Many US new homes come with solar panels built in from Digital Journal Oct 1 2013

Solar panels are now a standard option for new homes in some US markets. The panels are especially popular in California with two California towns actually mandating installations.

Six of the ten largest US homebuilders include solar panels as an option in new construction led by KB Home. According to the Solar Energy Industries Association, demand for the systems will increase by 56 per cent this year alone. . . .

http://www.digitaljournal.com/article/359355