Ontario Hydro
Former provincial Crown corporation for electricity in Ontario, split in 1999.
Last updated August 25, 2026
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Overview
Ontario Hydro was a Crown corporation in Ontario, Canada, established in 1906 as the Hydro-Electric Power Commission of Ontario. It was responsible for electricity generation, transmission, and distribution, serving as the primary electricity provider in the province. In 1999, the provincial government restructured the electricity market, splitting Ontario Hydro into several entities, including generation, transmission, and independent market operator companies.
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