Allegheny Energy Supply Company, LLC is an unregulated subsidiary of Allegheny Energy Inc. Allegheny Energy Supply Company, LLC is not the same company as Allegheny Power. The prices of Allegheny Energy Supply Company, LLC are not regulated by the Public Utility/Service Commission. You do not have to buy electricity from Allegheny Energy Supply Company LLC in order to receive the same quality regulated services from Allegheny Power.