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An Oak Ridge National Laboratory study projects how geothermal heat pumps that derive heating and cooling from the ground would improve grid reliability and reduce costs and carbon emissions when widely deployed. Credit: Chad Malone, ORNL, U.S. Dept. of Energy

A modeling analysis led by ORNL gives the first detailed look at how geothermal energy can relieve the electric power system and reduce carbon emissions if widely implemented across the United States within the next few decades. 

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The Department of Energy's Oak Ridge National Laboratory and the Tennessee Valley Authority are testing an electric ratepayer's dream „ a "frostless" heat pump that produces warmer air than conventional air source heat pumps, especially during the defrosting cycle and at lower overall cost. A heat p...