Smokestacks fall as the former Nanticoke coal generating station is demolished. The station was closed in 2013 and safely demolished in 2019.Smokestacks fall as the former Nanticoke coal generating station is demolished. The station was closed in 2013 and safely demolished in 2019.

OPG marks 10 years since the closure of its last coal-fired station

  • 10 years since coal closure

One of North America's leading power generators

Ontario Power Generation (OPG) is Ontario’s leader in generating clean, safe, reliable, and low-cost power. We meet about half of the province’s energy needs through a diverse mix of generating assets consisting of hydroelectric stations, nuclear plants, solar, biomass, and natural gas. Our power is building stronger communities, helping to fight climate change, preserving ecological diversity, and bolstering economic growth.

In 2014, we helped complete one of the world’s single-largest actions to combat climate change when we closed the last of our coal-fired generating stations. The end of coal in Ontario led to cleaner air and reduced provincial greenhouse gas emissions by about 17% – the equivalent of taking seven million cars off the road. Today, Ontario’s electricity system stands as one of the cleanest grids in the world. OPG is now building on this achievement through our Climate Change Plan, which outlines our plan to become a net-zero carbon company by 2040. To reach our goals and electrify life in one generation, we are advancing new low-carbon technologies, such as Small Modular Reactors, and building partnerships with Indigenous communities to develop new clean energy projects.

In this section, learn about how OPG is powering Ontario’s clean energy future through one of the world’s most diverse generating fleets.

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Our generation by the numbers

megawatts (MW) in-service generating capacity (Mar. 31, 2024)

stations in Ontario

employees supporting Ontario's economy

clean power producer in the province

Our generation portfolio in Ontario

hydroelectric stations

nuclear stations

solar facility

biomass station

dual-fuelled oil and gas station

Atura Power combined-cycle gas turbine stations

OPG also owns a number of additional facilities in Ontario and the United States:

  • Our US hydroelectric operations — OPG wholly or jointly owns and operates 85 hydroelectric generating stations and holds minority interests in 14 hydroelectric and two solar facilities in the United States through our US-based wholly-owned subsidiary, Eagle Creek Renewable Energy.
  • Our gas-fired combined-cycle generating stations — Our subsidiary, Atura Power, is the operator of four combined-cycle gas turbine generating stations located in Ontario.
  • Bruce nuclear stations — We also own two other nuclear generating stations in Ontario that are leased to Bruce Power L.P.
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An aerial view of Darlington Nuclear Generating Station from afar.

Nuclear power

Nuclear power is virtually carbon-free, generating clean, affordable power 24/7/365. Learn what makes OPG Canada’s nuclear power leader and how this vital energy source strengthens the economy while forming the bedrock of Ontario’s electricity system. 

Generating capacity (Mar. 31, 2024): 4,850 MW
Stations: 2
2023 Output: 36.1 TWh

Low water conditions at the tailrace of Lower Sturgeon hydroelectric generating station.

Hydroelectric power in Ontario

This timeless, renewable and low-cost source of power accounts for more than one-third of OPG’s electricity production. 

Generating capacity (Mar. 31, 2024): 7,624 MW

Stations: 66

2023 Output: 34 TWh

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Our generation

All generation

Explore our interactive station map by simply selecting one of the power generation icons below:

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