The head office of the company Abalone (human resources management) is really close to the zero energy level and should in the future have an over energetic production of 18.3 kWh/m²a. The construction works started in 2006. The building is located near Nantes (France). The design optimizes the thermal inertia (double coated elevation, thermal losses reduction…) and integrates a large panel of renewable energy solutions (wind turbines, solar power and hydrogen). In the future the electricity produced on site should allow the production of hydrogen. Stored, this hydrogen could be used in a fuel cell to supply heat and electrical power.
2 wind turbines models :
- 3 wind turbine free standing (height 15 m – power 10 kW (each)) for a total yearly production of 45 MW/a)
- 3 roof top wind turbines (height 3 m) total yearly production : 15 MWh/a
Photovoltaic panels : 80 m² – yearly production 2 MWh/a
Thermal solar power used directly in the building for heating and domestic water.
Air cooling : earth-to-air heat exchanger
Ventilation : heat recovery system
Water rain is recovered and re used in for washroom facilities.