The utilization of the natural heat found beneath the earth’s surface at depths of between 400m and several thousand meters. Compared to near-surface geothermal energy, the temperatures at these depths are far higher and can thus be used to generate electricity and heating. The temperatures are also sufficiently high that the thermal energy can be used directly without heat pumps.
Deep geothermal energy
August 1, 2021 SMART CITY GLOSSARY