Metric shittons. A 650 MW solar plant is around $900M USD, so $100B translates into 72 GW. That would power ½ of Canada. It's cheaper to use hydro (PES) rather than batteries (BESS) at scale, and Canada already has a lot of hydro power. $50B would buy lots of PES and distribution/transmission levelizing BESS that would allow greater flexibility in generation production.
With the prices for solar (the expensive parts are not the panels but the inverters and labour costs) and batteries still going down you will get more than what you thought when you started to spend the first billion.