Located at the crossroads of an industrial urban fabric, a tertiary sector zone and protected natural areas (ZNIEFF type II), the site of the future DATA HILLS’s electrical substation (ES) in Aulnay-Sous-Bois (93) will be integrated into a complex and rich environment, with numerous environmental challenges, including the protection of the biodiversity of the neighbouring natural areas. The result is The Urban Edge© project: Electrical substation buildings in Aulnay-sous-Bois. The buildings are low-carbon and eco-designed. The ES building has a concrete structure, metalic cladding and Douglas pine wood cladding. The technical building has a timber-framed structure, insulated with wood fibre and clad in metal cladding. Roofs and infrastructure are planted with vegetation allowing them to be integrated into the natural surroundings.