A little fact checking on your part Mike could add value.  China has only undertaken to either delay or not build coal fired power plants where there is no need for additional electric power.  When there is a need China has said they will build new coal fired plants.  No matter how much "green" energy  or nuclear power they produce, until they start closing coal fired plants - to say nothing of not operating new ones - the climate suffers.  Nothing Canada can do would including a full stop of all fossil fuel burning would offset the increased GHG China will produce.  
Canada should undertake to keep their emissions at the same or lower percentage of world output.  That way we act in concert with the world, which to the climate is all that matters.