Westerner has been deceived: by far the major cause of Ontario's high electricity rates has been the foolish (crony?) decisions to waste billions of dollars on nuclear infrastructure. Though renewable energy was given outsize subsidies to kick-start the industry a decade ago, 
1. Subsidies are declining and will continue to do so as renewables continue to become efficient
2. Renewables are (regrettably) a small portion of Ontario's electricity supply