I responded to a comment stating that excess storage can be stored in batteries: https://news.ycombinator.com/item?id=43249008 I'd suggest reading the comments people are responding to before calling them bullshit.
> You can get so far by just storing up to 12 hours OF NIGHT TIME on a local level.
"only" 12 hours of storage is 30 TWh of storage, at the world's current electricity consumption rates. This is an immense amount of storage, amounting to decades worth of global battery production. And that's ignoring the fact that the vast majority of batteries are going to electric vehicles, not grid storage. It's true that battery production is growing, but electricity demand will similarly grow as fossil fuel use in transportation and industrial processes are electrified. Out of all of our fossil fuel use, electricity production is only ~40%. Not to mention, poorer countries are developing and will eventually start deploying refrigeration and air conditioning on similar scales as developed countries.