National median installed prices in 2015 declined year - over-year by $ 0.2 per watt (/ W), or 5 %, for residential systems, by $ 0.3 / W, or 7 % for non-residential systems of less than 500 kW, and by $ 0.3 / W, or 9 %, for non-residential systems of more than 500 kW.
These benefits accrue to less affluent regions: 70 percent of wind capacity is
installed in counties below the
median average
national income, and property taxes from wind farms provide millions for local schools and other services.