Looking at my Ontario Generation Charts, you can see that as of April 19-20 2008 the amount of nuclear power produced in Ontario has reduced, likely seasonally based on 2008 behaviour.
However, as of that date - the entire Darlington generation site is generating zero MW or power on all 4 of it's 1GW generators. This did not happen in 2008.
Very surprising. I can find not mention on www.ieso.ca or on the net for why this happened. Anyone know?