Last week, the Department of Energy launched a plan to significantly cut the costs of new geothermal technology in an effort to expand the commercial adoption of the green power source. POLITICO’s Kelsey Tamborrino explains why geothermal energy resources have been largely untapped, how the Biden administration plans to expand its use, and which communities will most benefit from it.   Josh Siegel is an energy reporter for POLITICO.  Kelsey Tamborrino is a reporter covering clean energy. Nirmal Mulaikal is a POLITICO audio host-producer.  Raghu Manavalan is a senior editor for POLITICO audio. Jenny Ament is the executive producer of POLITICO’s audio department. Learn more about your ad choices. Visit megaphone.fm/adchoices