COLUMBUS, Ohio, July 21, 2006 – American Electric Power (NYSE: AEP) has scheduled its quarterly earnings conference call with financial analysts for 10 a.m. EDT Thursday, July 27. The call will be broadcast live over the Internet at http://www.aep.com/go/webcasts.

The webcast will include audio of the conference call as well as visuals of charts and graphics referred to by AEP management during the call.

The call will be archived on http://www.aep.com/go/webcasts for use by those unable to listen during the live webcast.

Minimum requirements to listen to broadcast: The Windows Media Player software, free from http://windowsmedia.com/download, and at least a 56Kbps connection to the Internet.

American Electric Power is one of the largest electric utilities in the United States, delivering electricity to more than 5 million customers in 11 states. AEP ranks among the nation’s largest generators of electricity, owning nearly 36,000 megawatts of generating capacity in the U.S. AEP also owns the nation’s largest electricity transmission system, a nearly 39,000-mile network that includes more 765 kilovolt extra-high voltage transmission lines than all other U.S. transmission systems combined. AEP’s utility units operate as AEP Ohio, AEP Texas, Appalachian Power (in Virginia, West Virginia and Tennessee), Indiana Michigan Power, Kentucky Power, Public Service Company of Oklahoma, and Southwestern Electric Power Company (in Arkansas, Louisiana and east Texas). American Electric Power, based in Columbus, Ohio, is celebrating its 100th anniversary in 2006.