Hot Dry Rock Geothermal

Hot Dry Rock (HDR), also known as enhanced geothermal system (EGS) in a geothermal system is a condition where water is not naturally present at the site. The magma only heats dry rock on top of it. In order to tap heat from the dry rock, two wells can be drilled into the rock. One well is used to carry water from the surface down into the HDR. Once the water is heated, steam created is then channeled up through the second well into a turbine above the surface. For more information:

Geothermal Energy - Science Direct

New Mexico has opportunities in the Valles Caldera located in the Jemez Mountains volcanic field of north-central New Mexico. The Fenton Hill HDR Project is located on the western flank of the Valles Caldera volcanic complex, 22 mi (35 km) west of Los Alamos. The project itself is a proof-of-concept showing that the thermal resource stored within hot basement rocks containing no native hydrothermal fluids or permeability can be extracted by circulating cold surface waters through an engineered fracture network at depth, and then recovering the heated water for use in geothermal power production. Construction began in 1974 and the project was closed in 1995.

Fenton Hill HDR Geothermal Area - Open Energy Information