If you can afford it, I think having a large propane tank topped off is a tremendous backup. It can fill in if something happens to you and you can't get wood, also, because propane lasts forever basically, a generator hooked to it is the least hassle way to have a long time back up electricity source.
You can buy propane cheap now, then sit on it. I guarantee it ain't gonna be cheap 20 years from now, when it will still be good to burn, and you can't store gasoline or diesel near that long, and also will guarantee gasoline and diesel ain't ever gonna be cheap again either.
We have one, and as soon as I can find a cheap adaptor for one of my gennys, that is where it is going. Our tank is full and got filled cheap several years ago and haven't used a single BTU from it yet. There's two propane wall heaters in the cabin, and I have a large propane heater/furnace in my storage, but haven't had to use them. the only propane we use is ladyZs propane outside cooker. she uses that when it is real hot out. the cabin came with electric stove hookup, so that's what we have and use now, the propane tank and heaters install came a few years later. Now if the electric stove ever goes kaput, ya, I'll switch then to propane. For when the power goes out, we either use the outside cooker or I have a table top camping propane two burner we can use if it is like pouring rain outside..and yep, here, with this crappy power system, we have used it a lot.
Heck, I'd like to have a dual fuel fridge and freezer for that matter, electric and propane, like what is in our RV. That thing is just small though.
Of course you either need to own the tank or use enough every year they don't get annoyed with you, but just sayin'. I like having backups for my backups. Been through too many hard times in my life to be complacent about things...and looking at the news a lot...I ain't being complacent about the future, either...
