Today is a good day to illustrate the challenges of solar and wind, and how they can't possibly be depended on. Take a look at current production:
http://ets.aeso.ca/ets_web/ip/Market...DReportServlet
Wind is providing 56 of 1445MW nameplate capacity. That's about 5% of what it is rated for. Looking at our only real solar facility, Brooks solar is providing 0 of 15 MW. So out of approximate demand of 10 000MW we get about 600MW from hydro, wind, and solar or about 6%.
So if we were to go all in on renewables, think of the capacity we would need installed, along with the batteries to cover days like today. I'm not saying these are useless, but there are huge challenges to overcome and we need to be realistic about it. We need reliable sources, and there just aren't a lot of options.