Renogy has produced a solar panel here that is available in a wide range of voltages, depending on your needs. If you need to power a lot of appliances within your RV or you have appliances that go through power quickly, the top wattage you can purchase is a 400w panel. This is incredibly powerful.
We also like it for a number of other features like the corrosion-resistant frame that is made from aluminum so these RV solar panels should last an incredibly long time. This is what all users want when looking at solar power for RV journeys as it gives peace of mind that you will always be able to switch the kettle on!