if u are always camping somewhere where the top of your camper is getting sun 8hrs a day then 60watts will be great and probably more then enough. But if you are camping in area's receiving a lot of shade and only a couple hours of direct sun 60watts will not be near enough imo. Personally i would buy the largest panel you have room for on your roof. I was able to get away with a 140watt and i can actually still put 2 more 140watt panels up there if i ever wanted to. I am finding with my panel that even on cloudy days as long as the camper is not shaded the panel is still putting out an impressive amount of energy. Sunny days its almost unbelievable how good it works. Shade gives you about nothing so keep that in mind.