JANUARY 2008

Duke Energy to purchase 150 megawatts of wind turbines
Assets join legion of development projects by Duke

Duke Energy is expanding its renewable energy portfolio through a contract to purchase 100 wind turbines from General Electric.

The turbines, capable of generating a total of 150 megawatts, are anticipated to be in service in the 2009-2010 timeframe on sites currently under review in the western and southwestern United States.

The company’s wind generation assets are managed by Duke Energy Generation Services (DEGS), a Duke Energy subsidiary that focuses on renewable energy, commercial power and on-site energy across the United States.

Earlier this year, DEGS acquired the development assets of Tierra Energy, a wind power development company located in Austin, Texas. The purchase included more than 1,000 megawatts of wind assets under development in the western and southwestern United States. Three of the projects in development - a total of approximately 240 megawatts - are located in Texas and Wyoming, and are anticipated to be in commercial operation in late 2008 or early 2009.

Terms of the contract with General Electric were not disclosed.