One of the big challenges with the renewables and Canada is that winters are cold and dark, and the solar thing is just not built to work in northern climates. This is one of the reasons I suggest that the northeastern U.S. has fewer options to electrify and that the benefit of having Canada right beside them is that we can send hydro power down to the U.S. Equally, it can go east-west, because the renewable options will be less effective up here than they will down there.
If we try to build a system based around solar battery in Canada, our electricity will be higher in price than the electricity from the same solar battery system down in California. We get less sun. That's the way it works.