News Release

FOR IMMEDIATE RELEASE

Contact: Charles Coleman (626) 302-7982 Jeff Sheldon (512) 440-0305

Edison International Cielo Wind Power

Edison Mission Group and Cielo Wind Power

Announce New Wind Project in West Texas

AUSTIN, Texas – October 3, 2007 – Edison Mission Group (EMG), a subsidiary of Edison International, announced that it has finalized an agreement with Cielo Wind Power, LP, of Austin, Texas, to acquire the Goat Mountain Wind Ranch™ project in west Texas.

Located approximately 30 miles north of San Angelo, the Goat Mountain project will generate 150 megawatts (MW) of wind-generated electricity when fully operational. The energy generated by the facility will be sold on a merchant basis to a number of energy suppliers in the ERCOT (Electric Reliability Council of Texas) market which covers an area in Texas with a population of more than 20 million people. Goat Mountain will be EMG’s first wind project in the ERCOT market.

“We look forward to expanding our wind energy capabilities with the addition of the Goat Mountain project,” said Randy Mann, vice president of wind development at EMG. “This new wind project enhances our rapidly growing wind portfolio by adding generation capacity that will supply environmentally friendly power on a merchant basis to a market that is new to Edison Mission Group. Providing more sources of clean, renewable energy is a key focus for us, as we continue to add new projects to our wind energy development pipeline.”

The Goat Mountain wind project will feature a total of 109 turbines manufactured by Mitsubishi Heavy Industries on approximately 10,500 acres of land. “EMG and Mitsubishi have assembled a professional construction and operations team to complete the project by the end of 2008,” said Walt Hornaday, president of Cielo Wind Power.

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EMG and Cielo Wind Power Announce New Wind Project

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EMG and Cielo Wind Power have jointly developed the site. Goat Mountain is EMG’s second wind project in Texas. EMG and Cielo Wind Power successfully developed and commercialized the Wildorado Wind Ranch™ near Amarillo, Texas, earlier this year. The 161-MW facility provides electricity to Southwestern Public Service Company under a long-term power purchase agreement.

EMG is one of the largest owners and operators of wind energy projects in the United States. Headquartered in Irvine, California, EMG currently has a portfolio of 993 MW of wind power capacity that includes 20 projects, either in operation or under

construction, in seven states. The company has an additional 3,000 MW of capacity from potential wind projects in its development pipeline in nine more states.

Based in Austin, Texas, Cielo Wind Power is the largest independently owned wind power developer in the southwestern United States. The company has developed 1,148 MW of wind-generated electricity, with its operations dedicated solely to the wind power industry.

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Edison Mission Group (EMG) is headquartered in Irvine, Calif., and manages the competitive power generation business of Edison International (NYSE: EIX), an electric power generator and distributor, and an investor in infrastructure and renewable energy projects.