TransAlta Corporation
TransAlta Corporation (formerly Calgary Power Company, Ltd.) is an electricity power generator and wholesale marketing company headquartered in Calgary, Alberta, Canada. It is a privately owned corporation and its shares are traded publicly. It operates 76 power plants in Canada, the United States, and Australia. TransAlta operates wind, hydro, natural gas, and coal power generation facilities. The company has been recognized for its leadership in sustainability by the Dow Jones Sustainability North America Index, the FTSE4Good Index, and the Jantzi Social Index. TransAlta is Canada's largest
Company
TAC, TACPF, TRNTF, TSLTF- Industry
- Electric Services
- Exchange
- NYSE, OTC, OTC, OTC
- Latest filing
- 6-K · 2026-06-04
via SEC EDGAR
Key dates
- Inception
- 1911
via Wikidata · CC0
Wikidata facts
- Instance of
- public company
- Country
- Canada
- Headquarters
- Calgary
- Industry
- electricity generation
Article
13 sectionsContents
- History
- Ghost Reservoir
- Controversies
- Hydro facilities in British Columbia
- Energy generation summary
- Leadership
- President
- Chairman of the Board
- See also
- References
- Citations
- Sources
- External links
TransAlta Corporation (formerly Calgary Power Company, Ltd.) is an electricity power generator and wholesale marketing company headquartered in Calgary, Alberta, Canada. It is a privately owned corporation and its shares are traded publicly. It operates 76 power plants in Canada, the United States, and Australia. TransAlta operates wind, hydro, natural gas, and coal power generation facilities. The company has been recognized for its leadership in sustainability by the Dow Jones Sustainability North America Index, the FTSE4Good Index, and the Jantzi Social Index. TransAlta is Canada's largest investor-owned renewable energy provider.
TransAlta operated Canada's largest surface strip coal mine from 1970 until 2021 through its subsidiary company Sunhills Mining. The 12,600-hectare mine produced 13 million tonnes of thermal grade coal a year. The company announced that it would decommission the Highvale mine by 2021.