Can I put in a shameless plug here?
www.nh.solar My website is relatively new and very information dense, so you may want to grab a chair and a cup of coffee.
There is a tab dedicated to costs and incentives and I think most of you will be amazed to learn how quickly the investment into solar pays off! Even with the added cost of financing a solar system, the payback period is generally only 6-7 years. A solar system will last 40+ years, so for roughly 33 years your electricity will be coming to you from your array for
free.
The "free" panels mentioned in the above posts are anything but ...in almost every circumstance they are installed through leasing and you neither own the panels nor do you get to keep the incentives. Solarcity is the main player in leased systems and has an office in Manchester, but their growth has been slow in NH
My phone and direct e-mail can be found on my website, so please feel free to contact me with any questions you might have. I'll be glad to answer them not only because solar is my chosen occupation ..it is also a passion