TCP is an energy company, like pipeline energy https://www.marketbeat.com/stocks/NYSE/TCP/

TC PipeLines, LP acquires, owns, and participates in the management of energy infrastructure businesses in North America. The company has interests in eight natural gas interstate pipeline systems that transport approximately 10.9 billion cubic feet per day of natural gas from producing regions and import facilities to market hubs and consuming markets primarily in the Western, Midwestern, and Eastern United States. It serves large utilities, local distribution companies, natural gas marketers, producing companies, and other interstate pipelines, including affiliates. TC PipeLines GP, Inc. operates as a general partner of the company. TC PipeLines, LP was founded in 1998 and is based in Houston, Texas.