Ground-coupled heat pump systems are increasingly adopted as a low-carbon solution to reduce building operational energy demand and associated greenhouse gas emissions. Energy geostructures represent an innovative approach in which underground structural elements operate simultaneously as load-bearing components and ground heat exchangers. This thesis investigates the monitored performance of two underground energy geostructures: a basement foundation slab and a wall in contact with the surrounding soil installed in the ARV Hub building and connected to a controlled heat pump system. The main objective of this research is to evaluate the thermal performance of the building by using the real operational monitoring data.