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.
House-sized UPS systems are a thing. An expensive thing, mind you, though I don't know how expensive.
1.) Whole house UPS 2.) A way to take advantage of significantly lower night time electric rates.