Presentation on theme: "Central California Clean Energy Transmission Project"— Presentation transcript:
1 Central California Clean Energy Transmission Project TSS Meeting #146Seattle, WAAugust 15-17, 2007
2 Approach to Transmission Development Encourage resources to connect to areas where transmission capacity is availableFocus on multi-purpose projectsUse existing R/W before developing new R/WFocus on implementing smaller transmission projects that can be placed in service quicklyDevelop larger transmission projectsMaintain flexibility in developing transmission plans to deliver maximum benefits to customers in an environmentally responsible mannerDevelop a California Sub-regional Transmission Plan through regional and sub-regional collaboration
3 L L Possible Future Transmission Corridors in California WindGeoSolarL-- Major Load Centers in CaliforniaL
4 Central California Clean Energy Transmission Project Project ScopeConstruct ~ miles of new 500 kV Double Circuit Tower Line from Midway to a new Substation east of Fresno on new R/WProject Objective:Facilitate efficient management of renewables to meet CA 20% RPS GoalIncrease Path 15 transfer capability by ~1,250 MWIncrease transfer of base load & as available renewable resources from S CA to N CAIncrease utilization of the Helms PSP to enhance the value of off-peak generationIncrease reliability to Yosemite/Fresno areaReduce Fresno Area LCRExpected Operation Date: Dec. 2012Defers need for Gates-Gregg indefinitelyPacific Gas & Electric CompanyBellotaTeslaNew Sub E2Los BanosGreggSan LuisHelms PSPMoss LandingKings RiverPanocheMcCallPATH 15Central California Clean Energy Transmission ProjectGatesArcoMidwayMorro BayDiablo CanyonPATH 26To Southern California Edison Company
5 To Southern California Edison Company Potential RoutesEast Route:~140 milesRuns along the foothills – less impacts on farm lands, avoid urban areasPotential use of SCE access roadsLower probability of multiple 500 kV line outages than West RouteNo 500 kV line crossingPacific Gas & Electric CompanyBellotaTeslaNew Sub E2Los BanosGreggSan LuisHelms PSPMoss LandingPanocheKings RiverMcCallPATH 15C3ET Project – East RouteWest Route:~180 milesCrosses farm lands and urban areasLower probability of multiple 500 kV line outagesCrosses Four existing 500 kV linesC3ET Project – West RouteGatesArcoMidwayMorro BayDiablo CanyonPATH 26To Southern California Edison Company
6 Project Description Expected Operation Date - December 2012: Build a 500 kV double circuit tower line (about 140 – 180 miles in length) with two 2,300 kcmil AAL conductors (bundled), with both circuits strung.Build a new 500 kV Substation (E2) with one 500/230 kV 1,120 MVA transformer bank,Loop the Helms – Gregg #1 and #2 230 kV lines into the E2 Substation,Build two 500 kV line terminations each at Midway and E2Install additional voltage supports in the Fresno area. The amount and location of the voltage support will be evaluated in a voltage stability study.
7 Project Implementation Plan Phase I:Prepare PEA pursuant to the CEQA and the CPUC permitting requirements.Perform the necessary engineering and design work required to prepare the PEA.Coordinate WECC Regional Planning and Path Rating Process with external interested parties.Phase II:File an application in December 2008 with the CPUC for a CPCN.Phase III:Assuming the CPUC grants a CPCN by December 2009, land acquisition and project construction would start immediately to achieve a December 2012 completion date.
8 Potential Future Expansion C3ET Project must be designed and sited to allow for rational, cost-effective future expansion of the 500 kV grid as required by future load growth and RPS procurementExpected Operation Date ~ 2020:Install a second 500/230 kV 1,120 MVA transformer bank at E2Install additional voltage supports in the Fresno area. The amount and location of the voltage support will be evaluated in a voltage stability study.Other expansion possibilities:Potential expansion north of E2 to San Francisco Bay Area and Sacramental ValleyPotential expansion south of Midway to Southern California and Desert SW
9 Possible Long-Term Transmission Expansion Bonneville Power Administrative (BPA)Projects north of Tesla - support based on Option CA2 (other options possible)Renewables in the northern portion of the PG&E service territoryRenewables imported from the NW and Canada at proposed Raven SubstationLoad growth in Sacramento Valley and SF Bay AreaCaptain JackMalinPath 66RavenNew SubTo NW and Canada125 miCOTPTable Mt.Sierra Pacific (SPP)140 miLakeTahoePotential projects south of Tesla -supportrenewables in the southern portion of the PG&E service territoryRenewables imported from the SouthLoad growth in Fresno and SF Bay AreaElvertaTracyBellotaTesla40 mi105 milesRaven SubHelmsMetcalf60 miMoss LandingLosBanosGreggPath 15Connection to Potential projects south of Midway - supportrenewables in the southern CA and Desert SWLoad growth in S CA and seasonal exchangeC3ET ProjectAlso includes kV linesterminated at GatesGatesTehachapi AreaDiabloMidwayPath 26Southern California Edison (SCE)Vincent