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
Investors
Reports
OPG Websites
- Initiatives
- Subsidiaries

Building North America’s first Small Modular Reactor
Watt’s New

Check out Watt’s New at OPG in our all-new e-newsletter experience.
Exploring new nuclear near Port Hope

OPG will begin working with the Town of Port Hope and First Nations to explore new nuclear generation at our Wesleyville site.
2023 Integrated ESG and Annual Report
Generation for generations

See how the refurbishment of OPG’s Pickering Nuclear Generating Station will provide carbon-free power for generations to come.

Building North America’s first SMR
Watt’s New
Exploring new nuclear
ESG and Annual Report
Generation for generations

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Upcoming events

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Our subsidiaries

Powering the electric future

As one of North America’s largest, most diverse electricity generators, Ontario Power Generation (OPG) invests in local economies and employs thousands of people across Ontario and the United States. Together with our family of companies, we are leading the development of new clean technologies, advancing electrification initiatives, and refurbishing our existing assets – all to power the demands of a growing clean economy for decades to come.

We delivered one of the world's single-largest climate change actions by closing our coal stations, but that does not make us complacent. It makes OPG hungry to do even more to power Ontario’s homes and businesses – and build on our province’s reputation as a clean-energy powerhouse.

Nicolle Butcher

President and CEO, OPG

Electrify your career

Calling all innovators, changemakers, disruptors, and leaders. Be part of a once-in-a-century energy transition and help us electrify life.

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Key projects and initiatives

A conceptual rendering of the BWRX-300 SMR plant by GE Hitachi Nuclear Energy.

The future of nuclear

OPG is building North America's first small modular reactor (SMR) at our Darlington site. A total fleet of four SMRs will provide 1,200 new megawatts of clean, reliable, safe nuclear power. That's enough to power about 1.2 million homes for decades.

OPG will be the first power generator in North America to build a small modular reactor (SMR).

A crane moves a large battery into place at Hagersville.

Innovative energy storage

From pumped hydro to batteries to hydrogen, we're on the leading edge of new energy storage technologies that are critical to electrifying life with clean, reliable power.

From pumped hydro to batteries to hydrogen, OPG is on the leading edge of new energy storage technologies.

Hydrogen renewable energy production pipeline - hydrogen gas for clean electricity solar and windturbine facility.

A hydrogen powerhouse

With our abundant supply of clean electricity, OPG’s subsidiary, Atura Power, is pioneering the production of green hydrogen to help power the energy transition while building an entirely new, made-in-Ontario cleantech industry.

OPG’s subsidiary, Atura Power, is pioneering the production of green hydrogen to help power the energy transition.

The garage, service area of parked TTC Buses. Operated by the Toronto Transit Commission. City public transit. Transportation buses parked in the special area.

Powering the electric revolution

To enable net-zero by 2050, OPG and our subsidiaries are investing in electrifying transit systems, and working with businesses to electrify fleets.

By 2050, Ontario will need to be fully electrified and that means investing in EV charging networks, electrifying transit systems, and working with businesses to electrify fleets.

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Our stories

Cambium Indigenous Professional Services (CIPS) has worked to create new habitats for species at risk at OPG's Darlington New Nuclear Project site, including these bat structures.

Our stories · 10 min read

Indigenous company playing key role in protecting biodiversity at OPG’s Darlington SMR site

Indigenous-owned and operated Cambium Indigenous Professional Services has been helping to protect biodiversity at OPG’s Darlington New Nuclear Proj...

Students make some final adjustments to their robots at the 2025 Skills Ontario Competition.

Our stories · 9 min read

Students show off their best at 2025 Skills Ontario Competition

A whole lot of brain-power was on display at this year’s Skills Ontario Competition in Toronto.

The Darlington New Nuclear Project site, future home of North America's first Small Modular Reactor.

Our stories · 10 min read

OPG ready to begin building North America’s first Small Modular Reactor

OPG has received the green light to build North America’s first commercial, grid-scale Small Modular Reactor.

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OPG and Ontario government representatives announce CNSC approval to construct the first SMR at Darlington.

OPG reports 2025 first quarter financial results

Today, OPG reported its financial and operating results for Q1 2025 with reference to the recent CNSC approval to construct a Darlington SMR.

Watt's New | April 2025

Introducing OPG’s inaugural issue of Watt’s New. In this revamped e-newsletter experience, learn more about how OPG is electrifying life.

Drone photography. Ecosystem. Biodiversity

OPG issues $1 billion in green bonds and welcomes Cedar Leaf Capital to its dealer syndicate

The Green Bonds will be used to finance eligible low-carbon projects under OPG’s Sustainable Finance Framework.

An aerial view of Darlington Nuclear Generating Station that shows site preparations for the Darlington new nuclear project.

OPG reports 2024 financial results

Today, OPG reported its financial and operating results for 2024 with strong progress on nuclear and hydroelectric refurbishments, and SMRs.

OPG's Sir Adam Beck hydro generating stations in Niagara Falls. Sir Adam Beck I GS is pictured in the foreground.

OPG partners with leading automotive supplier on Clean Energy Credits

OPG will supply CECs sourced from the Sir Adam Beck Generating Complex to leading global automotive supplier Magna International.

Attendees from OPG and the Ontario Government and the Town of Port Hope attend an announcement.

NEWS.ONTARIO.CA: Ontario exploring new nuclear energy generation in Port Hope

The Ontario government has asked OPG to explore opportunities for new nuclear energy generation at their Wesleyville site.

Aerial view of Rutherford road and Islington Ave. on July 1st Canada Day, Residential district in Woodbridge, Vaughan

NEWS.ONTARIO.CA: Ontario launches engagement on new energy generation

The Ontario government has directed OPG to begin engagement on potential new generation at three of its existing sites.

OPG reports 2024 third quarter financial results

Ontario Power Generation today reported its financial and operating results for the third quarter of 2024.

OPG announces new President and Chief Executive Officer

OPG announced today President and CEO, Ken Hartwick’s decision to retire at the end of 2024. The OPG Board has appointed Nicolle Butcher.

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Territorial Acknowledgement

Central Ontario

Eastern Ontario

Northeastern Ontario

Northwestern Ontario

Southern Ontario - Durham Region

Southern Ontario - Niagara Region

Southwestern Ontario