WGL Holdings, Inc. (WGL Holdings), is a United States of America-based public utility holding. Through its wholly owned subsidiaries, it sells and delivers natural gas and provides energy-related products and services to customers primarily in the District of Columbia and the surrounding metropolitan areas in Maryland and Virginia. Promotes the efficient use of clean natural gas and renewable energy to improve the environment for the benefit of customers, investors, employees, and the communities it serves. The Company’s business segments include Regulated Utility, Retail Energy-Marketing, Commercial Energy Systems and Midstream Energy Services. WGL Holdings owns all of the shares of common stock of Washington Gas, Washington Gas Resources, Hampshire Gas Company (Hampshire) and Crab Run Gas Company (Crab Run). Washington Gas Resources owns four unregulated subsidiaries that include WGEServices, WGESystems, and WGL Midstream.