The backstop will not apply throughout Canada. The backstop will only apply in jurisdictions that choose not to implement carbon pricing. Until such time as we know what those jurisdictions are, the economic analysis remains.... We've done broad economic analysis about the impacts of carbon pricing, but specifically what the impact to the carbon of the federal backstop will be depends on two things. First, it depends on what jurisdiction it gets applied in, and second, it depends on how that jurisdiction chooses to use the revenue that we've committed to return to them. We have no control over that, and so those two factors remain to be decided.
On December 12th, 2017. See this statement in context.