Re:Powerwall 2 and Integrated Solar
by toomuchtodo on Friday October 28, 2016 @09:25PM
(#12822110)
You also now get a 30 percent tax credit to replace your roof. Before, you'd be entirely out of pocket for the roof, separate from the solar install.
This is big. My roof cost nearly double what my solar installs did, and getting the tax credit on the roof might have paid for the additional cost of the solar tiles over standing seam metal. (Not that I don't love the metal; it's awesome.)
So, yes, there are assumptions in there: how much power can be generated, how valuable will it be 10 years from now, etc.