APS/SRP Stakeholder Meeting For Transmission Planning FERC Order 890 SRP Attachment K APS Attachment E

Transcription

1 APS/SRP Stakeholder Meeting For Transmission Planning FERC Order 890 SRP Attachment K APS Attachment E SRP Facility Scottsdale, AZ December 18 th, :00 11:00 A.M.

2 Agenda 1. Welcome, Introductions, and Stakeholder Meeting Overview 2. Status of Action Items June 12, 2014 Joint APS/SRP 2 nd Quarter Public Planning Meeting 3. Purpose of Today s Meeting SRP Planning 4. Purpose of Today s Meeting APS Planning 5. 8 th BTA Recommendations Jason Spitzkoff (APS) 6. Stakeholder Questions/Comments 7. Action Items Review 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 2

3 2. Status of Action Items There were no Action Items from the Joint APS/SRP 2 nd Quarter Public Planning Meeting held on 6/12/ /18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 3

4 3. Purpose of Today s Meeting Per SRP s OATT, SRP conducts the 4 th quarter public planning meeting to: Review its current transmission study plan Present a draft of its Ten Year Transmission Plan for the following calendar year for stakeholder review and comments Review economic planning study request submitted by October 31 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 4

5 3.A. SRP s Study Plan SRP has two distinct, but related, transmission study plans NERC Compliance SRP s budgetary planning The difference between the two plans: NERC Compliance: 3 seasons/scenarios, 2 discrete years (near and long term) SRP s annual planning: 1 season, 10 consecutive years (first 6 years are for budget, remaining 4 for compliance purposes) The similarities between the two plans: Similar load forecasts, demand response They are reliability studies 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 5

6 3.A NERC Compliance Study Methodology Coordinated Base Cases (Seed Cases) 2014 AZ coordinated case used to build AZ coordinated case used to build AZ coordinated case used The intermediate cases are APS/SRP coordinated SRP NERC Compliance cases 2016 and kV transmission models incorporated Most up-to-date forecasts for peak summer loads 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 6

7 3.A NERC Compliance Study Methodology NERC Compliance Studies Cases 2016 & 2020 Summer Peak & Off-peak Cases 2016 & 2020 Off-peak Cases are Low Load (winter conditions) and High Import (shoulder cases with low generation in the Phoenix Metro Area) Following analyses are conducted: Thermal analysis Post-Transient Transient Stability 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 7

8 3.A. NERC Compliance Studies NERC STANDARD Type of Studies Completed TPL-001 (N-0) Thermal Transient Stability Post-transient 2016 Peak X 2016 Low Load X 2016 High Import X 2020 Peak X 2020 Low Load X 2020 High Import X TPL-002 (N-1) Thermal Transient Stability Post-transient 2016 Peak X X X 2016 Low Load X X X 2016 High Import X X X 2020 Peak X X X 2020 Low Load X X X 2020 High Import X X X 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 8

9 3.A. NERC Compliance Studies NERC STANDARD Type of Studies Completed TPL-003 (N-2) Thermal Transient Stability Post-transient 2016 Bus outages X X X 2016 Contingency of towers X X X 2016 Stuck breaker & protection system failure (SLG fault) X X X 2016 Common Corridor X X X 2016 N-1-1 X X X 2020 Bus outages X X X 2020 Contingency of towers X X X 2020 Stuck breaker & protection system failure (SLG fault) X X X 2020 Common Corridor X X X 2020 N-1-1 X X X TPL-004 (N-X) Thermal Transient Stability Post-transient 2016 Substations with generation X X 2016 Common Corridor/Substation without generation X X 2016 Stuck breaker & protection system failure (3PHG fault) X X Note: TPL-003 Studies performed on Peak, Low Load & High Import cases 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 9

10 3.A. NERC Compliance Results 2014 Results 2014 NERC Compliance Studies were finalized by beginning of November of /18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 10

11 3.A. Customer Load/Resource Updates No customers provided load/resource data in September 2014 SRP received no stakeholder proposals in 2014 or prior to this meeting. If you like to provide information for the future SRP planning cycles, please see critical dates on the next slide 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 11

12 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 12

13 3.B. SRP Ten Year Plan Draft - Still subject to change until January 31 st filing 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 13

14 3.B Ten Year Plan Methodology Coordinated Base Cases See NERC Compliance Methodology slide #6 69kV transmission models incorporated Most up-to-date forecasts for peak summer loads TPL-001 & TPL-002 Studies Conducted for all ten years 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 14

15 NAVAJO GS MOENKOPI (APS) 500kV System MARKETPLACE McCULLOUGH ELDORADO NEVADA 230kV MEAD CEDAR MT (APS) YAVAPAI (APS) MORGAN (APS) DUGAS (APS) CHOLLA (APS) PERKINS SUGARLOAF MOHAVE PALO VERDE HASSAYAMPA PINAL WEST RUDD JOJOBA WESTWING KYRENE BROWNING DUKE PINNACLE PEAK (APS) SILVER KING CORONADO 345kV SPRINGERVILLE (TEP) PINAL CENTRAL SUNZIA (SWPG) Central New Mexico 2018 EXISTING 500kV SUBSTATION EXISTING LINES FUTURE 500kV SUBSTATION FUTURE LINES All Changes since January 2014 Ten Year Plan shown in red 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 15

16 WESTWING W.A.P.A. TO W.A.P.A. PINNACLE PEAK SRP PINNACLE PEAK TO APS PINNACLE PEAK 230kV System DEER VALLEY (APS) W.A.P.A. LIBERTY (W.A.P.A.) RUDD AGUA FRIA WHITE TANKS ORME ALEXANDER PAPAGO BRANDOW TO APS OCOTILLO CORBELL WARD W.A.P.A. THUNDERSTONE ROGERS 2015 SANTAN BROWNING GOLDFIELD To Silver King DOUBLE CIRCUIT, PHASE TIED LINE ANDERSON KNOX KYRENE TBD RS-27 (TBD) EXISTING 230kV CIRCUIT FUTURE 230kV CIRCUIT EXISTING 230kV SUBSTATIONS FUTURE 230kV SUBSTATIONS RS-28 (2017) Price Road Corridor Project 2017 SCHRADER PFISTER TBD ABEL DINOSAUR GENERATING STATION TO SANTA ROSA (APS) DESERT BASIN RANDOLPH TO CASA GRANDE (APS) PINAL CENTRAL All Changes since January 2014 Ten Year Plan shown in red 16 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning

17 All Changes since January 2014 Ten Year Plan shown in red 17 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning STEWART MOUNTAIN MORMON FLAT HORSE MESA ROOSEVELT Eastern Mining Area TO THUNDERSTONE GOLDFIELD 230kV FUTURE SUBSTATION 115kV CARREL SPURLOCK SUPERIOR SILVER KING 230 RS kV (2019) RAY TO SILVER KING 500kV PINTO VALLEY CARLOTA 230kV (2019) TRASK 2019 OAK FLAT KNOLL MIAMI RS KV (2019) MORRIS ELLISON PINAL KEARNY FRAZIER MOONSHINE EXISTING SUBSTATION GENERATING STATION BONNEYBROOK (APS) HAYDEN FUTURE LINE ASARCO EXISTING LINE TRANSFORMER COOLIDGE (W.A.P.A.) TO APACHE (AEPCO)

18 3.B. SRP changes since 2014 Plan Completed Projects Pinal West Duke Pinal Central 500kV line Pinal Central Browning 500kV line Pinal Central Randolph 230kV line Desert Basin Pinal Central 230kV line Pinal Central 500kV and 230kV Substation Duke 500kV Substation New Projects Browning-Rogers 230kV line in 2015 Browning-Corbell 230kV line in 2020 Delayed Projects Santan-Rogers 230kV line was 2016, now 2020 Schrader-RS28 230kV line was 2016, now 2017 RS28 230kV substation was 2016, now /18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 18

19 3.B. SRP changes since 2014 Plan Delayed Projects Superior-Silver King 115kV re-route was 2015, now 2017 Eastern Mining Expansion was 2018, now 2019 Sun Zia was 2017, now 2018 Silver King-RS29 230kV was 2018, now 2019 RS29 230kV substation was 2018, now 2019 RS29-RS30 115kV was 2018, now 2019 RS30 115kV substation was 2018, now 2019 Ellsworth Technology Corridor was 2018, now TBD New Superior-New Oak Flat 230kV was 2019, now TBD New Oak Flat-Silver King 230kV was 2019, now TBD Removed Projects Kyrene East Knox #2 230kV line 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 19

20 3.C. 3.E. Transmission Planning Study Process SRP evaluates plan submittals or alternatives according to the following flowchart. Exhibit 1 SRP Attachment K Transmission Planning Process Economic What Type of Study? 1 Reliability Regional Transmission Provider Evaluation High priority Local 2 Transmission Provider Economic Study Not high priority Does Transmission Provider s system meet NERC/WECC criteria? No Transmission Provider determines facilities needed with Stakeholder input Study results documented in a report and reviewed by Customer and Transmission Provider Yes TEPPC evaluates with Stakeholder input Customer Choice of Study at Customer s expense Does Transmission Provider s system meet local reliability criteria? No Transmission Provider determines facilities needed with Stakeholder input TEPPC determines high priority, performs study TEPPC determines not high priority Yes Transmission Provider coordinates with Sub- Regional Planning Group 1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures. 2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List. TEPPC will evaluate only those requests that have regional impacts. 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 20

21 3.C.-E. SRP Planning - Study Requests Generation Interconnection Requests Transmission Interconnection Requests Transmission Service Requests Economic Study Requests 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 21

22 3.C. SRP Planning Interconnection Requests (Transmission) Currently there are no Transmission Interconnection Requests under study 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 22

23 3.C. Interconnection Requests (Generation) A. EAST VALLEY 1- Solar Project 50MW 1- Natural Gas Project 12MW B. EMA 115kV AREA 3- Solar Projects 145MW A B Generation Interconnection Requests listed on this slide are for SRP solely owned transmission 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 23

24 3.D.-E. SRP - Transmission Service and Economic Study Requests Currently there are no Transmission Service or Economic Study Requests 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 24

25 3.F. Submittal of Additional Study Plan Proposals If you have study ideas for SRP to consider, please send a detailed message to: SRP.TransmissionPlanning@srpnet.com Please include (at a minimum): Your Name/Company/contact info ( /phone #) What the purpose of the study request is? And how will the results be used? What year(s) and season(s) is of interest? What type of study reliability (power flow only?), economic? 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 25

26 3.G. SRP Planning Comments & Questions Stakeholder comments/questions on 2014 Study Results 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 26

27 4. Purpose of Today s meeting Per APS s OATT, APS conducts the 4 th quarter public planning meeting to Review its current transmission study plan Provide an opportunity for stakeholder input on any aspect of the study plan Review stakeholder proposals previously submitted to APS for study plan alternatives Review its draft of the current Ten Year Transmission Plan 27

28 4.A. APS s Study Plan APS has two distinct, but related, transmission study processes NERC Compliance APS s Annual Planning The difference between the two plans: NERC Compliance: 2 seasons, 2 discrete years (near and long term); summer cases examine Category C & D APS s annual planning: 1 season, 10 consecutive years; Category A, B, & C Annual plan is used as starting point for NERC Compliance The similarities between the two plans: Similar load forecasts, demand response They are reliability studies 28

29 4.A NERC Compliance Study Methodology NERC Compliance Study Cases 2019 & 2024 Summer Peak Cases Off-peak Cases are Low Load and High Import (shoulder cases with low generation in the Phoenix Metro Area) One case in the near-term (2015 Winter) and one case in the long-term (2020 Winter) Following analyses are conducted: Thermal analysis Post-Transient Transient Stability 29

30 4.A NERC Compliance Studies Peak Load Assessment Summer NERC STANDARD STUDIES PERFORMED TPL -001(n-0) Thermal Transient Stability Post Transient 2019 SIL X 2019 PEAK X 2019 MLSC X 2024 SIL X 2024 PEAK X 2024 MLSC X TPL-002 (n-1) 2019 SIL (Lines, xfmrs, gens) X X 2019 PEAK (Lines, xfmrs, gens) X X X 2019 MLSC (Lines, xfmrs, gens) X X 2024 SIL (Lines, xfmrs, gens) X X 2024 PEAK (Lines, xfmrs, gens) X X X 2024 MLSC (Lines, xfmrs, gens) X X TPL-003 (n-2) 2019 Stuck Breaker/Breaker Failure X X X 2019 N-1-1 X X X 2019 Bus Section X X X 2024 Stuck Breaker/Breaker Failure X X X 2024 N-1-1 X X X 2024 Bus Section X X X TPL-004 (n-xx) 2019 Major Substations With/Without Generation X X X 2019 Stuck Breaker/Breaker Failure X X X 2019 Common Corridor X X X 2024 Major Substations With/Without Generation X X X 2024 Stuck Breaker/Breaker Failure X X X 2024 Common Corridor X X X 30

31 4.A NERC Compliance Studies NERC STANDARD Low Load Assessment STUDIES PERFORMED TPL -001(n-0) Thermal Transient Stability Post Transient 2015 Low Load X 2020 Low Load X TPL-002 (n-1) 2015 Transmission Line X X X 2015 Xfmr X X X 2015 Generation X X X 2015 Reactors X X 2020 Transmission Line X X X 2020 Xfmr X X X 2020 Generation X X X 2020 Reactors X X TPL-003 (n-2) 2015 Stuck Breaker X X X 2015 N-1-1 X X X 2020 Stuck Breaker X X X 2020 N-1-1 X X X TPL-004 (n-xx) 2015 Loss of All Generation Units at a Station X X X 2015 Common Corridor X X X 2020 Loss of All Generation Units at a Station X X X 2020 Common Corridor X X X 31

32 4.A. NERC Compliance Results? 2014 Results All summer studies completed Low load studies to be completed this week 32

33 4.A Ten Year Plan Methodology Coordinated Base Cases See SRP NERC Compliance Study Methodology slide #6 69kV transmission models incorporated Most up-to-date forecasts for peak summer loads TPL-001 & TPL-002 Studies conducted for all ten years 33

34 4.A Ten Year Plan Status Ten Year Plan study is nearing completion Draft results presented today are still subject to change Ten Year Plan filed by the end of January 34

35 4.B. Customer Load/Resource Updates APS has all load/resource data from Network Customers and incorporated into base cases Should you like to provide information for the future APS planning cycles, please see critical dates on the next slide under Stakeholder input column 35

36 Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Planning Calendar for Ten-Year Planning Cycle APS Transmission Planning 10 Yr Plan 10yr Plan Filed with ACC by Jan. 31 APS Corporate Load Forecast Develop 10yr base cases from AZ seed cases 10yr Plan study effort Determination of projects, timings, and scope APS Corporate Load Forecast Post Summer 10yr Plan New load forecast sensitivity Stakeholder Input 10yr. Plans filed by others Arizona Utilities coordinated seed case development 2 nd Quarter Stakeholder Meeting Stakeholder input on studies, request study alternatives, updates on current projects Sep. 1 st Network Transmission Customers and all other Transmission Customers Load & Resource Forecast Oct. 31 st Deadline to submit Economic Study Requests for 4 th Quarter Meeting review 4 th Quarter Stakeholder Meeting Review draft of current 10yr plan, discuss Economic Study requests, receive stakeholder input Other Coordination Activities Throughout the Year APS/SRP Coordination Meeting APS/WAPA Coordination Meeting WestConnect Meetings SWAT Meetings o AZTS o New Mexico o Eldorado Valley o Transmission Corridor o Short-circuit 36

37 4.C. Feedback on the Plan? Feedback on the Plan NERC Reliability Ten Year Plan See next slide to see how APS would evaluate plan submittals or alternatives. 37

38 Exhibit 1 APS Attachment E Transmission Planning Process Economic What Type of Study? 1 Reliability Regional Transmission Provider Evaluation High priority Local 2 Transmission Provider Economic Study Not high priority Does Transmission Provider s system meet NERC/WECC criteria? No Transmission Provider determines facilities needed with Stakeholder input Study results documented in a report and reviewed by Customer and Transmission Provider Yes TEPPC evaluates with Stakeholder input Customer Choice of Study at Customer s expense Does Transmission Provider s system meet local reliability criteria? No Transmission Provider determines facilities needed with Stakeholder input TEPPC determines high priority, performs study TEPPC determines not high priority Yes Transmission Provider coordinates with Sub- Regional Planning Group 1. Generator Interconnection Request studies are performed pursuant to the Large Generator Interconnection Procedure contained in the Transmission Provider s Open Access Transmission Tariff (OATT). Transmission Service Requests are also performed pursuant to OATT procedures. 2. All requests for economic planning studies received by the Transmission Provider are forwarded to TEPPC for inclusion in the TEPPC Master List. TEPPC will evaluate only those requests that have regional impacts. 38

39 4.D. Review Stakeholder proposals previously submitted APS received no stakeholder proposals in

40 4.E. Submittal of additional study plan proposals If you have study ideas for APS to consider, please send a detailed message to: apstransmission@aps.com Please include (at a minimum) Your Name/Company/Contact info ( /phone #) What the purpose of the study request is? And how will the results be used? E.g. Determine how much load the system can accommodate without new generation/transmission? Results will be used to inform developers where there may be opportunities for additional commercial development without transmission/generation investment. What year(s) and season(s) is of interest? What type of study reliability (power flow only?) economic? 40

41 4.F. APS Ten Year Plan Projects Draft Transmission Plan To be filed by Jan. 31,

42 4.F. APS changes since 2014 Plan Completed Projects None New Projects Ocotillo 230 kv Generation Project Advanced Projects Bagdad 115 kv Line Relocation ( ) Delayed Projects Scatter Wash 230/69 kv Substation (2021 TBD) Name Changes None 42

43 APS EHV & OUTER DIVISION 115/230 KV TRANSMISSION PLANS YUCCA TO ELDORADO TO MEAD / MARKETPLACE TO IMPERIAL VALLEY TO COLORADO RIVER N.GILA TO CRYSTAL ROUND VALLEY BAGDAD PALO VERDE- HASSAYAMPA 2015 SELIGMAN REDHAWK YAVAPAI SUN VALLEY DELANEY HOODOO WASH (WAPA) WILLOW LAKE Line Relocation CEDAR MOUNTAIN GILA RIVER/ PANDA SOLANA GILA BEND LIBERTY JOJOBA RUDD SANTA ROSA TAT MOMOLI VERDE WEST WING LEGEND EXISTING 500 KV LINES EXISTING 345 KV LINES EXISTING 230 KV LINES POWER PLANT EXISTING 115 KV LINES PLANNED 500KV LINES NUCLEAR POWER PLANT PLANNED 230KV LINES 115KV & ABOVE SUBSTATION (EXISTING) 230KV & ABOVE SUBSTATION (FUTURE) Substation locations and line routings depict an electrical connection only and do not reflect any assumed physical locations or routing. (WAPA) MORGAN DUGAS COCONINO YOUNGS CANYON GAVILAN PEAK (WAPA) PINNACLE PEAK OCOTILLO 2017 KYRENE COOLIDGE KNOX SUNDANCE DESERT BASIN SAGUARO NORTH NAVAJO MOENKOPI TO GLEN CANYON (WAPA) 2 circuits PREACHER CANYON TBD FLAGSTAFF (WAPA) MAZATZAL 2017 ORACLE JUNCTION CASA GRANDE SAN MANUEL ADAMS MURAL CHOLLA VALLEY FARMS SUGARLOAF PINAL CENTRAL MILLIGAN (SRP) FOUR CORNERS CORONADO STATE PROJECTS 2015 Hassayampa North Gila #2 500 kv Line Bagdad 115 kv Line Relocation 2016 Palo Verde Delaney 500 kv Line Delaney Sun Valley 500 kv Line 2017 Mazatzal 345/69 kv Substation 2018 Morgan Sun Valley 500 kv Line 43

44 PHOENIX METROPOLITAN AREA TRANSMISSION PLANS TO NEW WADDELL MORGAN TO NAVAJO TO PRESCOTT CAREFREE HWY. GAVILAN PEAK TO GLEN CANYON METRO PROJECTS TS10 TBD 2016 TO TO PALO VERDE DELANEY BELL RD. TS11 TBD TBD TBD SUN VALLEY 2016 TRILBY WASH 2015 WESTWING TBD TS2 TBD 2015 TBD TBD SURPRISE EL SOL RACEWAY TBD AGUA FRIA DEER VALLEY GLENDALE AVERY TBD I-17 FWY. I-17 FWY. SCATTER WASH TBD ALEXANDER 101 LONE PEAK SUNNYSLOPE REACH PIMA RD. PINNACLE PEAK BELL RD. CACTUS TO CHOLLA 2015 Palm Valley Trilby Wash 230 kv Line 2016 Sun Valley Trilby Wash 230 kv Line 2017 Ocotillo 230 kv Generation Project 2018 Morgan Sun Valley 500kV Line JOJOBA TBD BUCKEYE LIBERTY /TS4 Panda PALM VALLEY TO PALO VERDE WHITE TANKS BASELINE RD. JOINTLY OWNED EXISTING 500KV LINES APS EXISTING 345KV LINES APS EXISTING 230KV LINES APS PLANNED LINES 230KV 500KV RUDD I - 10 FWY. 230KV SUBSTATION (EXISTING) 230KV SUBSTATION (FUTURE) GENERATING SITE & 230KV SUBSTATION WEST PHOENIX COUNTRY CLUB LINCOLN ST. I - 10 FWY. 230kV LINES OWNED BY SRP OR WAPA 345kV LINES OWNED BY WAPA Substations locations and line routings are approximate MEADOWBROOK KNOX TO JOJOBA TO SANTA ROSA OCOTILLO SUPERSTITION FWY. BASELINE RD. KYRENE TO BROWNING 44

45 Yuma Area Transmission Plans To Pilot Knob 161 kv Riverside YCA Power Plant Arizona Ave. To Imperial Valley North Gila Agua Caliente Hoodoo Wash 2015 To Hassayampa YUMA PROJECTS California San Luis Yucca Power Plant TBD Laguna Arizona Mexico N.O. Cocopah TBD State 95 Baja Tenth St. 32 nd St. Waldrip Arizona Ave. Interstate 8 Ivalon Substation locations and line routings depict an electrical connection only and do not reflect any assumed physical locations or routing. Quechan Yuma Palms Temp South O Neill TBD 2018 Sanguinetti Marine Air Base Orchard 2018 EXISTING 500KV LINES PLANNED 500KV LINES PLANNED 230KV LINES EXISTING 161KV LINES EXISTING 69KV LINES PLANNED 69KV LINES Mittry Interstate 8 Redondo Araby 2018 N.O Gila (DOE) State 95 Foothills Desert Sands TRANSMISSION SUBSTATION NON-APS SUBSTATION DISTRIBUTION SUBSTATION (EXISTING) DISTRIBUTION SUBSTATION (PLANNED) GENERATING SITE & SUBSTATION Street, Highway 2015 Hassayampa North Gila #2 500 kv Line 2018 North Gila Orchard 230 kv Line Orchard 230/69 kv Substation 45

46 Bulk Transformer Additions/Replacements Description Year* Buckeye 230/69 kv Transformer #2 Replacement TBD Raceway 230/69 kv Transformer #2 TBD Palm Valley 230/69 kv Transformer #2 TBD Yavapai 230/69 kv Transformer # Saguaro 230/69 kv Transformer 2021 * Note: To Be Determined (TBD) listed due to detailed 69kV analysis not yet completed 46

47 4.G. APS Planning - Study Requests Generation Interconnection Requests Transmission Interconnection Requests Transmission Service Requests Economic Study Requests 47

48 4.G. APS Planning - Study Requests Generation Interconnection requests APS OASIS contains Generation Interconnection Queue 9 Solar projects 695 MW 2 Wind projects MW 1 Wind/Solar projects 101 MW wind/60 MW solar 3 Conventional projects 2384 MW Note: Generator Queue information as of 12/8/14 48

49 APS EHV & OUTER DIVISION 115/230 KV TRANSMISSION PLANS YUCCA TO ELDORADO TO MEAD / MARKETPLACE TO IMPERIAL VALLEY TO COLORADO RIVER D N.GILA LEGEND TO CRYSTAL ROUND VALLEY PALO VERDE- HASSAYAMPA 2015 EXISTING 500 KV LINES EXISTING 345 KV LINES EXISTING 230 KV LINES EXISTING 115 KV LINES PLANNED 500KV LINES PLANNED 230KV LINES BAGDAD SELIGMAN REDHAWK 115KV & ABOVE SUBSTATION (EXISTING) 230KV & ABOVE SUBSTATION (FUTURE) GILA RIVER/ PANDA GILA BEND YAVAPAI SUN VALLEY DELANEY HOODOO WASH (WAPA) WILLOW LAKE Line Relocation POWER PLANT Substation locations and line routings depict an electrical connection only and do not reflect any assumed physical locations or routing. CEDAR MOUNTAIN (WAPA) MORGAN G LIBERTY JOJOBA RUDD SANTA ROSA TAT MOMOLI VERDE DUGAS WEST WING NUCLEAR POWER PLANT COCONINO GAVILAN PEAK E YOUNGS CANYON (WAPA) PINNACLE PEAK OCOTILLO 2017 KYRENE COOLIDGE SAGUARO NORTH NAVAJO MOENKOPI TO GLEN CANYON (WAPA) PREACHER CANYON KNOX SUNDANCE DESERT BASIN TBD 2 circuits FLAGSTAFF (WAPA) MAZATZAL 2017 ORACLE JUNCTION CASA GRANDE SAN MANUEL ADAMS MURAL CHOLLA VALLEY FARMS SUGARLOAF PINAL CENTRAL MILLIGAN H (SRP) FOUR CORNERS CORONADO A - Delaney/Sun Valley 1 project 300 MW B - HAA-NG 500kV line 1 project 200 MW C - Gila Bend/Buckeye 2 projects 654 MW D Yuma 2 projects 55 MW E - Ocotillo 1 project 550 MW F - FC/Cholla/Showlow 4 projects 1670 MW G - Northern AZ 3 projects 1181 MW H- Cochise County 1 project 20 MW Note 1: Generator Queue information as of 12/8/14 Note 2: Figures displayed may not represent complete queue 49

50 4.G. Transmission Interconnection and Study Requests 3 Wires to Wires Interconnection Requests 43 Transmission Service Requests Currently no Economic Study Requests 50

51 4.G. APS Planning Comments & Questions Stakeholder comments/questions on 2014 Study Results or 2015 Study Requests Requests can be made at any time to: 51

52 5. Recommendations from 8 th BTA 115 kv inclusion in Ten Year Snapshot Study Load level range for reliability projects CRATF study report requirements New study to address effects of EE/DG 52

53 6. Stakeholder Questions & Comments Open discussion Reference Material WestConnect APS OASIS SRP OASIS 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 53

54 7. Action Items Review any action items, assignments, and due dates 12/18/2014 APS/SRP Stakeholder Meeting for Transmission Planning 54