TESSERACT – Thermal energy storage as sensible energy reservoir in activated terrain

As part of the TESSERACT project, an interdisciplinary team led by AEE INTEC is developing scalable underground high-temperature storage (UHTS) systems for different geohydrological conditions and
system integrations.
For the first time, naturally formed soil is being used as the storage medium.
This should significantly accelerate the construction of the storage facility, reduce costs, and enable scalability. The underground structures are designed and tested for temperature levels The underground construction methods are designed and tested for temperature levels up to 500 °C. This enables wide application in existing energy supply systems, e.g., in industry or the building sector. Another advantage of the planned UHTS is that the storage surface can be used multifunctionally (e.g., for building development).