[sakigt]

Id do it, but only in a home Id plan on living in for more than 15 years. I dont think 10 would be worth it, although you would probably be able to get the costs back in the selling price.

You would also need to consider how much you can invest 15,000 for over 10 years. Personally, I would discount this part of the equation due to the envioronmental benefits using solar energy would provide.