WGL Holdings, Inc. (WGL Holdings) is a holding company. The Company own subsidiaries, which sells and delivers natural gas and/or provide a range of energy-related products and services to customers in the District of Columbia and the surrounding metropolitan areas in Maryland and Virginia. The Company operates in three subsidiaries: regulated utility segment, retail energy-marketing segment and design-build energy systems segment. The Company�s wholly owned subsidiaries include Washington Gas Light Company (Washington Gas), Washington Gas Resources Corporation (Washington Gas Resources), Hampshire Gas Company (Hampshire) and Crab Run Gas Company (Crab Run). Washington Gas is a regulated public utility that sells and delivers natural gas to customers in the District of Columbia and adjoining areas in Maryland, Virginia and several cities and towns in the northern Shenandoah Valley of Virginia.