It is an interesting tidbit in this whole electricity discussion that Ontario does indeed have a *MASSIVE* glut of generating capacity right now.  In fact that is a bit part of the problem: The Province signed contracts were many companies are being paid even while there is no demand and their generating station is sitting idle.

For a specific numbers, today's peak capacity is 24,290MW while projected peak demand is 16,152MW.  May is known to be a "low consumption" month since we don't use much heating or cooling, so a lot of generating plans shut down for maintenance.

Ontario's TOTAL generating capacity is 36,130MW, though in practice it is more like 32,000MW of usable capacity.  Our peak demand for the entire year is expected to be between 22,512MW and 24,851MW, depending on weather conditions, so even the 'extreme weather' projection is well below peak generating capacity.

All numbers care of IESO's website.