Plus-energy House in Timber Construction
The first plus-energy house in Switzerland produces the energy for heating, hot water and household electricity itself by means of a photovoltaic system. The energy it does not require is fed into the local electricity grid - just like a small power station. This surplus energy is made possible through a whole series of measures, from an energy-efficient timber-frame construction and air-tight building shell, a low thermal bridge design and active and passive use of solar energy right through to efficient and energy-saving household appliances. This exemplary project was funded by the Office for Environment and Energy of Basle City and executed as part of the "2000-Watt Society – Pilot Region Basle". In 2008, it won the Swiss Solar Prize.
Object Data
| Construction method | Timber frame construction |
| Energy procurement area | 315 m² |
| Occupied | February 2008 |
| U-values | Exterior wall: 0.111 W/m²K, roof: 0.109 W/m²K, floor: 0.100 W/m²K, window: 0.840 W/m²K |
| Energy requirement | 42.3 kWh/m²a |
| Energy balance 2008 | Consumption: 22.4 kWh/m²a Generation: 58.7 kWh/m²a Surplus: 36.3 kWh/m²a |










