Passamonti, AriannaAriannaPassamontiBombarda, PaolaPaolaBombardaStrozyk, FrankFrankStrozykHahn, FlorianFlorianHahnBracke, RolfRolfBracke2023-03-172023-03-172022https://publica.fraunhofer.de/handle/publica/437774A pilot plant for high temperature heat pumps (HTHP’s) combined with high temperature mine thermal energy storage (HT-MTES) is developed at the Fraunhofer IEG location of Bochum. The aim of the plant is to inject renewable heat into the district heating (DH) grid. The HT-MTES is a seasonal thermal storage: heat is injected during the summer and successively extracted during the cold season. A HTHP, hydraulically connected to the storage, transfers heat to the DH grid.enhigh temperature heat pummine thermal energy storageCO2 reductionconference paper