1. Central California Clean Energy Transmission Project
TSS Meeting #146
Seattle, WA
August 15-17, 2007

2. Approach to Transmission Development
Encourage resources to connect to areas where transmission capacity is available
Focus on multi-purpose projects
Use existing R/W before developing new R/W
Focus on implementing smaller transmission projects that can be placed in service quickly
Develop larger transmission projects
Maintain flexibility in developing transmission plans to deliver maximum benefits to customers in an environmentally responsible manner
Develop a California Sub-regional Transmission Plan through regional and sub-regional collaboration

3. L L Possible Future Transmission Corridors in California
Wind
Geo
Solar L
-- Major Load Centers in California L

4. Central California Clean Energy Transmission Project
Project Scope
Construct ~ miles of new 500 kV Double Circuit Tower Line from Midway to a new Substation east of Fresno on new R/W
Project Objective:
Facilitate efficient management of renewables to meet CA 20% RPS Goal
Increase Path 15 transfer capability by ~1,250 MW
Increase transfer of base load & as available renewable resources from S CA to N CA
Increase utilization of the Helms PSP to enhance the value of off-peak generation
Increase reliability to Yosemite/Fresno area
Reduce Fresno Area LCR
Expected Operation Date: Dec. 2012
Defers need for Gates-Gregg indefinitely
Pacific Gas & Electric Company
Bellota
Tesla
New Sub E2
Los Banos
Gregg
San Luis
Helms PSP
Moss Landing
Kings River
Panoche
McCall
PATH 15
Central California Clean Energy Transmission Project
Gates
Arco
Midway
Morro Bay
Diablo Canyon
PATH 26
To Southern California Edison Company

5. To Southern California Edison Company
Potential Routes
East Route:
~140 miles
Runs along the foothills – less impacts on farm lands, avoid urban areas
Potential use of SCE access roads
Lower probability of multiple 500 kV line outages than West Route
No 500 kV line crossing
Pacific Gas & Electric Company
Bellota
Tesla
New Sub E2
Los Banos
Gregg
San Luis
Helms PSP
Moss Landing
Panoche
Kings River
McCall
PATH 15
C3ET Project – East Route
West Route:
~180 miles
Crosses farm lands and urban areas
Lower probability of multiple 500 kV line outages
Crosses Four existing 500 kV lines
C3ET Project – West Route
Gates
Arco
Midway
Morro Bay
Diablo Canyon
PATH 26
To 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 E2
Install 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 procurement
Expected Operation Date ~ 2020:
Install a second 500/230 kV 1,120 MVA transformer bank at E2
Install 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 Valley
Potential 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 territory
Renewables imported from the NW and Canada at proposed Raven Substation
Load growth in Sacramento Valley and SF Bay Area
Captain Jack
Malin
Path 66
Raven
New Sub
To NW and Canada
125 mi
COTP
Table Mt.
Sierra Pacific (SPP)
140 mi
Lake
Tahoe
Potential projects south of Tesla -support
renewables in the southern portion of the PG&E service territory
Renewables imported from the South
Load growth in Fresno and SF Bay Area
Elverta
Tracy
Bellota
Tesla
40 mi
105 miles
Raven Sub
Helms
Metcalf
60 mi
Moss Landing
Los
Banos
Gregg
Path 15
Connection to Potential projects south of Midway - support
renewables in the southern CA and Desert SW
Load growth in S CA and seasonal exchange
C3ET Project
Also includes kV lines
terminated at Gates
Gates
Tehachapi Area
Diablo
Midway
Path 26
Southern California Edison (SCE)
Vincent

10. Questions?