Dominion is one of the nations largest producers and transporters of energy, with a portfolio of more than 27,500 megawatts of generation, 12,000 miles of natural gas transmission, gathering and storage pipeline and 6,00......Dominion is one of the nations largest producers and transporters of energy, with a portfolio of more than 27,500 megawatts of generation, 12,000 miles of natural gas transmission, gathering and storage pipeline and 6,000 miles of electric transmission lines. Dominion operates the nations largest natural gas storage system with 942 billion cubic feet of storage capacity and serves retail energy customers in 12 states. Corporate headquarters are in Richmond, Va.Dominions strategy is to be a leading provider of electricity, natural gas and related services to customers in the energy-intensive Midwest, Mid-Atlantic and Northeast regions of the U.S., a potential market of 50 million homes and businesses where 40 percent of the nations energy is consumed.