Propane
Nat gas is grid dependent, outages, repairs, backhoe joe diggin into 3 miles up the road. Etc
If youre sitting on a 500 gallon tank of propane, youre set for a while.
How long do you think a 500 gallon tank would last. Our whole house is electric way out in the country so it isn't if the power goes out but when. We have been looking at Generac brand generators.