Media Advisory: Duke Energy’s David L. Hauser to Address Lehman Brothers 22nd Annual CEO Energy / Power Conference

CHARLOTTE, N.C. - Duke Energy Group Executive and Chief Financial Officer David L. Hauser, will speak at Lehman Brothers 22nd Annual CEO Energy / Power Conference, Sept. 2, 2008, in New York City.

A live webcast of the presentation will begin at approximately 3 p.m. ET. The webcast will be available via the Investors section of Duke Energy’s Web site at: www.duke-energy.com/investors/.

Duke Energy, one of the largest electric power companies in the United States, supplies and delivers electricity to approximately 4 million U.S. customers in its regulated jurisdictions. The company has approximately 35,000 megawatts of electric generating capacity in the Midwest and the Carolinas, and natural gas distribution services in Ohio and Kentucky. In addition, Duke Energy has more than 4,000 megawatts of electric generation in Latin America, and is a joint-venture partner in a U.S. real estate company. Headquartered in Charlotte, N.C., Duke Energy is a Fortune 500 company traded on the New York Stock Exchange under the symbol DUK. More information about the company is available on the Internet at: www.duke-energy.com.