4 ms·

> just shut down Yes, a year ago.

• gwern 4y ago
  Sure. My point is that you might think they have some sort of fancy backup system or to be totally self-contained because otherwise the alternative is that when the grid has problems, they shut down, and surely they wouldn't do that?! But turns out, they do, and that is not merely a hypothetical and happened quite recently. So, the answer to 'what alternative do they use' may just be 'nothing'.