March 14, 2014 Mr. Tracy Rolstad, Chair WECC Technical Studies Subcommittee Avista Corp. 1411 East Mission Avenue Spokane, WA 99220-3727 Mr. Enoch Davies WECC Technical Staff 155 North 400 West, Suite 200 Salt Lake City, UT 84103-1114 Subject: 2014 Annual Progress Report In accordance with the WECC Progress Report Policies and Procedures, the following is s 2014 Annual Progress Report for transmission and generation facility additions and changes on SCE 500 kv and 220 kv systems: Existing Projects With No Changes Since the 2013 WECC Annual Progress Report 1 Mesa 500/220 kv Substation 2 Lighthipe 500/220 kv Substation 3 Valley-Serrano 500 kv #2 Transmission Line 4 Coolwater-Lugo (South of Kramer) 220 kv T/L 5 Primm 220 kv Substation 6 Beachball Substation and Static VAR Compensator (SVC) 7 Wildlife (formerly Jurupa) 220 kv Substation 8 Riverside 220 kv Interconnection
9 Abengoa Solar Project 10 Genesis-McCoy Solar Project 11 Desert Stateline 12 Silver State South 13 Catalina Wind Project 14 15 16 17 18 Existing Projects With Changes Since the 2013 WECC Annual Progress Report Whirlwind 2nd 500/220 kv Transformer Change the operating date to September 2014 Alberhill 500/115 kv Substation Change the operating date to January 2018 West Of Devers (WOD) Upgrade Project Change the operating date to 2020 East Kern Wind Resource Area (EKWRA) 66 kv Project Change the operating date to December 2014 Tehachapi Renewable Transmission Project Change the operating date to October 2009 December 2016 Change the description to Construct the following 500 kv and 220 kv transmission facilities needed to connect 4500 MW renewable generation in the Tehachapi area: Antelope-Pardee 220 kv (In-Service) WindHub 500/220 kv Substation (In-Service) Antelope-Vincent 500 kv (In-Service) Antelope WindHub 500 kv (In-Service) Antelope Vincent 500 kv #2 (In-Service) Whirlwind 500/220 kv sub with loop-in of Midway Vincent #3 500 kv (In-Service) Antelope Whirlwind 500 kv (In-Service) WindHub 500 kv, Antelope 500 kv and Vincent 500/220 kv upgrades Whirlwind WindHub 500 kv (In-Service) -2-
Vincent Rio Hondo 500 kv (Energized at 220 kv) Vincent Mira Loma 500 kv Vincent Mesa 500 kv (Energized at 220 kv) Path 42 Upgrade Project (SCE s Scope of Work) 19 Change the operating date to December 2014 San Joaquin Cross Valley Loop 20 Change the operating date to September 2014 North of Magunden Long Term Plan 21 Change the operating date to June 2024 Rector SVS Expansion 22 Change the operating date to December 2014 SCE Owned Eldorado 500/220 kv 5AA-Bank 23 Change the operating date to October 2015 Blythe Solar Power Change the Gen MW to 485 MW 24 Change the operating date to June 2015 Change the description to Interconnect a 485 MW Solar Generating Facility to SCE's expanded Colorado River 500/200 kv Substation. Palen Solar 25 Change the operating date to June 2016 Manzana Wind 26 Change the operating date to December 2015 Pacific Wind Project 27 Change the operating date to December 2015 Alta 2012 Project 28 Change the operating date to June 2017 North Sky River Wind Project 29 Change the operating date to June 2015 30 Antelope Valley Solar PV 1-3-
31 Change the Gen MW to 310 MW Change the description to Interconnect a 310 MW Solar Generating Facility to SCE's Whirlwind 220 kv Substation. Project is being phased in that will be completed by the operating date. Antelope Valley Solar PV 2 Change the Gen MW to 276 MW Change the description to Interconnect a 276 MW Solar Generating Facility to SCE's Whirlwind 220 kv Substation. Project is being phased in that will be completed by the operating date. Remove the Following Projects 32 Pisgah 500/220 kv Substation - Cancelled 33 Barre - Ellis 220 kv De-Coupling In-Service 34 Johanna and Santiago Capacitor Banks In-Service 35 Viejo Capacitor Banks In-Service 36 Devers-Coachella 220 kv Loop-In In-Service 37 Split Devers-Mirage 115 kv System In-Service 38 Red Bluff Substation 500/220 kv In-Service Devers-Colorado River 500 kv (DCR) Project [formerly Devers-Palo Verde 500 kv # 2 39 (DPV2) Project California Portion In-Service 40 Colorado River 220 kv Expansion In-Service 41 West Of Devers (WOD) Interim Project In-Service Cassini (formerly Antelope Valley-Valyermo) New 220/66 kv Substation and related 42 Transmission Lines - Cancelled 43 Sandlot (Formerly Water Valley) 220 kv Substation In-Service 44 Jasper 220 kv Substation 45 Eldorado-Ivanpah Transmission Project (EITP) In-Service 46 3 rd A-Bank and Rebuild of the 115 kv Switch Rack at Victor Substation In-Service -4-
47 NRG / El Segundo Generation Project In-Service 48 CPV Sentinel In-Service 49 Desert Sunlight PVI and PVII In-Service 50 AV Solar I In-Service 51 Edison Mission-Walnut Energy 1 500.50 MW In-Service 52 Coloseum 1 In-Service 53 Coloseum 2 In-Service 54 Coloseum 3 In-Service 55 New Projects To Be Included in the 2014 WECC Annual Progress Report Eldorado-Lugo Series Cap Upgrade Description: Upgrade series capacitor and terminal equipment at Eldorado and Lugo to 3800A/4000A (SN/SE) 56 Date: Planned operating date of December 2016 Lugo-Mohave Series Cap Upgrade Description: Upgrade series capacitor and terminal equipment at Mohave to 3800A/4000A (SN/SE) 57 Date: Planned operating date of December 2016 Whirlwind 3rd 500/220 kv Transformer Bank Description: Add a third transformer bank at the existing Whirlwind Substation to add capacity to deliver new renewable generation interconnecting to the 220kV bus. 58 Date: Planned operating date of March 2017 Kramer-Lugo 230 kv No. 1 & 2 Description: Loop-in the Kramer-Lugo 230 kv No. 1 and No. 2 lines into Victor Substation creating Kramer-Victor 230 kv No. 1 and No. 2 and Lugo-Victor 230 kv No. 1 and No. 2. Date: Planned operating date of 2015-5-
59 Rising Tree Project Description: Interconnect a 200 MW Wind Generating Facility to SCE s Windhub 220 Substation via a generation tie line. Project is being phased in that will be completed by the operating date. 60 Date: Planned operating date of October 2015 Alta Wind Q97 Description: Interconnect a 160 MW Wind Generating Facility to SCE s Whirlwind 220 Substation via a generation tie line shared with Alta Wind Q153. 61 Date: Planned operating date of October 2016 Alta Wind Q153 Description: Interconnect a 100 MW Wind Generating Facility to SCE s Whirlwind 220 Substation via a generation tie line shared with Alta Wind Q97. Date: Planned operating date of October 2016 If you have any questions regarding SCE s 2014 Annual Progress Report, please call Grace Martinez at (909) 274-1629 Sincerely, Original Signed David Franklin TSS Member cc: TSS Membership -6-