When you sell the house, I think the buyer will need to take over your solar lease payments. You should research this arrangement before deciding on financing types. I hear that generally, marketing uses aggressive energy cost growth projections, so it is worth running the numbers yourself.
With respect to solar panels themselves - in places like California, they are positive to home value perception. In Texas, who knows. In the North East, they will probably be regarded as a liability, since there are seasons with snow and no one wants to deal with another complicated thing in their house.