Bittersweet, really. A large contributor to Ontario's ability to shut down coal came from large drops in demand due to big losses in the manufacturing sector that never came back after the 2009 recession. Renewables (wind, solar) cannot make up for the loss of coal and most of the shortfall (aside from reduced demand) is coming from new gas plants (which, of course, are a lot cleaner). Some new nuclear came on line as well. (Bruce Nuclear is the world's largest nuclear generating site, and it is in Ontario).