Interesting.... ATS product, at meter, for Generator input to Main panel

[SunEagle]

I installed an interconnect with a 30amp breaker with an outlet outside, spent about $125.00

I had that at my old house. It was supposed to be for a spa but I only used it to backfeed from my 5500 watt gen set when we lost power from hurricanes.

[J.P.M.]

I haven't had a chance to test the promised output yet. They do mention that there is a better output efficiency using gasoline but again it may all be just fancy advertising and not close to being true.

On a per lbm basis, propane has a higher energy content (19904 vs. 18680 BTU/lbm), but because propane is less dense than gasoline, both in liquid form and also compared to an air fuel mixture of air/gasoline injected into a cylinder, less energy will be injected into a cylinder with every four stroke cycle. That may give a slightly better thermal efficiency to gasoline, depending on the particulars of the fuel handling system.