I live aboard a boat and have installed a 1250 watt inverter to run the frig & freezer units while away from the dock with out the hassel of constantly running the diesel generator. Ships batteies are a pair of 8Ds.
It occured to me that a similar system could be used by home owners in those days after a hurricane (or winter storm) when power is out. All that would be required would be a stand alone (hefty) 12V battery, an inverter and a compact frig or freezer. Experience has shown that among the most sought after emergency supplies are ice and water.
To keep the big battery charged would be a second inverter plugged into a car/truck gigarette light outlet with engine running (outdoors of course) that powering a battery charger. Maybe not the most electricaly efficient enginerring, but simple and full proof. A stash of gasoline for the host vehicle and plenty of 5 gallon water jugs would lengthen the survival mode scenario into weeks if necessary.
The 4.7 Cu Ft frig on my boat pulls only 600 watts, so an 8D battery would run it for quite awhile. The Haier brand frig cost only $190, and good 8D marine battery $200- $250, a 1250 watt inverter $129 (with cables). There would be enough reserves to run small lights or a TV (and it's digital converter if needed) and cell phone charger. A smaller freezer was also under $200 and boy does it do a great job on making ice.
Deep cycle golf cart batteries would also do a great job as emergency power source when coupled to a 12V > 120 V interverter.
The perk over a portable gas generator of course is no noise, no exhaust fumes, the hazards to topping off a hot generator with gas and overall cost.
The compact frig also is a neat workshop, den accessory.
Hope this is food for thought for those of us in hurricane land.