ENERGY BASICS: geothermal
Geothermal energy, which exploits heat emanating from the earth’s core, provides a sliver of total energy generation in the U.S.: 0.4 percent of utility-scale generation of electricity was produced by geothermal sources, according to the Energy Information Administration.
But experts see significant opportunity for growth in use of geothermal.
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Geothermal 'battery' repurposes abandoned oil and gas well in Illinois, researchers report
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Geothermal Technologies Office (DOE): Geothermal basics
Energy Information Administration: Geothermal explained