Rather than rich people spending squillions on propane generators, how about spending less and fixing your damn grid?
https://www.construction-physics.com/p/the-birth-of-the-grid
Ah, if you click through to the actual stat you’ll see that without “Major Events” (whatever those are), the US goes down to 125 minutes per year.
Like, sure, if we wanted to we could massively build our electrical infrastructure to absolutely never go down. Hurricanes, tornadoes, massive hail, earthquakes, whatever. We can build so much redundancy and extreme engineering tolerances. It might cost us $1+/kWh though. Is it worth it? No? So then there's some dollar amount where we'll allow some downtime and failures for cost savings.
So what if the power in my house goes down a few minutes a year. I'd much rather pay a lot less for a few minutes of downtime than pay a lot more just so...the lights don't go out for a few minutes every now and then?
I’d also point out that Germany has its share of wild weather, including floods and storms. And yet they keep their grid up a lot more reliably than the US.
2 hours per year without power per year is probably fine. A year is a long time.