We use about 70AH in the summer and 140 or so in the winter. (I have seen 200AH used when camping at 35F) Only use solar in the summer (April to October in the open) as in winter we camp in trees at provincial parks where solar wouldn't work anyway.
I find that around 200 or so watts of solar is enough for us when mounted in a tilted twirler, which is like maybe 350w flat to handle all our needs. It is like a bottomless pit for AH running the microwave, kettle , electric toaster, TV/DVD, whatever and still the batts reach full by dark.
We have 255w of solar and a 2000w and a 400w MSW inverter to run things.
If there were a 12v hot tub , maybe we could try that to see if we could find a way to use up all the solar AH we are getting! :)
