :22:54 AM Page 1 of 1

85 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY NOVEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , (A) P , (B) 7, P , , P , , (C) P , , P , (D) 1, P , , P , , (E) P , , (F) 2, P , , (G) PROJECT TOTAL: ,994 4,427,553 1, , PLANT USE: 1,341 12,849 NET GENERATION: 332,653 4,414,705 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Governor (B) Turbine Generator Replacement (C) Replace Dashpot Bypass Solenoid (D) Transformer C Trienial and Overhaul (E) Governor and Dashpot Solenoid (F) Slip Ring Maintenance (G) Taken to Unavailable in Order to Remove P-9 and P-931 Blade Side Grounds PRGENSUM.XLS

86 PRIEST RAPIDS POWERPLANT WATER UTILIZATION NOVEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 5,844, ,524 GENERATION 5,050, ,993 FISH FACILITIES 38,610 2,553 FISH SPILL 58,397 3, ,323 46,116

87 PRIEST RAPIDS WATER UTILIZATION REPORT NOVEMBER 2018 MONTHLY WATER USAGE FISH SPILL 1% 12% FISH FACILITIES 1% GENERATION 86% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 17% FISH FACILITIES 1% GENERATION 77% GENERATION FISH FACILITIES FISH SPILL

88 Wanapum Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS December 2018 Installed Capacity (A) 1,103,000 kw Hours Plant Operated: 744 Gross Generation (B) 386,021,000 Plant Use 744,300 Max. Hourly Generation (C) 909,500 Net Generation 385,276,700 Time of Max. Hourly Gen. 12/27/ Water for Generation (D) 5,673,150 A.F. Plant Factor 47.04% Water Bypassed (E) 108,100 A.F. Utilization Factor 82.46% Water for Fish (F) 43,090 A.F. Water Factor: 97.40% Average Hydraulic Head: 77.3 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance W-1 46, W-2 32, ,000 Hour Inspection W-3 41, W-4 38, W-5 28, W-6 53, W-7 18, Generator Rotor Replacement and Unit Governor Replacement Investigating cause of trip W-8 36, Generator Replacement W-9 44, W-10 45, Transformer D W-7 Flex Link Removal Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

89 Plant Service Interruptions Plant: WANAPUM December, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 12/01/ : :28 W-2 W-232 MAN 11 30,000 Hour Inspection 12/01/ : :39 W-8 W-832 MAN 11 Generator Replacement 12/07/ :52 13:52 W-7 W-732 OTH 12 Investigating cause of trip 12/11/ :49 496:49 W-7 W-732 MAN 11 Generator Rotor Replacement and Unit Governor Replacement 12/11/ :33 7:33 W-8 W-832 MAN 11 Transformer D W-7 Flex Link Removal Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 01/02/ :04:10 AM Page 1 of 1

90 WANAPUM POWERPLANT GENERATION SUMMARY DECEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD W , , W , , (A) 2, W , , W , , W , , W , , W , , (B) W ,825 39, (C) 8, W , , W , , PROJECT TOTAL: ,022 5,367, , PLANT USE: 744 8,220 NET GENERATION: 385,278 5,359,003 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 996,910 (A) 30,000 Hour Inspection (B) Generator Rotor and Governor Replacement also Investigating Trip. (C) Generator Replacement and Transformer D W07 Flex Link Removal. WANGENSUM.XLS

91 WANAPUM POWERPLANT WATER UTILIZATION DECEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 5,824, ,308 GENERATION 5,673, ,021 FISH FACILITIES 43,090 2,932 FISH SPILL ,100 7,356

92 Wanapum Water Utilization Report December 2018 MONTHLY WATER USAGE FISH SPILL 0% 2% FISH FACILITIES 1% GENERATION 97% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 14% FISH FACILITIES 1% GENERATION 80% GENERATION FISH FACILITIES FISH SPILL

93 Priest Rapids Public Utility District of Grant County, Ephrata, Washington MONTHLY REPORT OF POWER OPERATIONS December 2018 Installed Capacity (A) 955,600 kw Hours Plant Operated: 744 Gross Generation (B) 378,588,400 Plant Use 1,453,000 Max. Hourly Generation (C) 807,400 Net Generation 377,135,400 Time of Max. Hourly Gen. 12/27/ Water for Generation (D) 5,641,000 A.F. Plant Factor 53.25% Water Bypassed (E) 60,380 A.F. Utilization Factor 84.49% Water for Fish (F) 14,630 A.F. Water Factor: 98.69% Average Hydraulic Head: 78.1 Feet UNIT SERVICE RECORD Unit No Monthly Gen. (mwh) Hrs. Operation Hrs Down For Maint. Availability Factor (G) Nature of Maintenance P-1 50, P P-02 Turbine Replacement P-3 50, Electrical Maintenance On Slip Ring Brushes P-4 52, Calibrate Speed Adjust P-5 38, Replace Shaft Seal Packing P-6 35, GCB Trouble - Pump Excess Run Alarm In Transformer C Trienial and P-6 Overhaul P-7 47, P-8 34, Electrical Maintenance On Slip Ring Brushes P-9 28, P-10 40, Calibrate Speed Adjust Plant Factor = (B) * 100 (A) * Hours in Month (G) Availability Factor= Hours in Month - Hours Down for Maint. Hours in Month Utiization Factor = (C) * 100 (A) Water Factor = (D) * 100 (D) + (E) + (F)

94 Plant Service Interruptions Plant: PRIEST RAPIDS December, 2018 Duration Circuit Breaker Relays Operated Date Time Month Total Unit Tripped Type Cause Remarks 12/01/ : :48 P OTH 11 P-02 Turbine Replacement 12/01/ : :39 P MAN 11 Transformer C Trienial and P-6 Overhaul 12/12/ :00 18:00 P MAN 6 GCB Trouble - Pump Excess Run Alarm In 12/17/ :26 25:26 P MAN 11 Replace Shaft Seal Packing 12/18/ :54 9:54 P MAN 11 Calibrate Speed Adjust 12/19/ :51 13:51 P MAN 11 Calibrate Speed Adjust 12/27/ :12 2:12 P MAN 11 Electrical Maintenance On Slip Ring Brushes 12/27/ :03 2:03 P MAN 11 Electrical Maintenance On Slip Ring Brushes Relay Types: Causes: MAN - Manual OC - Overcurrent DIFF - Differential FREQ - Frequency GRD - Ground V - Voltage THER - Thermal TRIP - 86E Trip OTH - Other 1 Lightning 2 All other weather 3 Trees, etc. into line 4 Malicious damage 5 Line down 6 Defective equipment 7 Inadequate system 8 Trouble on another system 9 Operation error 10 Relay error 12 Cause unknown 11 Prearranged outage 13 Computer control 14 Other 01/03/ :27:32 PM Page 1 of 1

95 PRIEST RAPIDS POWERPLANT GENERATION SUMMARY DECEMBER 2018 GENERATION (MWH) MAINTENANCE HOURS 100% RATED UNIT INSTALLED CAPACITY CURRENT YTD CURRENT YTD P , , P , (A) 8, P , , (B) P , , (C) P , , (D) P , , (E) 1, P , , P , , (B) P , , , P , , (C) PROJECT TOTAL: ,590 4,806, , PLANT USE: 1,453 14,302 NET GENERATION: 377,137 4,791,842 PLANT RATING CURVE CAPACITY BASED ON 40 YR WATER 912,300 (A) Turbine Generator Replacement (B) Electrical Maintenance on Slip Ring Brushes (C) Calibrate Speed Adjust (D) Replace Shaft Seal Packing (E) GCB Trouble, Pump Excess Run Alarm In, Transformer C Trienial, and P06 Overhaul PRGENSUM.XLS

96 PRIEST RAPIDS POWERPLANT WATER UTILIZATION DECEMBER 2018 WATER UTILIZED (ACRE FEET) EQUIVALENT ENERGY (MWH) TOTAL RIVER FLOW 5,716, ,623 GENERATION 5,641, ,588 FISH FACILITIES 14, FISH SPILL ,380 4,052

97 PRIEST RAPIDS WATER UTILIZATION REPORT DECEMBER 2018 MONTHLY WATER USAGE FISH SPILL 0% 1% FISH FACILITIES 0% GENERATION 99% GENERATION FISH FACILITIES FISH SPILL YEAR TO DATE WATER USAGE FISH SPILL 5% 16% FISH FACILITIES 1% GENERATION 78% GENERATION FISH FACILITIES FISH SPILL