ATES systems use two or more groundwater wells: hot wells and warm/cold wells.
☀️ During summer, water is extracted from the warm/cold well and heated, for example using geothermal energy. Then, the hot water is injected into the hot well, where it is stored.
❄️ During winter, heat is extracted from the hot well, and can be used to heat buildings in a district heating grid. When the heat is used, the water is pumped back into the warm/cold well.
ATES systems commonly operate at low temperature in combination with a heat pump. Heat storage at higher temperature levels in ATES has large potential but requires development of the technology before large scale adoption is possible. PUSH-IT is developing high-temperature ATES (HT-ATES) systems. Currently, there are less than ten HT-ATES operational world-wide, compared to more than 3000 low-temperature ATES systems.
➡️ Discover the HT-ATES pilot sites in Delft (NL) and Berlin (DE): 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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