Piedmont Natural Gas Company, Inc., a public utility company, distributes natural gas. It is also involved in the natural gas and fuel oil supply, transportation, and storage activities. The company distributes natural gas through transmission pipelines and distribution mains. It serves approximately one million residential, commercial, industrial, power generation, and municipal customers located in North Carolina, South Carolina, and Tennessee. The company was incorporated in 1950 and is based in Charlotte, North Carolina. Piedmont Natural Gas Company, Inc. is a subsidiary of Duke Energy Corporation.