Mine is tri fuel but we do not have piped gas here. It would certainly be an attractive option if I did. Propane is clean burning, stores well and does not present the carburetor problems gasoline generators have but it is expensive. I can burn gasoline cheaper but I hate handling the gas. I have a 120 gal (actually 150 but they only fill to 80%) propane tank in the ground that they come fill. The problem is my generator will drain it in less than a week. In an emergency situation like last week I may not be able to get propane that often. It is great for a couple day outage tho.