Allegheny Energy To Webcast October 26
Presentation at Edison Electric Institute Conference

Greensburg, Pa., October 21, 2004 - Allegheny Energy, Inc. (NYSE: AYE) invites investors to listen to a live Internet broadcast of its presentation to institutional investors and securities analysts at the Edison Electric Institute Financial Conference on October 26 in San Diego. Paul Evanson, Chairman, President and Chief Executive Officer, and Jeffrey Serkes, Senior Vice President and Chief Financial Officer, will make the presentation beginning at 10:30 a.m. (Eastern Daylight Time). To listen to the webcast, visit www.alleghenyenergy.com and click on the available audio link. Slides used in the presentation will be available on Allegheny Energy's website. A taped replay of the presentation will be available after the live broadcast.

Allegheny Energy

Headquartered in Greensburg, Pa., Allegheny Energy is an energy company consisting of two major businesses, Allegheny Energy Supply, which owns and operates electric generating facilities, and Allegheny Power, which delivers low-cost, reliable electric service to customers in Pennsylvania, West Virginia, Maryland, Virginia and Ohio. More information about Allegheny Energy is available at www.alleghenyenergy.com.