Challenges and opportunities for high-temperature mine thermal energy storage with focus on regulatory barriers for implementation

Mine thermal energy storage (MTES) is an innovative solution to use flooded mines to temporarily store heat during periods of low heating demand for later use during periods of high demand. Its implementation has associated technical and regulatory challenges that must be tested and understood. The PUSH-IT project is piloting the implementation of high-temperature thermal energy storage in aquifers, boreholes and mines. Two MTES sites are being assessed, a demonstration site in Bochum (Germany) and a follower site in Cornwall (UK). This paper presents a summarised review of the regulatory frameworks and barriers for MTES development in these two countries.