It doesn't make any sense to use photovoltaics on this scale since it would deplete resources of rare metals and oxides used in solar panels. Therefore solar concentrators would be better. Parabolic "troughs" focus the sunlight onto hot-water pipes. The steam produced drives turbines that generate electricity. This is a very efficiency way to utilize solar energy.

The main problem with solar concentrators is the need to track the sun, and to keep the mirrors clean. This problem is worse for Canada which may be snowbound for several months per year. In my opinion we can forgo the sun-tracking aspect by orienting the troughs east-west. To make them easier to clean we simply place a transparent plexiglass surface over top that transmits sunlight, but that a maintenance vehicle can drive on as well. The maintenance truck simply drives over the plexiglass surface clearing snow, removing dust, and washing away dirt.

If you think about it, Canada has invested enormously in developing oil reserves. What we should have done is matched dollar for dollar that investment with the development of solar and wind energy for methanol production.