Ontario Power Generation (OPG) owns five thermal electricity-generating stations.
Atikokan Generating Station, located in Atikokan, has been converted from coal to use biomass as fuel. The two-year conversion project was completed on time, and on budget in the summer of 2014 and is now the largest capacity 100 per cent biomass fuelled plant in North America.
Lambton Generating Station is located in St. Clair Township. It stopped using coal as fuel in September 2013. The station no longer operates and in November 2016, OPG announced it will begin decommissioning the two remaining generating units in 2017.
Lennox Generating Station, located in Greater Napanee is a dual fuelled oil-gas station that can provide over 2000 MW of peaking power to meet peaks in electricity demand.
Nanticoke Generating Station is located in Haldimand County. It stopped using coal as fuel in December 2013. In July 2015, OPG announced that the station will be closed safely, securely and in an environmentally responsible manner. OPG will continue to own the site.
Thunder Bay Generating Station is located in Thunder Bay. One of the station’s two units was converted from coal to use advanced biomass as fuel. The conversion project was completed on time and on budget in the winter of 2015. It was the first station in North America to generate electricity using wood fibre advanced biomass pellets.