[Filligree]

You can have a battery instead. You can get a battery right now; lead-acid will work just fine, if we're talking power outages of an hour or less.

House-sized UPS systems are a thing. An expensive thing, mind you, though I don't know how expensive.

[psaintla]

Yeah, I looked into that and last I checked it is prohibitively expensive. If this is a viable alternative I can see two great uses.

1.) Whole house UPS 2.) A way to take advantage of significantly lower night time electric rates.