02.18 Geothermal potential: Specific conductivity and s pecific extraction capacity (Edition 2012)

The use of near-surface geothermal energy, which in Berlin means up to a maximum depth of 100 m, can draw on a wide spectrum of technological possibilities. All these procedures require heat pumps capable of increasing the relatively low temperatures of the subsoil or the groundwater at these depths, of between 8 and 11 °C, to a higher temperature level suitable for heating purposes, with the aid of mechanical or electrical energy.