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Thunder Bay Generating Station



The Thunder Bay Generating Station (GS) is located in the City of Thunder Bay next to the Lakehead Region Conservation Authority’s Mission Marsh. It is one of Ontario Power Generation’s five fossil-fuelled stations.

The Station’s Unit 1 came into service in 1963 at a cost of $27.3 million with the capacity to produce up to 100 megawatts of electricity. It was retired in 1984. Unit 2 came into service in 1981 and Unit 3 in 1982 at a combined cost of $345.4 million. Together, they can produce up to 306 megawatts of electricity.

The Thunder Bay GS has 145 employees whose skills and experience are essential to reliable operation. Electricity produced at the Thunder Bay GS is distributed through Ontario’s electricity system throughout Thunder Bay, northwestern Ontario, and to major industries.

Looking to the future, OPG is testing biomass fuel at all of its coal-fuelled stations as a potential alternative fuel for electricity production. Biomass in the form of wood pellets or agricultural by-products is recognized around the world as a renewable source of energy. It is considered “carbon neutral” as burning does not add to greenhouse gases in the atmosphere. OPG’s biomass program does not use food crops and requires that fuels are from sustainable sources. While there is more work to be done, test results have been encouraging. For more information, visit the biomass page on opg.com.


Community Contact

Your community contact is
Derrick Brooks
(807) 625-6400 ext.6457

Station Brochure


Download our Thunder Bay station brochure.


Community Connection

Find out more about all the ways the Thunder Bay Generating Station is making a difference in your community.


SD Report

Our 2008 Sustainable Development Report is now available for download.