Allegheny Energy - Subsidiary Companies

Subsidiary Companies

Allegheny Energy operates its electric distribution operations under the trade name Allegheny Power. Its regulated subsidiaries are West Penn Power (Pennsylvania), Monongahela Power (northern West Virginia), and The Potomac Edison Company (western Maryland, parts of eastern West Virginia, and northern Virginia). The electric generating plants are operated by subsidiary Allegheny Energy Supply Company and Monongahela Power. Subsidiary companies have been established for proposed transmission line projects.

Allegheny Energy formerly operated in sections of eastern Ohio, until early 2006, when regulatory issues within Ohio forced them to sell the territory to Columbus Southern Power, a division of American Electric Power, Inc.

In 1999, Monongahela Power purchased the distribution assets of West Virginia Power, a utility owned by UtiliCorp United based in Lewisburg, West Virginia. West Virginia Power's operations were centered on portions of southeastern West Virginia. It is said UtiliCorp sold the subsidiary to concentrate on its main operations in the midwestern US. UtiliCorp had purchased the division from Dominion Resources in 1986, of which it had operated as the West Virginia Power division of Virginia Electric & Power Company (VEPCO).

In 2010, Allegheny officially sold their Virginia service area. Areas along and west of Interstate 81 were purchased by Shenandoah Valley Electric Cooperative of Mount Crawford, Virginia, while areas to the east were sold to Rappahannock Electric Cooperative of Fredericksburg, Virginia.