The average price to install a residential, commercial or utility-scale solar system fell sharply between 2010 and June 2017, dropping from $ 5.79 per watt to $1.54 per watt.
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Prices are in $ per watt and the 2017 figure is as of June 30. SEIA changed its methodology in 2014, switching from using the reported price to the modeled price to more accurately reflect market conditions. Utility-scale pricing represents a 50/50 blend of fixed-tilt pricing and single-axis tracker. All prices are capacity-weighted.
