Hour 10 has 1427MW recorded, which is 1MW higher than the 1426 recorded for hour 9 only two Sundays before.(endnote 1) The day was also notable as mild temperatures further reduced Ontario's demand, which had already been trending down for the previous 6 weeks.
Comparing hourly production data from Sunday November 27th, 2011, to the production from Sunday, November 28th, 2010, and estimating hourly demand from intertie activity, shows that the additional wind generation of 20,119 MWh coincided with a drop in demand of approximately 38,365MWh of demand.(endnote 2) That required over 58GWh of other supply to be curtailed, or exported, which is essentially all production from natural gas and coal that occurred in 2010. Cas and coal reductions were only about 25.6GWh, nuclear 22.1GWh, and exports were upped by 10.5GWh.
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