We put a large array on my house a number of years ago. When we were researching options we spoke to a realtor friend of ours about leasing. He said leasing can be problematic if you don't intend to be in your home for the life of the panels. He has seen home sales get really murky over folks who don't want to pay the lease. Not that it would happen to you, just what he cautioned us about. We ended up buying them outright and as another poster said their are many incentives/loan forgiveness programs and other things out there to help reduce the cost.