| Allegheny Energy Inc.(AE) is a utility holding company that operates in the core businesses of electricity generation,& transmission and distribution. AE's operations are aligned into two segments: the Generation & Marketing segment, which comprises its power generation operations, & the Delivery and Services segment, which comprises its regulated electric and natural gas transmission and distribution (T&D) operations and other unregulated operations not related to power generation & T&D. The principal companies & operations comprising the Generation and Marketing segment are Allegheny Energy Supply Co. LLC; the West Virginia jurisdictional generating assets of Monongahela Power Co., which produce electricity for Monongahela's West Virginia customers, & Allegheny Generating Company. Allegheny carries on its T&D business through Monongahela, The Potomac Edison Company & West Penn Power Company. |