No, Ontario’s last coal generation plant closed down in 2014.  The current carbon dioxide intensity of Ontario’s electricity is 40g/kWh.  Coal plants are in the region of 700g/kWh.

Ontario’s grid is relatively clean, you can look at today’s numbers here.

An electric bus is far more efficient than a diesel bus and even in places like Alberta that have a lot of coal generation diesel is still more polluting than electricity.

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