What is geothermal energy?

Geothermal energy is thermal energy generated and stored in the Earth. The heat originates from the initial formation of the Earth and by radioactive decay of elements in the Earth’s core. Temperature differences between the core and the Earth’s surface drives a continuous conduction of thermal energy in the form of heat from the core to the surface.

The heat is not equally distributed over the Earth’s surface. For instance, in Iceland temperatures of more than 200°C are observed at roughly 1000 m depth. In the Netherlands temperatures in the range of 40 °C are measured at comparable depth.

Geothermal energy is a sustainable way of energy use as heat is constantly generated. Cooled rock will be reheated over time after it has been cooled down. Geothermal energy can effectively supply humanity’s energy need and can be utilized for heating greenhouse, spatial heating or generate electricity. Even in the Netherlands!

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