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About Toronto
Hydro-Electric System

Toronto Hydro–Electric System Limited is the regulated "wires" affiliate of Toronto Hydro Corporation and is the largest municipal electric distribution utility in Canada.

We ensure the safe and reliable delivery of electrical power to approximately 709,000 residential, commercial and industrial customers across the City of Toronto. This represents approximately 18 per cent of electricity consumers in the province of Ontario.

We plan, maintain and operate Toronto's electrical distribution system infrastructure safely, efficiently and in an environmentally responsible manner. We deliver consistent and high quality customer service.

We also design and deliver electricity Conservation and Demand Management (CDM) programs.