It engages in two principal businesses, electricity and natural gas delivery (Power Delivery); and competitive energy generation, marketing, and supply (Competitive Energy). The Power Delivery business consists of the transmission and distribution of electricity, and the distribution of natural gas in all or parts of Delaware, Maryland, New Jersey, Ohio, Pennsylvania, Virginia, West Virginia, and the District of Columbia.
As of December 31, 2004, the company delivered electricity to approximately 1.
8 million customers in the mid-Atlantic region, and distributed natural gas to approximately 118,000 customers in Delaware.
The Competitive Energy business provides competitive generation, marketing, and supply of electricity and gas, and related energy management services, primarily in the mid-Atlantic region.
It offers wholesale electric power, capacity, and ancillary services in the wholesale markets, and supplies electricity to other wholesale market participants under long-term bilateral contracts.
The company also sells natural gas and fuel oil to end-users and to wholesale market participants, as well as retail electricity and natural gas to residential, commercial, industrial, and governmental customers.
In addition, Competitive Energy provides integrated energy management services, including energy-efficiency contracting, development and construction of green power facilities, central plant and other equipment operation and maintenance, fuel management, and home service agreements for residential customers.
Further, it offers high voltage construction and maintenance services to utilities and other customers throughout the United States; and low voltage electric and telecommunication construction, and maintenance services in the Washington, D.C. area.
Pepco Holdings was incorporated in 2001 and is headquartered in Washington, D.C.

