I think the consensus is our greatest hydroelectricity capacity has been tapped. The last few mega-hydroelectricity projects in Canada have been very expensive. We've seen that in B.C., in Manitoba, in Labrador and elsewhere, so that's not going to be the source of the next doubling or tripling of our grid.
From my perspective, renewables are pretty expensive. They're intermittent. You need to pair them with batteries. Batteries usually only last for a couple of hours. They don't work great at -40°C either. I think in Canada nuclear is the most obvious situation to proceed with the clean electricity grid.