Ahh,
yes, did the install on our travel trailer as well.
A really simple one with one flex panel glued to the roof and connected directly to a chinese battery storage i got cheap on aliexpress. Works out of the box so no need to mention.
I'm planing next to have a fridge in that is provided seperately by it's own panels.
For our house i consider eighter a offgrid solution charging mostly our car or an full on grid system.