As someone who lives across the world from San Francisco where electric cars are not currently feasible for year-round driving - how does an electric grid like California's accommodate such a large increase in electricity usage?

I guess there's enough people that are able to work remotely, but I feel like having thousands of electric cars get plugged in to charge at roughly the same time would be hard on the grid - especially when you're also looking at the same people likely turning on high-current loads like air conditioning at the same time too.

Does California ration electricity, or are they able to generate enough power to maintain the system? I'm genuinely curious - we're going to have to develop similar systems in other countries/states if we're going to push for all electric cars for the future.