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Petroleum drilling technology is now making carbon-free geothermal power.
A new technique for harvesting geothermal energy being pioneered in Utah has passed a significant milestone: Southern California Edison has contracted for enough of the energy to power 400,000 homes.
The local geology in southwest Utah makes it a prime spot for tapping underground heat, but recent mapping from the National Renewable Energy Lab shows potential for enhanced geothermal to work across much of the West and even in some eastern states, such as Mississippi, Iowa and Pennsylvania. “Theoretically, it offers a firmer, clean fuel source,” she said, “and so for utilities and grid operators that are concerned a lot about reliability and resource adequacy, geothermal has the potential to provide ... closer to 24/7 renewable.” The fact that a giant utility like SoCal Edison made this type of deal sends a message to the broader energy market about geothermal’s viability, said RMI senior principal, Uday Varadarajan.
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