TransAlta Corporation owns, operates, and develops a diverse fleet of electrical power generation assets in Canada, the United States, and Australia. It operates through six segments: Hydro, Wind and Solar, North American Gas, Australian Gas, Alberta Thermal, and Centralia. The company owns and operates hydro, wind and solar, natural gas-fired, and coal-fired facilities. It also engages in wholesale trading of electricity and other energy-related commodities and derivatives; and related mining operations and natural gas pipeline operations. The company serves municipalities, medium and large industries, businesses, and utility customers. TransAlta Corporation was founded in 1909 and is headquartered in Calgary, Canada.