We have a Champion 3500 dual fuel. We only run it on propane and will never put gas in it. Works really well and has electric start. That would be 3500 Watts, not kw.
Unless I’ve missed it, there is a gap in the market for propane-only generators: these few smaller <1000kW units mentioned here, and whole-house permanent backup generators. Nothing in between? There are of course dual fuel units or gas conversion units, but nothing propane dedicated over 1000kW before you get to the whole…