Plus the nice thing about a propane generator is that they cycle on once a week for 15 minutes to keep everything working properly. Then if you lose power they turn on almost immediately.
My daughter/son inlaw have one at their house. I have a Honda 7500 watt gasoline generator. It is wired through a transfer switch and panel that runs pretty much everything except the clothes dryer.
I also discovered mine is very economical. It only used 50 gallons of propane during the whole outage.