This begs a question: when energy production figures are published for an energy source, do those figures include electricity that is produced and not used? And are utilities paying for electricity generated even when they aren't using it? I assume that is a contracting question.
On a blustery Labour Day weekend this year, the wind turbines sprinkled across Ontario’s landscape set a record.
That Saturday, they pumped an average of 1,000 megawatts of power into the province’s grid over a seven-hour stretch, the biggest sustained wind output on record. It amounted to about 7 per cent of the power demand at the time.
That was the good news.
The sobering news was that the power flowed into the grid on a cool Saturday afternoon during a holiday weekend when there wasn’t much demand for it.
Despite the flaccid demand, wind generators were getting an average of 12 cents a kilowatt hour for their power, while conventional power producers subject to the wholesale market were getting 7.4 cents.
http://www.thestar.com/printarticle/866129