A Borehole Thermal Energy Storage system consists of a set of tubes installed in the underground, placed vertically in a borehole. Water circulates in the tubes, which allow for heat exchange with the surrounding sediment or rocks.
☀️ In summer, warm water circulates in the tubes, causing the underground around the borehole to heat up. This way, excess heat can be stored.
❄️ In winter, cold water is circulated to extract the heat from the underground. The heat can be used in district heating networks to warm houses and other buildings.
BTES is commonly applied at low temperature levels in combination with a heat pump but requires development to be used for higher storage temperature. Currently, more than one million low-temperature BTES systems are operational worldwide. PUSH-IT is developing high-temperature BTES systems (HT-BTES).
➡️ Discover the BTES pilot sites in Darmstadt (DE) and Litoměřice (CZ): https://www.push-it-thermalstorage.eu/pilots/
➡️ Learn more about the other heat storage technologies: https://www.push-it-thermalstorage.eu/technologies/
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