What is the basic purpose of hooking vehicles such as recreational vehicles to run with solar power? Of course, the greatest benefit is of the cost. With an RV, there is a lot of energy consumption in the form of the battery itself, the various appliances in the vehicle and such. These Rv Solar Power Kits can make the entire vehicle run on solar power if you need. That reduces fuel costs drastically. Another great incentive is that this is a good thing to do for the environment.