AltaGas Ltd. is a North American energy infrastructure company based in Calgary, Alberta. Founded in 1994, it has evolved from a midstream natural gas business into a diversified energy provider operating in Canada and the United States. The company employs around 3,000 people and serves approximately 1.6 million customers through its regulated natural gas utilities.

AltaGas operates in four main segments: Midstream, Utilities, Power, and Corporate. The Midstream segment includes natural gas processing, logistics, and export facilities, connecting producers to both domestic and international markets. The Utilities segment manages regulated natural gas distribution in several U.S. states, delivering clean energy to homes and businesses. The Power segment generates electricity primarily in California, supporting the company's commitment to clean energy solutions. Overall, AltaGas is well-positioned to meet the growing demand for affordable and reliable energy.