Heat supply starts from deepest geothermal borehole in Estonia

Heat Supply from Estonia's Deepest Geothermal Borehole

The Geological Survey of Estonia has initiated heat supply from a 712.5-meter borehole in Arbavere, currently the country's deepest thermal borehole.

The borehole, located in Lääne-Viru County's Arbevere village, provides heating and cooling to the Geological Survey's research center buildings.

The project utilizes a coaxial pipe, a first in Estonia, where water flows through the pipe's center, passes through a heat exchanger, and is reinjected through the annular space.

No direct quotes available in the text.

Author's summary: Estonia's deepest geothermal borehole starts heat supply.

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ThinkGeoEnergy ThinkGeoEnergy — 2025-10-13

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