yes, that’s it’s best application, and the only one that appeals to a conservative independent mind set. And yes, gotta have those generators for back up.
If you’re a tinkerer, you can run an engine with lots of different “junk” fuels. Used motor oil, antifreeze (GEET) wood chips/scraps (gasifier) methane from a digester.
The captured exhaust heat can also make hot water.