Ontario power companies working against Toronto's (and the country's) climate mandate

Just a few days after Toronto City Council passed a motion specifically  opposing any new or expanded gas power generation in the city, Ontario's supposedly Independent Electricity System Operator (IESO) has awarded a contract to Ontario Power Generation (OPG) to increase the capacity of the Portlands gas plant on Toronto's waterfront by 50 megawatts. 

This is in spite of IESO's admission that its new plan to expand gas-fired power capacity in Toronto, Brampton, Thorold, Windsor and St. Clair will increase Ontario's greenhouse gas emissions by over 450% by 2034 (this according to the Ontario Clean Air Alliance). Also, Ontario's energy minister Todd Smith recently promised that any new gas plant capacity would specifically require municipal approval.

So, something has to give, no? The IESO and OPG appears to be working diametrically opposite to the wishes of Toronto City Council, and diametrically opposed to the climate change goals of the province and the country. Does anyone have control over these organizations? Or maybe, Toronto and the other municipalities just have to say "er, no" and it will all just go away (I wish!)