The RE-SKIN project started in January 2023 and will run for the next four years! The project aims to develop a multifunctional package capable of transforming an existing, energy-intensive building into a modern, efficient and, above all, sustainable structure. Integrating ICT, renewable energy, sustainable materials, and new-generation installations, RE-SKIN offers a holistic and systemic solution for the energy retrofit and smart upgrade of residential, commercial and public buildings. The system’s special configuration and flexibility make it suitable for application all over Europe.