Northern Natural Gas Company is a natural gas pipeline company headquartered in Omaha, Nebraska. The company operates a pipeline system that spans more than 11,000 miles, stretching from Southern Texas to Michigan's Upper Peninsula. The pipeline system transports natural gas to customers in the Midwest and Rocky Mountain regions of the United States. Northern Natural Gas Company is a subsidiary of Berkshire Hathaway Energy, which is a subsidiary of Berkshire Hathaway. Berkshire Hathaway Energy is a holding company that owns a number of energy-related subsidiaries, including PacifiCorp, MidAmerican Energy Company, and NV Energy.