TransAlta Corporation specializes in the ownership, operation, and expansion of a diverse array of electricity generation facilities, with a geographical presence spanning Canada, the United States, and Australia. The company's activities are organized into four key divisions: Hydro, Wind and Solar, Gas, and Energy Transition. Within its portfolio, TransAlta operates plants powered by hydroelectric, wind, solar, natural gas, and even coal. Beyond generating power, TransAlta is active in the wholesale trading of electricity, energy commodities, and financial derivatives. Its operations also encompass related mining ventures and the management of natural gas pipelines. The firm caters to a broad spectrum of clients, including municipalities, various industrial and commercial enterprises, and other utility providers. Founded in 1909, TransAlta's corporate headquarters are situated in Calgary, Canada.