Save yourself a lot of expense, Stephen, get a reliable gasoline-fueled 2.5 - 5 KW genset and a 25 to 50 (345 lbs full) gallon propane tank and several extension heavy duty cords to reach the appliance you want to power as needed. With a needle valve you can bleed the low pressure propane gas into the gas engine air intake according to load demand. Otherwise a "wind-charger" and deep-cycle batteries for the long term.
and.... http://www.invertersRus.com/ Fred
