EA Energy Alternatives Ltd.

These are heavy-duty, mobile-use generators that operate on Propane (LPG) or Natural Gas (CNG) fuels and are modified for stationary-use. These generators offer extremely quiet operation - less than 70 dB(A) at 7 m (you can easily talk to someone else standing beside the unit). Electronic 3-wire automatic start for integration with generator start inverters such as the Xantrex XW, Outback, and Magnum inverters or manual remote switch.

Many remote homes already have a large propane tank that is occasionally filled by a truck. These generators can tie into that system, bringing an end to constant hauling in of fuel.
Propane generators will have the highest yearly fuel consumption when compared to other high quality gasoline and diesel generators. They also tend to have the shortest lifetime.