Abstract Summary
The extended abstract discusses the potential of High-Temperature Aquifer Thermal Energy Storage (HT-ATES) systems in storing thermal energy and bridging the supply-demand gap for renewable heat sources. A case study of an Expanded Diameter Gravel Well (EDGW) being used to reduce costs and increase capacity is presented. However, a knowledge gap exists on the stability of enlarged diameter boreholes in unconsolidated formations, and the study aims to investigate this through analytical and numerical simulations. The results will be critical for designing the EDGW field test for the HT-ATES system in Delft.