Today, the utility-scale PV industry is more than 60 percent of the way to achieving SunShotâs target of $0.06 per kilowatt-hour. In the United States, the average price for a utility-scale PV project has dropped from about $0.21 per kilowatt-hour in 2010 to $0.11 per kilowatt-hour at the end of 2013.25 Million to Boost U.S. Solar Manufacturing. Over the last three years, the cost of a solar energy system has dropped by more than 50 percent â helping to give more and more American families and businesses access to affordable, clean energy.