A multi-use public building in Boën-sur-Lignon has been renovated with reduced energy consumption and integrated energy systems under the New European Bauhaus agenda.
The Céladon Centre project involves the comprehensive renovation of a former hospital site into a multi-use building including a Reception Centre for Asylum Seekers, a health centre, childcare facilities and cultural spaces in Boën-sur-Lignon, France.
The project was delivered in 2024 with a focus on reducing primary energy consumption from an estimated 400 kWhep/m² year before works to around 58 kWhep/m² year after refurbishment. Measures to achieve this included the installation of a geothermal heat pump system with 11 boreholes and solar photovoltaic panels to supply part of the building’s energy demand.
Ventilation was addressed through a double-flow system with heat recovery and nocturnal over-ventilation, while climate control was supported by radiant ceilings and reversible geothermal systems. The building’s energy systems are managed by an integrated building management system and are connected to a smart grid for self-consumption.
Retained elements such as double-glazed wooden frames also contribute to improved energy performance compared with the former structure.
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