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 partnerships & 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

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.

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.

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.

Rough waters in the tailrace from Barrett Chute hydroelectric station.

Water system data portal

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

News & resources

Net-Zero News
A quarterly round-up of stories, news and profiles that highlight our best. See how we’re electrifying life in one generation.
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
Water safety
Our commitment to public safety includes making sure people know about the dangers around our hydro stations and dams.
Water system data portal

Careers
Investors
Reports
OPG Websites

Regulatory reporting

Commitment to reporting

Ontario Power Generation (OPG) reports to regulatory bodies to ensure safe oversight and management of our facilities, including:

Federal

Canadian Nuclear Safety Commission (CNSC): All nuclear construction, equipment, safety systems, security, operating limits, licences, decommissioning, and waste management are subject to CNSC approval.
Environmental legislation, which includes the Canadian Environmental Protection Act, the Fisheries Act, Canadian Nuclear Safety Act and others.

Provincial

Ontario Energy Board (OEB): OPG’s economic regulator who approves our regulated payments.
Provincial and municipal legislation: including the Ontario Energy Board Act, the Electricity Act, the Environmental Protection Act, the Ontario Water Resources Act, and the Environmental Assessment Act, etc.
Independent Electricity System Operator (IESO) ensures compliance with contract requirements and market rules.

A female worker in a hard hat uses a tablet computer near a electrical components.

Regulatory oversight

Learn about the many regulatory bodies that help govern and hold OPG’s nuclear operations to the highest safety standards.

Water Management Plan - Implementation Reports

Implementation Reporting reviews the Effectiveness Monitoring and Compliance Monitoring undertaken in a five-year period for the associated Water Management Plan, and assesses any new or continued efforts to support adaptive management. It is a regulatory requirement of the Ministry of Natural Resources and Forestry Lakes and Rivers Improvement Act.

Latest performance reports

Environmental and performance reports

Environmental Monitoring Program (EMP) Reports

2022 EMP Report (PDF)
2021 Results of EMP for WWMF (PDF)
2021 EMP Report (PDF)
2020 EMP Report (PDF)
2020 Results of EMP for WWMF (PDF)
2019 EMP Report (PDF)
2019 Results of EMP for WWMF (PDF)

For older reports, visit the OPG Document Archive.

Groundwater Monitoring Reports

Impingement Monitoring Reports

Environmental Emissions Data Reports

For older reports, visit the OPG Document Archive.

Pickering Performance Reports

For older reports, visit the OPG Document Archive.

Darlington Performance Reports

For older reports, visit the OPG Document Archive.

Nuclear Waste Management Facility Performance Reports

For older reports, visit the OPG Document Archive.

Environmental Risk Assessment Reports

OEB reporting

In accordance with OPG’s 2022-2026 Payment Amounts proceeding, OPG is required to file certain reports with the OEB on a quarterly or annual basis that are to be posted publicly on OPG’s website.

The sections below provide the reporting requirements. Reports will be uploaded as they are filed with the OEB.

Nuclear unit capability factors

Hydroelectric availability

Hydroelectric surplus baseload generation reporting

2022 Hydroelectric SBG Reporting (PDF)

Full-time equivalent information

2022 OPG FTE Reporting (PDF)

Capital in-service additions and construction work in progress

2022 OPG CIP and In-service (PDF)

Annual regulatory return

2022 Actual Regulatory Return (PDF)

Nuclear liability expenses

2022 Nuclear Liabilities (PDF)

Hydroelectric performance

2022 Regulated Hydroelectric Performance Scorecard (PDF)

Nuclear performance

Darlington refurbishment report

Deferral and variance account balances

Nuclear safety oversight

OPG’s nuclear safety regulator is the Canadian Nuclear Safety Commission (CNSC).

Under the Nuclear Safety and Control Act (NSCA), the CNSC is responsible for:

Regulating all nuclear facilities and nuclear-related activities in Canada, and
Granting station operating licences, which set out the regulations and requirements that stations must operate under.

Oversight of OPG

The CNSC has a presence at each nuclear station in Canada, with continuous access to inspect our stations and review our activities and report to the CNSC Tribunal, an appointed body of individuals who provide further oversight on nuclear activities.

OPG must notify the CNSC of activities which meet the criteria for 'Event Reports', provided to CNSC staff when an activity meets the thresholds set out by the Commission’s regulation document 3.1.1, available below.

Event Reports number fewer than 100 per year, but receive intense scrutiny for causes, corrective action and resolution.

A handful of ‘Event Reports’ may warrant further review by the CNSC Tribunal at one of their regularly held public meetings, where root cause, remedial actions and resolution are discussed in a public forum.

Learn more at www.nuclearsafety.gc.ca/eng

Regulatory event reports

Learn more about how OPG tracks and trends the events reported to the CNSC that occur at our nuclear plants.

A large collection of orange hard hats hanging on a wall.

Special interest station updates

Learn more about recent station operational events that OPG reports to the public as part of our commitment to transparency.