Our current 5er already had solar but I added 1 - 150w panel and a mppt control on our last 5er. We've been dry camping a lot and I want to make sure there's power for my cpap. I thought long and hard about solar vs gen and decided that if solar works, I don't need to fuss with a gen. I never use the luggage rack so I mounted the panel on it to avoid more holes. On our first trip, I had to setup with the panel tilted to the north and it was partly cloudy every day. We ran all the (led) lights we wanted and used the furnace a little and the batteries (2-6v) were fully charged every afternoon. I will always have solar on my RVs from now on. Craig