W. Harris Marple

The American Gas Association represents over 200 energy companies that provide natural gas service to 180 million Americans. The private company is based in Washington. The American company's natural gas utilities are committed to reducing greenhouse gas emissions through new and modernized infrastructure and advanced technologies that maintain reliable, resilient, and affordable energy service choices for consumers. The company advocates on behalf of its member natural gas distribution utilities before Federal agencies in the area of energy market regulation.

Columbia Gas Transmission Corp. operates natural gas pipeline network serving hundreds of communities. It also owns and operates underground natural gas storage systems. The company is headquartered in Charleston, VA.

Columbia Gulf Transmission operates pipelines that delivers natural gas to customers in Louisiana, Mississippi, Kentucky and Tennessee. It also provides electric power services for power generation plants. The company was founded in 1954 and is headquartered in Houston, TX.