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 oversight and reporting

Ontario Power Generation (OPG) is committed to producing reliable, clean energy according to the highest standards of safety.

Explore how we work with partners and regulatory bodies to help maintain this high level of safety and security for the benefit of all Ontarians.

Oversight agencies

OPG works closely with our many partners to protect the environment. These partners include:

Local conservation authorities
The Regional Health Department
Ministry of the Environment, Conservation, and Parks
Ministry of Natural Resources and Forestry
The Canadian Nuclear Safety Commission (CNSC)

These agencies provide oversight to Durham’s nuclear plant operations.

As part of our commitment to transparency, OPG publicly reports its emission rates four times each year. Learn more about OPG’s Regulatory Reporting.

Excellence in Nuclear Operations is a key focus at Ontario Power Generation. We remain committed to providing clean energy while protecting the public, the environment, and our staff.

Steve Gregoris

Chief Nuclear Officer

Assessments and monitoring

Learn more about and read the reports that we provide our communities and partners as part of our commitment to safe and transparent operations.

Annual safety assessment

The Canadian Nuclear Safety Commission (CNSC) has given OPG’s Pickering and Darlington nuclear stations its highest possible safety ratings.

The 2017 Nuclear Safety Report gave Pickering Nuclear its best-ever rating for the third consecutive year, while Darlington Nuclear achieved the highest standard for the ninth year in a row.

Combined, the plants provide about 30% of the electricity used in the Ontario.

Darlington’s high rating is the strongest continuous performance by any Canadian nuclear power plant and is recognized by the World Association of Nuclear Operators (WANO) as among the top performing nuclear power plants in the world.

OPG and Ontario are investing $12.8 billion in refurbishing the Darlington Nuclear Generating Station, and, as one of Canada’s largest clean power projects, it will preserve about 3,000 jobs and provide 30-plus years of clean, reliable base load power at a cost lower than other alternatives considered.

OPG also plans to continue the operation of Pickering Nuclear until 2024 to ensure a reliable, clean source of base load electricity during refurbishment.

Independent studies show that Pickering can operate reliably and safely to 2024 and that doing so would avoid 17 million tonnes of greenhouse gas emissions released into the atmosphere. That’s like taking 3.4 million cars off Ontario roads.

Continued operations will:

Save consumers $600 million dollars.
Protect 4,500 jobs in Durham Region.
Reflect public support: 75% of Ontarians support the refurbishment of Darlington, and 80 percent supporting the Pickering extension.

Explore the CNSC 2015 Integrated Safety Assessment.

OPG Radiation Monitoring Program

OPG is committed to safeguarding against airborne and waterborne effluents from the Pickering and Darlington nuclear stations.

OPG conducts continuous radiological environmental monitoring programs (REMP) in the vicinity of our power stations to determine the radiological impact to the public from the operation of these stations.

This data is compiled and provided to the public in annual reports.

Our extensive monitoring programs include assessing concentrations of radionuclides in:

Air, water, soil, sediments.
Vegetation and fish samples.
The milk from local dairy cows.

Samples are taken near Darlington and Pickering, and at key provincial locations, to determine naturally occurring radiation levels in areas away from the influence of nuclear stations.

Preparation of these annual reports is a regulatory requirement of the Canadian Nuclear Safety Commission, and you can explore our recent reports to the public as required by the CSNC.

Ongoing transparency

Explore our many other reports.

Home
Power generation
Our commitment to safety
Nuclear safety and emergency preparedness
Regulatory oversight

Territorial Acknowledgement

Central Ontario

Eastern Ontario

Northeastern Ontario

Northwestern Ontario

Southern Ontario - Durham Region

Southern Ontario - Niagara Region

Southwestern Ontario