The kick-off meeting of the project, which is funded under the Driving Urban Transition 2023 call, supported by the European Commission and financed with funds from the Horizon Europe program (g.a. 101069506), was held remotely on December 2nd, 2024. The meeting was attended by representatives of the 17 REGENERATE partners, from Austria, Italy, Germany and Romania, the four countries involved in the project. This international cooperation will allow to study different types of climates, urban environment, building heritage, different energy needs and underground spaces. The possibility of transforming existing underground spaces into energy production and storage systems will be assessed through monitoring in pilot sites and its potential quantified through advanced numerical modeling.