As part of its competence for economic development, the urban community Châteauroux Métropole wishes to rehabilitate one of the buildings of the former Balsan factory, called the building of the Clock, into a digital city, focused on innovation and the support of start-ups and companies. The project thus consists of rehabilitating the Horloge building, a historical heritage, in an exemplary way. Special care is given to the energy performance of the building with the award of the BBC Renovation label “Effinergie”. Châteauroux Métropole thus focuses this project structuring towards the energy transition by strengthening the energy autonomy of this public building and seeking to reduce its consumption.