[Kon5ole]

I don't see "the sun isn't shining at night" as a good argument, yet it always comes up in these discussions.

We have a lot of ways to store energy. Molten salt, pumped storage, hydrogen gas from water just to name some. All of these are possible in some places and impossible in other places, but there is no place where nothing is possible.

Since the "fuel" for wind and solar is "free" it doesn't matter that you spend more energy saving energy than you get back later. Anything you can save is a plus. And then you get to use it whenever you want.

In short - when the sun isn't shining you spend the energy that you saved when it WAS shining.