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Power Plants in Canada

Canada has 452 power plants mapped on the OverWatts open energy atlas — the 9th-largest fleet of the 155 countries that hold any, and 2% of the world's mapped total. Of these, 287 operating and 143 under construction or proposed. Operating generation capacity totals 137 GW across 287 utility-scale plants of 100 MW and above. The largest is Bruce nuclear power plant (6.9 GW).

The largest owner-operators are Hydro Quebec (50), Ontario Power Generation Inc (35) and EDF Renewables (19) — Hydro Quebec alone is named on 11% of them. Half of Canada's power plants in service predate 2001 (median commissioning year of the 285 with a known date), 54 came online in the past decade and the oldest still listed is Shawinigan 2 hydroelectric plant, dating from 1911. 143 are in the pipeline, led by Gull Island hydroelectric plant (2.3 GW), under construction. They account for 24% of every energy asset OverWatts maps in Canada.

See them on the map →Power Plants worldwide →
452
Power Plant in Canada
#9
of 155 countries
137 GW
Operating capacity
143
In construction / proposed

Operating generation capacity by fuel

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Largest power plants in Canada

Who owns Canada's power plants

Counts an asset once per company named as its owner or operator; a joint venture counts for each partner.

When they were built

Median commissioning year 2001 · oldest Shawinigan 2 hydroelectric plant (1911) · newest Big Sky Solar Project (2025) · 285 of 452 carry a start date

Under construction & proposed

How Canada compares · power plants by country

Frequently asked

How many power plants are there in Canada?
OverWatts maps 452 power plants in Canada — 2% of the world's mapped total, the 9th-largest national fleet of the 155 countries with any.
What is the largest power plant in Canada?
Bruce nuclear power plant, at 6.9 GW, operated by Bruce Power.
How much power-generation capacity do Canada's power plants have?
About 137 GW operating across 287 plants, with a further 68.4 GW under construction or proposed. That covers utility-scale sites of 100 MW and above, so it sits below national installed capacity wherever distributed generation is large.
Who owns the power plants in Canada?
Hydro Quebec is named as owner or operator on the most — 50 of 452 (11%). Next are Ontario Power Generation Inc (35), EDF Renewables (19) and Saskatchewan Power Corp (16).
How old are Canada's power plants?
The median commissioning year is 2001, across the 285 in service with a known start date. The oldest still listed is Shawinigan 2 hydroelectric plant (1911); 54 came online in the past ten years.
What new power plants are being built in Canada?
143 projects are under construction or proposed. The largest are Gull Island hydroelectric plant (2.3 GW), Greenlight Electricity Centre (1.9 GW) and Beacon AI Centers Indus Project (1.5 GW).

Other asset classes in Canada

Oil & Gas Field 1,165Pipeline 88LNG Terminal 48Coal / Uranium Mine 43Interconnector 22Cement Plant 20Chemical Plant 17Iron Ore Mine 11Export Terminal 9Iron & Steel Plant 8Refinery 7Grid Storage 4

Power Plants in other countries

China 11,537United States 3,831India 1,675Brazil 879Spain 653Australia 615Philippines 489Russia 461Vietnam 392Japan 387Germany 335Mexico 311