Pepco Holdings, Inc., through its subsidiaries, engages in the transmission, distribution, and supply of electricity. The company also distributes and supplies natural gas. In addition, the company designs, constructs, and operates energy projects and distributed generation equipment, including combined heat and power plants principally for federal, state, and local government customers. Further, it provides underground transmission, and distribution construction and maintenance services for electric utilities in North America; and steam and chilled water services under long-term contracts through systems owned and operated primarily to hotels and casinos in Atlantic City, New Jersey. Pepco Holdings, Inc. was founded in 1896 and is based in Washington, the District of Columbia.