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

An aerial view of the Darlington Nuclear Generating Station.

Darlington refurbishment project

Our mission, vision & valuesAs Ontario’s largest clean electricity generator, see how our focus is on generating safe, efficient, and reliable energy.Learn MoreAbout Our ...

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
WattNext.ca
Ontario Science Centre, Ontario Tech University and OPG's energy education program aims to educate, inform, and connect Ontarians with energy careers.
Educational resources
Hydroelectric Water Portal (water.opg.com)

Careers
Investors
Reports
OPG Websites
- Initiatives
- Subsidiaries

Small modular reactors

Small but mighty - SMRs are the future of nuclear

Imagine a technology that could produce clean, low-carbon power, be factory-assembled and delivered anywhere in the world, and provide reliable, affordable energy to homes, district heating to entire communities, or power for heavy industry. That’s the promise of small modular reactors (SMRs), the next-generation of nuclear technology that is set to be deployed by Ontario Power Generation (OPG) right here in Ontario – the first place to do so in North America.

Ontario is leading North America's clean energy future

On May 8, 2025, the Ontario government announced approval for OPG to begin construction on the first of four small modular reactors at the Darlington nuclear site.

Upcoming events

Dec

Electrifying Education Presentations

Sessions available until June 30, 2026

In person

A child at a desk in a classroom raises his hand to ask a question.

Big things start small

Small modular reactor technology will have a big impact in the global fight against climate change

OPG's WattNext

Produced in partnership with the Ontario Science Centre and Ontario Tech University, this new education program provides answers to energy questions big and small.

Learn Watt's Next for Small Modular Reactors at:

A digital rendering depicting OPG's new Small Modular Reactor at Darlington.

Darlington New Nuclear Project

The Darlington site is the only location in Canada licenced for new nuclear with a completed and accepted Environmental Assessment.

X-energy

We are also working with X-energy to pursue opportunities to deploy the Xe-100 SMR for industrial applications in Canada. These SMRs could help heavy industry reach climate change goals by using clean, safe electricity and high temperature steam efficiently to power production facilities and decarbonize industrial processes.

Advancing SMRs in Alberta

Capital Power and OPG are working together to jointly assess the potential to pursue deployment of grid-scale SMRs as a reliable, safe, and clean energy solution for Alberta.

Related news

In April, the LR 12500-1.0 crane completed a major lift for the G7’s first grid-scale SMR, as it hoisted the close to 2.1-million-pound Basemat module, the foundation of the reactor.

Our stories · 8 min read

Meet the colossal crane doing the heavy lifting for the first SMR in the G7

At OPG’s Darlington New Nuclear Project site, the largest crawler crane in Canada is doing some important lifting.

Our stories · 8 min read

Laying the foundation for the G7’s first Small Modular Reactor

At the Darlington New Nuclear Project site, OPG has safely completed a monumental lift for the construction of the G7’s first SMR fleet.

News update · 1 min read

OPG and NYPA to collaborate on new nuclear innovation

OPG and the New York Power Authority have signed an agreement to collaborate on nuclear innovation.

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A view of Bowmanville, Ontario from above, showing train tracks.

A Conference Board of Canada report estimates that building and operating a fleet of four SMRs will contribute approximately $15.3 billion to Canada’s GDP.A Conference Board of Canada report estimates that building and operating a fleet of four SMRs will contribute approximately $15.3 billion to Canada’s GDP.

Territorial Acknowledgement

Central Ontario

Eastern Ontario

Northeastern Ontario

Northwestern Ontario

Southern Ontario - Durham Region

Southern Ontario - Niagara Region

Southwestern Ontario

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