I ran a generator on/off for a week with no power in NC. Until the propane tanks were getting low. Takes power too to refill propane-which no station had to pump it. But storing propane beats storing gasoline any day of the week
Do you not get delivery to fill your propane tank?
If people have propane to heat their house around here they typically have a tank on their property that holds hundreds of gallons. That tank is typically owned by a local propane delivery company that comes around on a regular fill up route based on your past usage.