Just fyi- I've been spending enitrly too much time online looking for this exact thing! All I found were a bunch of scams, so be very careful. I also want to note that the build your own kits, few actually work, or work the way you are told they will. So do your research before you spend your hard earned money! I did just look at your link and it looks like the real deal, but as all my solar and wind knowledge has been so recently acquired, I would still say follow up before you jump in and spend money on anything. Good luck and if you try it and do it, let me know how well it worked and the kinks, and I'll do the same!