These guys have a different spin on running Air Conditioning on solar power: just make a DC air conditioner. Nice. They run it at 24V. I am not sure why they did not go for a higher voltage to sneak out some more efficiency.... I'll leave a question and see what comes of it. But they skip the inverter losses and seem to have made a tidy little unit.
http://www.greenrealitiesllc.com/virtual-powersolar-ac.html
13,500 BTUs... a small RV AC unit size. Not too shabby. The additional goodies (grid-tie option and battery carrier area) seem to be in the "technically feasible but lots of regulations to contend with" category. But the "stand-alone, grid-free AC while the sun shines" part is good to go. I'm guessing there are plenty of customers for that.
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