About propane...
I hope to never ever need a generator at all, didn't need it so far, South of the border my solar generates more energy than I can consume. But you know what they say - never say "never". So I did some digging on propane gennies in terms of noise, fumes, and portability. Here is what I found:
Propane generators (meaning propane-only) have several times shorter life than diesel or gasoline gennnies. Same goes for natural gas generators - short life.
Propane generators are hardly portable - in any event this isn't something that you can lift or carry. Loading and unloading it would be a pain. For running it more than few days non-stop (or more than 12 hours a day) you would need a stationary tank.
Fumes - no contest here, propane is cleaner than gasoline or diesel genny. Cleaner exhaust and less smell around the tank.
Noise - marginally quieter than gasoline. Which means - too loud for me to use it regularly. As an emergency-only, maybe yes. To be fair to propane gennies, all so-called "quiet" gasoline gennies like Honda EU2000 are understating their noise, quoting 55-59 db while in reality it's 70-75 dB at 10ft distance.
