Corsair if you have natural gas you might want to get a gen set for that as pressure is not affected by power outages. It won’t last forever in shft but through emergency it’s easier than keeping gas for it and gas can be used for things you can’t get in natural gas. Just get a line run to garage with a vented sound insulated box for generator allowing for air flow and exhaust, make sure it’s off floor in case of flooding. They are loud exhaust, can be fitted with a motor cycle or car muffler just make sure it does not cause too much back pressure.
Have a change of oil as they are not filtered and oil should be changed regularly when running 24 hours to keep house powered up.
There are also tri fuel that run on propane/natural gas/ gasoline I have not run one like that but remember old trucks bing converted they never really ran well but maybe tech has improved.
I practice the desert island mentality. What’s on your land is all you have along with your skills make it work or fill the gaps. This is way easier in the country side and nearly impossible in the city as you would violate every city ordinance.