Though US president Donald Trump has promised many times that he will bring back coal, he really can’t do much to fight the forces of good old economics. On Tuesday (Sept. 12), the US Department of Energy announced that utility-grade solar panels have hit 2020 cost targets three years early. Utility-scale solar now averages around $1 per watt (the cost of the hardware’s electricity generation capacity) and $0.06 per kilowatt-hour (the cost of the electricity consumed), targets set in 2001 by the DOE’s SunShot Initiative.
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