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Geothermal heating is the direct use of geothermal energy for heating applications. Humans have taken advantage of geothermal heat this way since the Paleolithic era.Approximately seventy countries made direct use of a total of 270 PJ of geothermal heating in 2004.As of 2007, 28 GW of geothermal heating capacity is installed around the world, satisfying 0.07% of global primary energy consumption.Thermal efficiency is high since no energy conversion is needed, but capacity factors tend to be low (around 20%) since the heat is mostly needed in the winter.s of 2007, 28 GW of geothermal heating capacity is installed around the world, satisfying 0.07% of global primary energy consumption. Thermal efficiency is high since no energy conversion is needed, but capacity factors tend to be low (around 20%) since the heat is mostly needed in the winter.
Geothermal Energy. Geothermal energy represents the energy that comes from the inside Earth in the form of heat. It is the result of transfer of features of water makes its way to the surface and how heat interacts with the Earthâs interior areas. What results in the end, are steam and hot water.isadvantages of geothermal energy. As a brief history, geothermal hot springs have been used in past centuries for washing and heating homes, in 1904 the first recorded use in the production of electricity (a generator to power four light bulbs). From 1911 to 1958 there was only one geothermal power plant.