GrauGeist
Generalfeldmarschall zur Luftschiff Abteilung
Currently, here in California, our electric grid is aging and woefully overburdened, leading to rolling blackouts.Its not a new technology, or an error... It's called a rotary inverter, used as a mechanical means of converting DC power to AC.
Add to that "planned power shutdowns" during high wind events in rural areas, to avoid a source of wildfires or extreme weather (like heavy snow).
We use generators sometimes for a days on end, in some cases for close to two weeks.
A battery powered "generator" is good for low-demand appliances or for a weekend camping trip, but not for what most Californians need - which is why it's the brunt of a joke.