Looking at carbon targets, and specifically an emissions outcome, what I've called solving for greenhouse gases as opposed to solving for specific elements of the economy that may or may not emit is the way to go. That's certainly a very principled approach, where you can put regionalized creativity and specificity into achieving a goal. The way that goal gets achieved in Alberta might be quite different from the way that goal gets achieved in Nova Scotia, and may be quite different from the way it gets achieved in Ontario or Quebec, and each is valid.
On October 16th, 2017. See this statement in context.