as Mr Cranston pointed out, don't overlook the possibility of changing the thermostat on a small chest freezer to the working range of a refrigerator... the upright chest freezer will typically have better insulation, and not allow cold air to as easily spill when the door is opened...an EU2000 with a propane/natural gas conversion could possibly be modified to work with a wood gasification generator to work with a variety of fuel options...