Dominion Resources, Inc. (Dominion) is a holding company. The Company is a producer and transporter of energy. The Company is a provider of electricity, natural gas and related services to customers in the eastern region of the United States. The Company operates through three segments: Dominion Virginia Power (DVP), Dominion Generation and Dominion Energy. The Company's portfolio of assets includes approximately 24,300 megawatt (MW) of generating capacity; 6,500 miles of electric transmission lines; 57,300 miles of electric distribution lines; 12,200 miles of natural gas transmission, gathering and storage pipeline, and 22,000 miles of gas distribution pipeline, exclusive of service lines. The Company also operates underground natural gas storage systems, with approximately 933 billion cubic feet (bcf) of storage capacity. Dominion's operations are conducted through various subsidiaries, including Virginia Power and Dominion Gas.