I've thought of this myself, but don't have any experience with this sort of thing. Ive said it before..I HATE listening to generators or gas power washers. I have a friend who is good with that sort of stuff, and we have discussed setting up a van with several deep cycle batteries, a 4000 watt inverter, and running a seperate alternator to power them. I have no clue how that would work, but he's confident that he can do it. To me, that wouldnt be that much different than what your describing. I'm just not sure how big of a solar panel (or panels) it would take to power such a set up. Extractors alone pull a massive amount of power, and I would imagine it wouldnt take long to drain 2 or 3 batteries when something like that is running. If the solar system worked, it would be pretty cool because in theory it would run all day with no worries. I think if it was me, I would call a place that sells solar stuff, and explain what you want to do. They should be able to tell you exactly what you need. Being in the redneck area that I live in, we have a store here that sells Doomsday supplies (no joke), and they do a lot of solar systems. If you don't have any luck finding someone to give you the info you need, I could get you their #. They know their stuff. Good luck to you.