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Learn about what we do and how we operate.
Toronto Hydro owns and operates an electricity distribution system that delivers electricity to approximately 787,000 customers in the city of Toronto. We serve the largest city in Canada and distribute approximately 18 per cent of the electricity consumed in the province of Ontario.
We're committed to delivering excellent customer service, providing a safe and reliable supply of electricity, and delivering long-term value to the City of Toronto.
Toronto Hydro Corporation is a holding company which wholly owns two subsidiaries: Toronto Hydro-Electric System Limited and Toronto Hydro Energy Services Inc.
The Corporation is responsible for supervising the operations of its subsidiaries and providing them with corporate, management services and strategic direction.
Toronto Hydro-Electric System Limited (commonly referred to as Toronto Hydro) owns and operates the electricity distribution system for the city of Toronto. We have approximately 787,000 customers in Toronto and distribute approximately 18 per cent of the electricity consumed in Ontario.
Toronto Hydro is responsible for the following services:
Toronto Hydro Energy Services Inc. is responsible for providing streetlighting and expressway lighting services in the city of Toronto.
The journey of getting power to your home or business involves electricity generation, transmission and distribution. Here's what's involved at each stage of the process:
| Category | Figure |
|---|---|
| Customers | 787,000 |
| Electricity delivered | 23,373 (GWh) |
| Poles | 182,640 |
| Overhead wires | 15,406 (circuit km) |
| Underground wires | 13,681 (circuit km) |
| Primary switches | 17,160 |
| Distribution transformers | 61,140 |
| Control centre | 1 |
| Operations centres | 4 |
| Employees | 1,190 |
Note: Figures listed above are approximate.
| Power source | Percentage of supply mix[1] |
|---|---|
| Nuclear energy | 55.3% |
| Water power | 23.3% |
| Wind | 9% |
| Natural gas [1] | 8.1% |
| Solar PV | 2.5% |
| Bioenergy [2] | 0.5% |
| Non-contracted [3] | 1.2% |
Note: Figures may not add to 100% due to rounding. Also, figures do not account for the sale and retirement of Clean Energy Credits (CECs).
[1] Includes Lennox and dual fuel (natural gas/bioenergy) consistent with the Independent Electricity System Operator (IESO).
[2] IESO’s embedded generation data set combines biomass and gas.
[3] Non-contracted represents a variety of fuel types that the IESO is unable to categorize due to a lack of information from Local Distribution Companies (LDCs).