I don't think using 110 or 240 volt equipment running on inverters from 12 volts would be very effective. This technology is currently being used in UPS's, which need to be filled for hours to support the load for just a few minutes. I think we should stay with 12 volt appliances and equipment solely, as the ration between fill and support is better. Ideally, we should get a 1:1 ration, but that is difficult to achieve. The lower the ration, the more energy generating equipment is needed to get the same effect.
Comment by Kiko.