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Sunrise Powerlink Sunrise Powerlink A Link To A Renewable Future

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Project Description 120-mile electric transmission line from Imperial County to San Diego,

carrying 1,000 megawatts of clean power – enough energy for 650,000 homes Approximately 20 miles of Forest Service land Approximately 50 miles of BLM land Approximately 50 miles of private and other agencies’ land

Extensively reviewed by California Public Utilities Commission and the U.S. Bureau of Land Management, with substantial input from other agencies Four-year regulatory review process 43 public hearings 11,000 page EIR – largest in California history

Regulatory approval of Southern Route CPUC – December 18, 2008 BLM – January 20, 2009

Project cost -- $1.883 billion

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Sunrise Powerlink Benefits Improves reliability

Facilitates 1,000 MW of new renewable energy

Creates jobs

Stimulates the economy

Provides > $100 million in net customer benefits annually

Provides $190 million to mitigate project impacts

Demonstrates SDG&E’s leadership 33% Renewable Portfolio Stand (RPS) by 2020 Reduce greenhouse gas emissions to 1990 levels by 2020 4

Sunrise Powerlink Unlocking Renewable Potential Tessera Solar Utilizing Stirling Energy Systems SunCatchers

300MW of new Solar Thermal energy under contract in Imperial Valley Potential to develop an additional 450MW

LS Power - Centinela Solar Project 130MW of new Solar PV energy under contract in Imperial Valley Potential for further expansion

Wind Development on Tribal Lands 52MW wind energy facility currently selling power to SDG&E Developing over 200MW of new wind energy

Esmeralda Geothermal Two Imperial Valley projects in Truckhaven and San Felipe

MMR Power Solutions Mt. Signal Solar project in Imperial Valley

Successful Renewable Energy Request For Offers Over 500MW remain under negotiation/consideration

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Additional Infrastructure Needed Recent studies indicate that the San Diego – Imperial Valley

– Baja Mexico Mega-Region has the potential to become a global showcase for clean energy with a potential of nearly 12,000 MW of renewable electricity

Imperial Valley renewable energy resources potential: Solar Energy – 6,550 megawatts

Source: Renewable Energy Transmission Initiative (RETI) Phase 2A Draft Resource Report

Wind Energy – 3,495 megawatts including Baja California Sources: RETI Phase 2A Draft Resource Report

Geothermal Energy – 2,000 megawattsSource: Imperial Irrigation District Summit Blue Report 2008

California Renewable Energy Zones throughout California RETI – Renewable Energy Transmission Initiative CTPG – California Transmission Planning Group

California Transmission Planning Group

A Collaborative Approach

to State-wide

Transmission Planning

TANC

CTPG: Who We Are

A coalition comprised of all the entities within California responsible for transmission planning for the interstate grid.

Collaboration supplements the role that each California Balancing Authority has for planning to meet the needs of their service territory.

The CTPG:o Publicly Owned Utilities: IID, TID, SMUD and LADWPo California ISOo Investor Owned Utilities: PG&E, SCE, and SDG&Eo Other planning organizations: WAPA, TANC, and SCPPA

Study Objectives for 2010

Complete a statewide conceptual transmission plan by July 2010 and vet results with stakeholders

Conceptual plan will include multiple scenarios and will likely identify “least regrets” transmission applicable to all scenarios

Goal is to have “least regrets” projects move forward to state siting and approval processes in early 2011

Remaining 33% RPS transmission needs subject to further study in 2011