TransAlta Corporation is an electrical power generation company. It operates hydro, wind and solar, natural gas-fired, and coal-fired facilities in the U.S., Canada, and Australia. The company trades in electricity and other energy-related commodities and derivatives, and operates related mining and natural gas pipeline operations. It serves municipalities, medium and large industries, businesses, and utility customers. TransAlta was founded in 1909 and is headquartered in Calgary, Canada.