On January 21, 2013, the Ontario Ministry of the Environment (MOE) released a discussion paper titled "Greenhouse Gas Emissions Reductions in Ontario" in order to elicit public input on the development of a greenhouse gas (GHG) emission-reduction program. The paper indicates that the program would initially limit GHG emissions from fossil-fuel-fired electricity generators and large GHG emitters in certain industries, including petroleum refining, chemicals, steel, cement and pulp and paper. The paper also indicates that the program would limit emissions from facilities in these sectors (other than the electricity-generation sector) to the level of their current total emissions, with the limit declining thereafter by 5% over five years. Although it does not explicitly advocate a cap-and-trade system, the paper does suggest that the MOE will consider the use of emissions trading mechanisms to increase the economic efficiency of achieving the proposed limits.

The MOE will accept submissions on the discussion paper until April 21, 2013. For further information, please see the Environmental Registry.