On New Year's Day, 2017, Ontario saw lower total generation from natural-gas fired facilities that it likely has on any day in over two decades.
Over the first 20 days of the year electricity produced from natural gas is down 48%, leaving electricity generation producing about 1/3rd of the emissions it did during the first 20 days of 2014, following the end of coal-fired generation at Lambton and Nanticoke (as 2013 ended). The year-to-date average I estimate at 21 grams CO2 equivalent emissions per kilowatt-hour (CPIK).Judged only on emissions, this is an impressive accomplishment. Those concerned with Ontario's electricity sector may wonder what it cost, and if there are negatives associated with the changes. I will explain why emissions are dropping, and although it's not possible for me to cost out the changes, or specify the negatives, I'll demonstrate why the IESO should reveal these.