WGL Holdings Inc was established on November 1, 2000 as a Virginia corporation. The Company through its wholly owned subsidiaries, sells and delivers natural gas and provides energy-related products and services to customers mainly in the District of Columbia and the surrounding metropolitan areas in Maryland and Virginia, though its non-utility segments now provide various energy services in twenty-nine states. It main segments include Regulated Utility, Retail Energy-Marketing, Commercial Energy Systems and Midstream Energy Services. The regulated utility segment consists of Washington Gas and Hampshire. Washington Gas is a regulated public utility that sells and delivers natural gas to retail customers in accordance with tariffs approved by regulatory commissions in the District of Columbia and adjoining areas in Maryland, Virginia and several cities and towns in the northern Shenandoah Valley of Virginia. Hampshire owns full and partial interests in underground natural gas storage facilities, including pipeline delivery facilities located in and around Hampshire County, West Virginia, and operates those facilities to serve Washington Gas, which purchases all of the storage services of Hampshire. The retail energy-marketing segment consists of the operations of WGEServices, which competes with regulated utilities and other unregulated third party marketers to sell natural gas and/or electricity directly to residential, commercial and industrial customers in Maryland, Virginia, Delaware, Pennsylvania and the District of Columbia. The commercial energy systems segment consists of the operations of WGESystems, WGSW and the results of operations of affiliate owned commercial solar projects. The Midstream Energy Services segment, which consists of the operations of WGL Midstream, engages in developing, acquiring, managing and optimizing natural gas storage and transportation assets. The Company is subject to federal, state and local laws and regulations related to environmental matters.