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As Ontario’s largest clean electricity generator, see how our focus is on generating safe, efficient, and reliable energy.

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Our subsidiaries & partnerships are helping us improve electricity generation, storage, and distribution technology to electrify life in one generation.
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Powering Ontario
Ontario’s need for power never takes a rest and neither does OPG — we’re on the job 24 hours a day, seven days a week, powering Ontario.
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We maintain a long-term commitment to the health, safety and energy needs of Ontarians, and it shows in everything we do.
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Workers in hard hats look out from the top of an open stairway before a huge Canadian flag in a nuclear plant.

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Our role is to help build a stronger Ontario by investing in clean, affordable power and energy solutions that help grow Ontario's economy.

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Nuclear power
Nuclear power plays an important role in Ontario and OPG’s energy mix, and its critical to helping us achieving our net-zero goals.
Our power
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Our role in the system
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We build safety into every step of our energy production and about our comprehensive emergency preparedness plans for Ontarians.
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The pristine turbine hall at Darlington Nuclear Generating Station.

Darlington refurbishment project

Once complete, this project will enable production of clean, safe, low-cost, and emission-free electricity from Darlington for 30 more years.

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Darlington SMR
The Darlington site is the only location in Canada licenced for new nuclear with a completed and accepted Environmental Assessment.
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With an extensive portfolio of clean energy generation across North America, OPG can offer environmental credits in both Canada and the US.
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- Electrification services
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Community investment

The Power for Change Project was designed to give back to Ontario and to the communities where we operate, to help build a cleaner, more sustainable future for generations to come.

Ouimet Canyon Provincial Park, Thunder Bay, Ontario

Territorial acknowledgement

We respectfully acknowledge that our facilities are located within the traditional and treaty territory of Indigenous Nations and communities.

Communities

Territorial Acknowledgement
- Territorial Acknowledgement
  OPG respectfully acknowledges that the lands on which its generating stations and other assets are located are within the traditional and treaty territory of many Indigenous communities. Click to read more.
Central Ontario
- Central Ontario
  Central Ontario is home to 20 of our hydroelectric facilities, some of which, like our Sills Island Generating Station, have been part of their community for more than one hundred years.
Eastern Ontario
- Eastern Ontario
  Eastern Ontario is host to one gas-fired generating station and 15 of our hydroelectric generating stations on the St. Lawrence, Ottawa and Madawaska Rivers.
Northeastern Ontario
- Northeastern Ontario
  Northeastern Ontario contains 14 of our hydroelectric stations, including several we built or redeveloped through key partnerships with local Indigenous communities.
Northwestern Ontario
- Northwestern Ontario
  Northwestern Ontario hosts 11 of our hydroelectric stations as well as a former coal generating station that we converted to use biomass as fuel.
Southern Ontario - Durham Region
- Southern Ontario - Durham Region
  The golden horseshoe of Southern Ontario is home to key operations including our Darlington and Pickering nuclear stations in Clarington and Pickering.
Southern Ontario - Niagara Region
- Southern Ontario - Niagara Region
  The golden horseshoe of Southern Ontario is home to key operations including our iconic Sir Adam Beck hydroelectric stations in Niagara Falls.
Southwestern Ontario
- Southwestern Ontario
  Southwestern Ontario is host to our NSS - Western Waste Management Facility in Bruce County, our Eugenia hydroelectric station near Meaford, and our Nanticoke Solar Facility on the site of the former Nanticoke coal station.

Hydroelectric Water Portal (water.opg.com)

Find water level and flow information from gauges on rivers where OPG operates hydroelectric stations in Ontario.

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Watt’s New
In our revamped e-newsletter, find out how we're helping electrify Ontario while strengthening its economy, communities, and the environment.
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At our visitor centres, the public is welcomed to see how their power is made and learn about Ontario's low-carbon electricity system.
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March 15, 2022

2 min read

Pickering Nuclear Performance Report - Q4 2021 Results

Performance update

As part of our commitment to keep you informed, this report tracks performance for Ontario Power Generation’s (OPG’s) Pickering Nuclear in the areas of safety, operational and environmental performance and significant accomplishments during the fourth quarter of 2021.

4.4 TWh

Electricity production

The electrical energy generated, minus station needs

OPG’s nuclear electricity generation for Q4 of 2021 totalled 8.4 terawatt hours (TWh) compared to 9.8 TWh in 2020 in the same quarter. In Q4, Pickering Nuclear produced 4.4 TWh of electricity, which was 12 per cent of the electricity produced in Ontario.

A dial graphic indicating "white" for good performance.

78.12% UCF

Reliability

Unit capability factor

Compared to Q4 in 2020, Pickering’s Unit Capability Factor (UCF) for Q4 2021 was lower (78.12) primarily due to an increase in the number of days the station was shut down for maintenance outages.

A dial graphic indicating "green" for excellent performance.

1 spill

Environment

Spills to the environment

During Q4 2021, Pickering Nuclear recorded one spill to the environment that was reportable to a regulatory authority. Pickering Nuclear had a total of one reportable spill in 2021.

0.10 TRIF

Safety

Total Recordable Injury Frequency

Total Recordable Injury Frequency (TRIF) measures the number of injuries involving OPG employees that result in a fatality, lost time, requiring restricted work and requiring medical treatment per 200,000 hours. In Q4 2021, Pickering Nuclear recorded 0.10 injuries per 200,000 hours worked.

About OPG’s Nuclear Generating Stations

OPG owns and operates the Pickering and Darlington Nuclear Generating Stations. The two stations have a combined generating capacity of about 5,728 megawatts with Darlington Unit 1 & 3 currently in a refurbishment outage. Accounting for 22% of the electricity produced in Ontario in Q4, OPG’s nuclear units generated 8.4 terawatt hours.

Other Pickering news

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Pickering Performance Report – Q4 2021

Territorial Acknowledgement

Central Ontario

Eastern Ontario

Northeastern Ontario

Northwestern Ontario

Southern Ontario - Durham Region

Southern Ontario - Niagara Region

Southwestern Ontario