Brian F. Bierbach

Apache Corp. operates as an energy company, which engages in the exploration, development, and production of natural gas, crude oil, and natural gas liquids. The company was founded by Truman Anderson, Raymond Plank, and Charles Arnao on December 6, 1954 and is headquartered in Houston, TX.

Cinergy Corp. used to supply electricity and gas. It also developed, owned and operated electric generation for large energy consumers, municipalities, utilities and industrial facilities. The company was located in Cincinnati, OH.

ONEOK Partners LP engages in gathering, processing, storage, and transportation of natural gas. The company was founded in 1993 and is headquartered in Tulsa, OK.

Dynegy, Inc., a holding company provides electricity, natural gas and natural gas liquids to markets and customers throughout the United States through its subsidiaries. The company owns and operates a diverse portfolio of assets, including power plants and gas processing plants. It provides wholesale power to utilities, cooperatives, municipalities, and commercial and industrial customers. It gathers and processes natural gas, and fractionates, stores, transports, and markets natural gas liquids. The company was incorporated in the state of Illinois in 1999 and is based in Houston, Texas.

Part of Enron Dissolution Corp., Enron North America Corp gathers, transports, and markets natural gas. The company is based in Houston, TX.

Part of High Point Infrastructure Partners LLC, Third Coast Midstream Holdings LLC is a company that provides investment services. The company is based in Denver, CO. Third Coast Midstream Holdings was acquired by High Point Infrastructure Partners LLC on April 15, 2013. Louis J. Dorey has been the CEO of the company since 2019.

Part of Coterra Energy, Inc., Washington Energy Resources Co. is an oil and gas concern. Washington Energy Resources was acquired by Coterra Energy, Inc. from Washington Energy Co. on February 28, 1994 for $167 million.

Cinergy Canada, Inc. provides energy management services. The company is headquartered in Calgary, Canada.