Imagine if there was a carbon-free form of energy hiding in the ground beneath you. One that we could turn to anytime, even on cloudy, windless days.
There’s no need for imagination: It exists. Research suggests that geothermal energy could be the key to running the country on purely renewable power. A recent memo from the conservative clean-energy think tank ClearPath estimates that geothermal energy could supply as much as 20 percent of the country’s electricity. That would put the United States nearly on par with Iceland, which gets roughly a quarter of its power from underground heat. But getting there depends on loosening regulations and borrowing drilling techniques from the oil and gas drillers.
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