#2 Would ot take a lot to run this unit on solar panels?
Firest of all avoid this product at all cost....period. The poor quality is almost beyond belief. Doors, hinges, and hooks didn't align properly so nothing would fit when it was closed. Temperature controls were shot it would go to below 0 and stay there no control whatsoever could be achieved. When I call them about these problems they said they would send me a manual so I could fix the problem. I told him I don't pay $600 for something just to have the opportunity to fix it. And then there was the smell, good god. it took me 3 days to get the smell of that unit out of my living room.
Get the 35 qt norcold. I did later and could not be happier. True value and quality for the money.
As far as solar panels? No, it draws too much power. Just get an extra 12 volt deep cycle battery and run it from there. Now when hooked to shore power the norcold uses less than 2-3 cents a day, depending on local rates.
Hope this helps. Good luck.