I would say that fifth wheels lend themselves well to solar power, and unless you need the air conditioner other power uses can be handled by a couple of panels and/or batteries.
I fully intend to carry our Honda 2K generator and also realize it will not run the 13.5 a/c, but we have found that boondocking places don't generally need air.
Mike
2012 Winnebago Impulse Silver 26QP
2005 16.6 Double Eagle
2018 Jeep Wrangler JK
previously Snowbird Campers,
Triple E Motorhome and Fifth Wheel