Echirolles Town Hall

Echirolles (France)
Echirolles Town Hall 

Concluded in September 2006


Leading case typology

   Leading case function



   Industrial, services, etc.

Main Targets 

  • Achieve a high environmental quality building that displays a distinctive set of bioclimatic solutions, passive ventilation, natural lighting and energy management systems;
  • Limit energy waste on building heat exchange surfaces reducing the need for heating by 28% and reducing air conditioning by 14%;
  • Achieve high levels of brightness to favour working conditions and exchanges of natural lighting in order to provide a factor light of greater than 1.5% on the day work plan offices, meeting rooms, board room and ticket hall.

The architectural and urban integration of this building was achieved through a building set back, a scale break with the buildings proximity, and the access areas treatment. These elements created a central bond between town hall/central square and ensured the building’s monumentality.

Despite the HQE certification has not been executed, the building brings a distinctive set of solutions of bioclimatic architecture, particularly in terms of passive ventilation and natural lighting, but also in terms of energy management systems.

Project Details

The bioclimatic architecture solutions are evident and visible throughout the building, particularly in terms of ventilation and natural lighting passive solutions, which allow a proper temperature regulation, humidity renovation and a good internal air quality. An exemplary constructive solution has been adopted to achieve all the aspects mentioned above, with the inclusion of a glassed atrium that will act as an internal temperature regulator and will control the balance between thermal losses and inner and outer gains.

The energy management and the relationship of the general consumption of the building is controlled by a BMS ( building management system ) central control, while the lighting is managed according to the intensity of solar radiation and the presence of a multi-sensor installed on each office. The offices overlooking the atrium are equipped with shading systems for the diffusion of natural light while preserving privacy and indoor working conditions.

The awareness component of the municipal staff was also a success factor for achieving a level of energy efficiency reference due to placing multi-sensors to regulate ventilation, heating and lighting in spaces occupied by employees in order to encourage their use in an efficient and responsible manner.