Doesn't that really depend on if you can't use it all? If you get 50% of your electricity from solar during the day, can't you use it all? At night you simply

Doesn't that really depend on if you can't use it all? If you get 50% of your electricity from solar during the day, can't you use it all? At night you simply have to get the other 50% from fossil fuels. Isn't that still a big win in the short term? If half the world's daytime electricity came from solar, we'd be in much better shape.