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

Media Releases

August 22, 2019

3 min read

Nanticoke powerhouse safely demolished

Demolition of the former coal station now complete

Nanticoke – Today, Ontario Power Generation (OPG) safely demolished the powerhouse of the former Nanticoke Generating Station (GS), which was at one time the largest coal-fired plant in the world. The site on the north shore of Lake Erie has been transformed into OPG’s first-ever solar facility.

“The closure of Nanticoke Generating Station remains one of North America’s single largest climate change initiatives. Building and sustaining a clean, low cost electricity system is fundamental to a healthy environment and a strong, low-carbon economy.

I want to thank all of the employees that contributed to the legacy of a high performing station and the community for their decades of support and ensure residents that Nanticoke Solar is a continuation of OPG’s rich legacy of generating electricity in their backyard.”

Mike Martelli, OPG President of Renewable Generation

OPG and its partners, Six Nations of the Grand River Development Corporation and the Mississaugas of the Credit First Nation, developed the 44-megawatt solar facility on time and on budget. The facility went into service on March 29. Nanticoke Solar is the fourth OPG First Nations partnership.

Located near Port Dover on the shores of Lake Erie, the former Nanticoke Generating Station produced power for more than 40 years and at peak capacity, the facility could power a city the size of Toronto. Nanticoke burned its last piece of coal on Dec. 31, 2013 and demolition of the stacks occurred on February 28, 2018.

OPG is the largest electricity generator in the province, providing almost half the power Ontarians rely on every day. It is also one of the most diverse generators in North America with expertise in nuclear, hydro, biomass, solar and gas.

Nanticoke powerhouse demolition

Video credit: AIM-DELSAN / CONCRETE PICTURES

Backgrounder: Nanticoke Generating Station

OPG’s Nanticoke Generating Station (GS) was once the largest coal-fired power plant in the world, with a total capacity of 4,000 megawatts at its peak operations. This is almost 1,000 megawatts more than the current capacity of Pickering Nuclear GS. Throughout the late 1990s, Nanticoke GS provided a significant amount of Ontario’s baseload power. This station employed more than 600 staff and provided essential electricity to southern Ontario’s industrial sector.

Replacing coal-fired electricity generation remains the single largest climate change initiative undertaken in North America, and was the equivalent of taking up to seven million cars off the road. Banning coal for electricity generation has contributed to reduced emissions of fine particulate matter, sulphur dioxide, nitrogen oxides, toxic substances such as mercury, volatile organic compounds and black carbon (soot), and has helped reduce the number of smog days in Ontario.

Quick Facts

Construction timeline: 1967 to 1978
Decommissioned: 2013
Generating capacity: 8 x 500 megawatt unites with a total capacity of 4,000 megawatts
Stack height: 198 metres (650 feet) or roughly equivalent to a 60-storey high-rise
Powerhouse size: 491,400 sq. ft. or more than 8.5 football fields

Nanticoke solar project

In 2016, OPG and its partners, Six Nations of the Grand River Development Corporation and the Mississaugas of the Credit First Nation, were selected by the Independent Electricity System Operator to develop a 44-megawatt solar facility on and near the Nanticoke site. The facility was completed and online on March 29, 2019.

Generating capacity: 44 megawatts
Number of solar panels: 200,000

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For further information, please contact:

Ontario Power Generation
416-592-4008 or 1-877-592-4008
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