Columbia Gas Transmission knows how to get it in gear when it comes to natural gas delivery. The company, a subsidiary of NiSource, operates a 12,000-mile long natural gas pipeline network. Columbia Gas Transmission moves, on average, about 3 billion cu. ft. of natural gas per day to customers (72 local distribution companies and several hundred gas end-users in 10 Northeastern, Mid-Atlantic, and Southern US states). The company has 600 billion cu. ft. of natural gas storage capacity, including 37 underground storage fields in West Virginia, Ohio, Pennsylvania, and New York.