| WGL Holdings, Inc. (WGL Holdings) is a holding company, which through its subsidiaries, sells and delivers natural gas and provides a variety of energy-related products and services to customers primarily in the District of Columbia and the surrounding metropolitan areas in Maryland and Virginia. It has three operating segments: regulated utility segment, retail energy-marketing segment and design-build energy systems segment. The Company's 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). |