I was literally thinking about this problem the other day.
I was day dreaming about the idyllic rustic life living in a cabin in the woods away from civilization etc... Then I got thinking, you know what? I would hate that, this week the temperature has been hovering around 32-38 degrees, which is hot. Sitting in a hot cabin all day doesn't sound so romantic, nor does hiding in a lake all day. AC is pretty much out of the question, as I'm pretty sure it would be too inefficient and drain whatever power you have in short order...
However DC AC (lol new Aussie band name?) might work better. Presumably when it is hottest out when you want AC, it will also be very sunny for your solar panels, which if more less feed directly into your AC might work out better.
Anyway it all sounds rather interesting... OK I'm off to start day dreaming about unrealistic rustic off-grid living again!