The coal tax for 2014 is then set at $0.01/kilowatt-hour, which is just enough to pay the needed solar subsidy of $0.09/kilowatt-hour. Solar producers fully cover their costs of $0.16/kilowatt-hour, since they sell power to the consumers at $0.07/kilowatt-hour and receive a subsidy of $0.09/kilowatt-hour.