March 02, 2015 Mr. Tracy Rolstad Chair, WECC Technical Studies Subcommittee Avista PO Box 3727 MSC-16 1411 East Mission Ave Spokane, WA 99220-3727 Mr. Enoch Davies WECC Technical Staff 155 North 400 West Salt Lake City, UT 84103-1114 Subject: Report Pacific Gas and Electric Company s Revised 2015 Annual Progress Attached is Pacific Gas and Electric Company s 2015 Annual Progress Report. The new facility additions and planned system operation are in conformance with NERC Standards and WECC System Performance Criteria. If you have any questions, please call me at (415) 973-3659 or via e-mail at axpt@pge.com. Sincerely, Anupama Pandey, TSS Rep Transmission System Planning, PG&E 1
2015 Annual Progress Report to WECC Pacific Gas and Electric Company Waiver of Significant Transmission Project Status Tables 1 and 2 update the planned transmission and generation projects, respectively, in PG&E service area that were presented in PG&E s 2012, 2013, and 2014 Annual Progress Reports. These projects were granted waiver of Significant Transmission Project status for the purpose of Project Coordination Review Process. Tables 3 and 4 list the planned transmission and generation projects, respectively, in PG&E service area requesting waiver of Significant Transmission Project status. The purpose of these projects is to serve local load, to enhance or maintain local reliability, and/or to reduce local capacity requirements. These projects are not expected to have significant impacts on the operation of the Western Interconnected System. PG&E requests waivers of the Significant Transmission Project status for the purpose of Project Coordination Review Process. Table 1 Planned Transmission Projects Waiver of Significant Transmission Project Status Granted in 2012, 2013, and 2014 1 PROJECT NAME PROJECT DESCRIPTION DATE IN SERVICE Panoche-McMullin 230 kv Helms PSP Special Protection Scheme The Panoche-McMullin 230 kv Line will be reconductored to be capable of carrying 1893 amps under normal and emergency conditions. Upgrades to terminal equipment at Panoche and McMullin substations should be performed as necessary to accommodate the higher ratings. Install redundant special protection schemes at multiple substations and Helms PSP to trip pumping units offline at Helms PSP. In Service May-15 Henrietta-McCall 230kV The Henrietta to McCall section of the Gates-McCall 230 kv Line will be reconductored to be capable of carrying 1893 amps under normal and emergency conditions. Upgrades to terminal equipment at Gates, Henrietta and McCall substations should be performed as necessary to accommodate the higher ratings. Jan-15 Pittsburg - Tesla 230 kv Newark - Ravenswood 230 kv Reconductor the Pittsburg-Tesla 230 kv Nos. 1 and 2 Lines with larger capacity conductors. Reconductor the Newark - Ravenswood 230 kv Line with larger conductors. In Service Oct-16 1 Facilities indicated In Service will be removed from the 2016 annual progress report. 2
PROJECT NAME PROJECT DESCRIPTION DATE IN SERVICE Tulucay 230/60 kv Transformer No.1 Capacity Increase Embarcadero-Potrero 230 kv Project McMullin-Kearney 230 kv Weber 230/60 kv Transformer Nos. 2 and 2A Replacement Kearney 230/70 kv Transformer 2 Contra Costa Moraga 230 kv Moraga Transformer No. 2 Capacity Increase Midway-Kern PP 230 kv Line Nos. 1, 3 and 4 Capacity Increase Project Moraga - Castro Valley 230 kv Line Capacity Increase Project Fulton 230/115 kv Transformer Tesla - Newark 230 kv Upgrade II Rio Oso 230/115 kv Transformers Rio Oso Area 230 kv Voltage Support Pittsburg 230/115 kv Transformer Capacity Increase Ashlan-Gregg and Ashlan- Herndon 230 kv Reconductor San Mateo Synchronous Condensor Replacement This project proposes to replace Tulucay Circuit Breaker No. 62 and all of its associated switches with a circuit breaker rated at 2000 Amps or higher. Any other associated terminal equipment will also be replaced as necessary Construct a new 230 kv underground cable to connect Embarcadero and Potrero substations. The McMullin to Kearney section of the Panoche- Kearney 230 kv Line will be reconductored to be capable of carrying 1893 amps under normal and emergency conditions. Upgrades to terminal equipment at Kearney and McMullin substations should be performed as necessary to accommodate the higher ratings. Replace Weber 230/60 kv Transformer Nos. 2 and 2a with a new transformer rated at least 300 MVA with LTC and associated equipment Install second 230/70 kv Transformer at Kearney Substation rated for 200 MVA or higher, install 4 element 230 kv ring, expand 70 kv bus and reterminate lines Reconductor the Contra Costa - Moraga 230 kv DCTL with larger capacity conductors. Replace Transformer number 2, 230/115 kv at Moraga Substation with a 420 MVA rated unit. Replace limiting components at Kern PP and Midway Substations, to achieve full capacity on the Midway- Kern 230 kv Line Nos. 1, 3 and 4 Upgrade the limiting substation equipment (jumper conductors and wave traps) at Moraga and Castro Valley substations This project proposes to install a 230/115 kv transformer at Fulton Substation rated for 420 MVA or higher. Reconductor limiting sections of Tesla - Newark 230 kv No. 2 with larger capacity conductors. Replace the Rio Oso 230/115 kv transformers (Nos. 1 and 2) with two 420 MVA rated transformers. Convert 115 kv bus to BAAH. Install a new Static Var Compensator (SVC) at Rio Oso Substation and a new Shunt Capacitor at Atlantic Substation. Install 3rd 230/115 kv Transformer at Pittsburg Substation with a rating of 420 MVA Reconductor limiting sections of Ashlan-Gregg and Ashlan-Herndon 230 kv sections with higher rated conductors. Install reactive support device to replace old synchronous condensers at 115kV. Oct-17 Apr-15 In Service Jul-16 Oct-16 Apr-18 May-21 3
PROJECT NAME PROJECT DESCRIPTION DATE IN SERVICE Vaca Dixon - Lakeville 230 kv Borden 230 kv Voltage Support Morro Bay 230/115 kv Transformer Kern PP 230 kv Area Reinforcement Project Wheeler Ridge Voltage Support Rio Oso Atlantic 230 kv Line Contra Costa sub 230kV Switch Replacement Gates No. 2 500/230 kv Transformer Kearney-Herndon 230 kv Line Reconductor Warnerville-Wilson 230 kv Series Reactor Diablo Canyon Voltage Support Project Lockeford-Lodi Area 230 kv Development Midway-Andrew 230 kv Moraga-Potrero 230 kv Project Reconductor the Vaca Lakeville No. 1, Tulucay Vaca, and Tulucay Lakeville 230 kv Lines with larger capacity conductors. This project proposes to loop the Wilson-Gregg 230 kv Line into Borden Substation (Borden) and install 200 MVARs of mechanically switched capacitors on the Borden 230 kv bus. Install an additional 230/115 kv transformer at Morro Bay Substation rated for 200 MVA or higher. Convert Kern PP 230 kv double bus single breaker arrangement to breaker and a half Replace limiting equipment on Kern PP 230/115 kv transformer No. 4 as necessary to achieve full transformer rating Install a 230/115 kv Transformer Special Protection Scheme at Kern 115 kv to mitigate overloads of Kern PP Transformer Nos. 3, 4, and 5 Install three 75 MVAR steps of mechanically switched capacitors on the Wheeler Ridge 230 kv bus, expand the 230 kv bus as necessary reconductor 0.5 miles of the Wheeler Ridge-Lakeview 70 kv line and transfer Copus from the Old River-Copus 70 kv line to the Wheeler Ridge-Lakeview 70 kv line. Construct a second Rio Oso Atlantic 230 kv Line. Replace 230 kv Switch No. 239 at Contra Costa Substation that currently limits the Contra Costa PP- Contra Costa Sub 230 kv Line to 1600 Amps. Any other limiting element will be replaced as well. Install a second 500/230/13.8 kv transformer (three single-phase units, 374 MVA each) at Gates Substation Reconductor 10 miles of the Kearney - Herndon 230 kv Line Install a 230 kv multi-step Reactor totaling 50.5 ohms, and associated equipment at Wilson Substation, on the Warnerville-Wilson 230 kv line Install a +150/-75 MVAR Reactive support device at Diablo Canyon 230 kv Substation Construct new 15 mile 230 kv DCTL from Eight Mile Substation to Lockeford Substation Upgrade existing 65 miles long Midway-Santa Maria 115KV line to 230kV Establish a 230 kv connection between Moraga and Potrero Substations. Jul-17 May-19 May-20 Dec-16 May-20 Dec-20 4
Table 2 Planned Generation Interconnection Projects Waiver of Significant Transmission Project Status Granted in 2014 1 PROJECT NAME PROJECT DESCRIPTION DATE IN SERVICE Solar Star Generation Interconnection Project Build a 230 kv Quinto Switching Station to interconnect 110 MW solar generation to Pacific Gas and Electric Company's (PG&E's) Los Banos-Westley 230 kv Line and reconductoring 26 miles of the line from switching station to Westley Sub Jun-15 Table 3 Planned Transmission Projects Requesting Waiver of Significant Transmission Project Status PROJECT NAME PROJECT DESCRIPTION DATE IN SERVICE Los Banos-4C779 #1 230kV Line Project Gregg-Herndon #2 230 kv Line Circuit Breaker Bellota Warnerville 230 kv Line Glenn 230/60 kv Transformer No. 1 Replacement Monta Vista 230 kv Bus Upgrade Midway-Kern PP 230 kv #2 Line Project Estrella Substation Midway Fault Duty Mitigation Project Wheeler Ridge Junction Substation Morgan Hill Area Reinforcement Project Reconductor 4.5 miles of the Los Banos - Panoche 230 kv No. 1 Line with a higher capacity conductor Replace limiting terminal equipment on the Herndon- Gregg #2 230 kv Line at Herndon substation. Reconductor the Bellota Warnerville 230 kv Line with a larger capacity conductor Replace the existing 230/60 kv Transformer No. 1 and regulator at Glenn with a new 3-phase, 230/60 kv with a Load Tap Changer. Install bus-sectionalizing and bus-parallel breakers on the Monta Vista 230 kv bus Reconductor the Midway-Kern #1 230 kv Line, split it to Midway-Kern #1 and #2 230kV Lines, remove crosstie connections to split the Midway-Kern #1 Line into two circuits, reconductor the Bakersfield #1 and #2 230 kv Taps, loop Bakersfield 230 kv substation, remove Stockdale 230 kv Tap #1 and #2 from the Midway-Kern lines and relocate to Kern PP 230 kv bus Construct a new Estrella 230/70 kv substation, with Breaker and a Half (BAAH) bus configuration, approximately 5 miles east of the existing Paso Robles Substation. Install one 45 MVA distribution 230/12 kv, 2 feeder breakers and associated outlets Install reactors at 230 kv side of Midway transformer banks 11, 12 and 13. Construct a new 230/115 kv Substation with Breaker and a Half at Wheeler Ridge Junction, Convert 15.5 miles of the Wheeler Ridge Lamont 115 kv Line to 230 kv Construct new 230/115 kv Spring Substation in Morgan Hill, with connections into the Metcalf-Moss Landing No. 2 230 kv Line and the Morgan Hill-Llagas 115 kv Line. Jul-16 May-19 May-19 May-20 May-21 5
Table 4 Planned Generation Interconnection Projects Requesting Waiver of Significant Transmission Project Status PROJECT NAME 2 PROJECT DESCRIPTION DATE IN SERVICE Q779 Q829 Q643X Q877 Q258 Interconnect a 200 MW (net output) solar-based generation facility to Los Banos Panoche 230 kv Line No. 1 by looping in through a new PG&E-owned switching station. The new Switching Station is a 2-Bay, 5 Breaker 230 kv. Interconnect a 240 MW (net output) of generation facility to a new PG&E owned 230kV switching station that loops into PG&E s Moss Landing Panoche and Coburn Panoche 230 kv Lines. Construct a new 3 Bay, 8 breaker Switching station (BAAH) Interconnect a 200 megawatt (MW) (net output) of generation facility to a new PG&E owned 230 kv switching station that loops into PG&E s Panoche Helm and Panoche Kearney 230 kv lines. Interconnect 280 MW solar generation to Morro Bay - Gates 230 kv Line Number 2. To interconnect new generation, install a new 230 kv circuit breaker at Contra Costa Substation, install SPS at Contra Costa Substation, reconductor Contra Costa Delta Pumps 230 kv Line, only east circuit, reconductor Las Positas Newark 230 kv Line, only west circuit. Oct-16 2 California ISO Generation Interconnection Queue Number 6