Ontario Power Generation (OPG) has been proudly operating in Eastern Ontario for over 100 years. Today we have one thermal facility and 10 hydroelectric generating stations on the St. Lawrence, Ottawa and Madawaska Rivers. These stations, their employees, and host communities play an important role in generating clean, reliable power for Ontario.
See how we are a part of communities across Eastern Ontario and learn about our many local programs, initiatives, and events.
Upcoming events
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End of summer water level minimums
Summer water level minimums end on Oct. 14, 2024 (Thanksgiving Monday). On this day, OPG adjusts operations within the allowable operating levels during the fall and winter months. This can result in lower water levels.
Additionally, when the proper environmental conditions have been reached, water levels on the Madawaska River – between Calabogie and Stewartville generating stations – are lowered to within allowable operating levels to encourage amphibians and reptiles to hibernate safely. This is an initiative supported by the Ministry of Natural Resources and Forestry.
Residents and businesses along these rivers are advised to take all necessary precautions to ensure the lower water levels do not impact property.
Please visit water.opg.com for more information.
Key projects and initiatives
At OPG, we have a purpose that goes beyond generating clean, reliable, low-cost power – we’re helping generate a stronger, cleaner more prosperous Ontario.
Generating power with purpose
Our role in Ontario isn’t just measured by kilowatts (although we’re really good at producing them); it’s measured by our relationships, the impact we make, and the future we leave to the next generation. That’s why we strive to be good corporate citizens who care about the environmental, economic, and social wellbeing of all Ontario.
Saunders Hydro Dam Visitor Centre
The Saunders Hydro Dam Visitor Centre is now closed for the 2024 public tourism season.
The centre will reopen in May 2025 for public visitation.
If you would like to inquire about booking auditorium space, an educational tour, or schedule a large group tour, please contact us
Saunders Hydro Dam Visitor Centre
2500B Second Street West
Cornwall, ON K6H 5R6
613-932-4563
Environmental initiatives
Madawaska River Water Management
OPG works with local waterpower companies and the Ministry of Natural Resources on a balanced approach to water management on the Madawaska River that considers the various interests of many users.
The result of this work is the Madawaska River Water Management Plan, which includes operational plans for each waterpower facility or dam, provisions for management of water levels and flows, stakeholder communication, and environmental programming.
Our generation in Eastern Ontario
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