Right now I have dual batteries and the tow vehicle has a 140amp alt. Puts out 60-70a at idle.
Still, I have been looking at the solar question for a few years due to my boat. See the problem as I see it is that in full direct sunlight, it does do a fair job charing batteries, however, more times than not, I'm not in a wide open space or the sunlight continues to move, etc making the panel(s) fair at best for my needs. Others needs will surely vary.
I have been reading about the Honda 1000 and I have to say, that looks like the right answer. No wiring, a bit of gas and a hell of a lot of bang for the buck IMHO.
Now if I wanted to run my A/C, I'd need a 3000 or 2 2000 teamed up. But the A/C is the least of my worries.