How to measure how much solar we need?

NinerBikes wrote:

With what you tell me, and not sacrificing, and where you camp, and how much roof you have on a C class...I'd sell your 1990's generator, and get a new Honda Eu2000i Generator online from Wise Sales. Maybe a good 14.8V charge controller too.

Somehow I missed that it was class C.

With class C - Pianotuna could tell something more, though in his inland area, even though darn cold, he is getting more sun in winter than in coastal WA.

I would say - forget about solar in winter in WA with class C. Wrong location, wrong season, and wrong RV, too small roof.

Maybe get some portable 100-200W, no need to install anything. Inevitably being tilted and TAD tracking, 200W portable will work like ~300W flat, in this area. It will let you live without generator on some days in summer, when it doesn't rain.

Path1: what Steve in Oregon wrote about 300W solar - not that I disagree. Technically, possible. Though OR is a little better in winter than WA, and as noted, you have to be very good at energy conservation. If the approach is "why bother going RV if we can't use everything that is in there" (i.e. all 110V devices and more) - it's not going to work for you.

Same as Steve, I don't feel like I need more solar (with my 490W). But I constantly see people with same size solar running generators 6-7 hours a day, on the same camp in the same weather. First I asked, for curiosity, then stopped. They either can't provide any explanations, or mumble something about the wife that "wants to do many things at the same time" - have no idea what this could mean. None of them bothered converting lights to LED, none have proper 12V fans for hot weathe, and most of them spend many-many hours in front of their TV sets (which are usually also not the most modern and efficient).