Our mission, vision & values

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

About

Our subsidiaries
Our subsidiaries & partnerships are helping us improve electricity generation, storage, and distribution technology to electrify life in one generation.
Who we are
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.
What we do
Public safety
We maintain a long-term commitment to the health, safety and energy needs of Ontarians, and it shows in everything we do.
Our commitments in action
Code of Business Conduct
We operate according to a Code of Business Conduct that ensures safety, integrity and efficiency for Ontario.
Governance & regulation

Workers in hard hats look out from the top of an open stairway before a huge Canadian flag in a nuclear plant.

Our role in the system

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

Power generation

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
Educational resources
We support students and educators by providing learning resources developed specifically for teachers, young people and schools.
Our role in the system
Nuclear safety and emergency preparedness
We build safety into every step of our energy production and about our comprehensive emergency preparedness plans for Ontarians.
Our commitment to safety
- Nuclear safety and emergency preparedness
- Water safety

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.

Projects & services

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

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.

News & resources

Watt’s New
In our revamped e-newsletter, find out how we're helping electrify Ontario while strengthening its economy, communities, and the environment.
Newsroom
Visitor centres
At our visitor centres, the public is welcomed to see how their power is made and learn about Ontario's low-carbon electricity system.
Educational resources
Hydroelectric Water Portal (water.opg.com)

Careers
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Reports
OPG Websites
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March 18, 2025

8 min read

Nuclear Waste Management Facility Performance Report - Q4 2024 Results

Accent: necjrzis97tu

Performance update

As part of our commitment to keep you informed, this report tracks performance for Ontario Power Generation (OPG)’s Nuclear Waste Management Facilities in the areas of safety, operations, and the environment. It also summarizes significant accomplishments achieved during the fourth quarter of 2024.

OPG operates three nuclear waste facilities in Darlington, Pickering and Bruce County. Used fuel is removed from the reactors and cooled inside the station’s fuel bay. Low and Intermediate Level waste is processed and then stored at OPG’s Western Waste Management Facility.

0.0 TRIF

A dial graphic indicating "green" for excellent performance. 0.0 incidents

Safety

Total Reportable Injury Frequency (TRIF)

TRIF is a measure of the number of injuries involving OPG employees that result in a fatality, lost time, requiring restricted work or requiring medical treatment per 200,000 hours worked. The current 12 month rolling average for TRIF sits at 0.0, below the year-to-date target of 0.47. The year-end target is not to exceed 0.47.

Transportation Safety

The transportation of waste to our Western facility from Darlington, Pickering and Bruce Power is managed by experienced and skilled drivers. During Q4, all shipments were made safely and accident-free and the fleet travelled 140,316 additional kilometres. A total of 603,892 kilometres were travelled in 2024.

A dial graphic indicating "green" for excellent performance.

0 spills

Environment

Spills to the environment

In this quarter, there were no spills to the environment at our waste facilities that were reportable to a regulatory authority. For detailed environmental information, please refer to the environmental data reports available on our Regulatory Reporting page.

PWMF - 80

DWMF - 57

WWMF - 115

Operational Performance

Pickering Waste Management Facility (PWMF)

A total of 10 Dry Storage Containers (DSC) were transferred in Q4, which totals 80 of the 80 year-end transfer target for 2024

Darlington Waste Management Facility (DWMF)

A total of 17 Dry Storage Containers (DSC) were transferred during Q4, totalling 57 and meeting the 2024 year-end transfer target of 57.

Western Waste Management Facility (WWMF)

A total of 28 Used Fuel Dry Storage Containers (DSC) were transferred in Q4, totalling 115, surpassing the 2024 year-end transfer target of 110.

4,172 m³

A dial indicating 'red' for poor performance. 8.69 m³

Waste Minimization

Solid waste

In Q4, a total of 4,172 cubic metres of low-level waste was processed through incineration. This was below the year-to-date target of 5,795 cubic metres. The goal was to process 5,795 cubic metres by year-end.

Liquid waste

In Q4, a total of 8.69 cubic metres of liquid waste was processed through incineration. This was below the year-to-date target of 25 cubic metres. The goal was to process 25.0 cubic metres of liquid waste by year-end.

Questions?

Please contact Jennifer Knox, Director - Nuclear Stakeholder Relations, through the form below.

Accent: pu04qr16wefz

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Nuclear Waste Management Facility Performance Report – Q4 2024

Territorial Acknowledgement

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