Ontario has had a policy of eliminating coal-fired generation for longer than most Ontarian's remember. The election of 2003 saw the Liberals promising to eliminate coal by 2007, while the 2 other main parties looked to 2015. The Liberals won that election, but we are still working towards eliminating coal by 2014. Every action the government takes on the electricity sector file is sold as a step to replace 'dirty' coal - whether it is referencing wind and solar feed-in tariff (FIT) programs, the contracting of natural gas-fired generation, or the signing of nuclear deals (Bruce 1 and 2 refurbishments).
Recently the allegedly environmental allegedly non-governmental organizations (ENGO's) have been broadcasting that 45% of the global adjustment is due to nuclear (
OEB MSP report) - stupidly, or dishonesly, claiming that means 45% of the increase in your bill is due to nuclear.
The value of Ontario's electricity market, for only the commodity (excluding transmission and distribution) is about $10 billion, and whatever amount of that is not collected through market sales, at the Hourly Ontario Energy Price (HOEP), is collected by the global adjustment (GA). I'll use the global adjustment as a starting point for discussing the cost of Ontario's methodology of replacing coal.