The Thunder Bay Generating Station (“Thunder Bay GS”) is a biomass- powered power station owned by Ontario Power Generation (“OPG”). It is located on Mission Island in Thunder Bay , on the shore of Lake Superior . 
Operating since 1963, Thunder Bay GS was the last coal fired station in Ontario. The plant was shut down in April 2014 as part of Ontario’s phase out of coal-fired electricity generation.   It was converted to run on advanced biomass (wood pellets) and recommissioned on February 9, 2015.