Methane emissions, coal-fired electricity, and standards regarding
the use of clean fuels in transportation, industry, and buildings: each
of these areas of Canadian climate policy are ones in which some
provincial governments are developing independent approaches that will
be measured against standards set by the federal government.

Canadian law allows federal and provincial governments to sign
equivalency agreements if provincial regulations would achieve
equivalent or better environmental outcomes as federal regulations.
There is, however, little precedent and no standard method for judging
equivalency.