Near-surface geothermal energy
Near-surface geothermal energy utilises the energy stored in the top layers of the earth up to 400 metres or in the groundwater. The prevailing low temperatures of 8 to 12 degrees Celsius can be used in different ways to provide space heating and hot water as well as for cooling buildings. Heat pumps, geothermal energy collectors (slinkys), ground probes, energy piles or even concrete structural elements in contact with the soil are used to utilise the energy that exists in the shallow subsoil.
Charts and Data
Heat from Renewable Energy in 2010
In 2010, Renewable Energies contributed 136 bn. kWh or 9,5 % to the german heat demand.
Charts and Data
Functioning principles of a near-surface geothermal energy station
The diagram shows a near-surface geothermal energy station in schematic illustration.
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