The two longer sides of the rectangular house consist of eight glass panels each, four of which are sliding doors. This ensures maximum daylight intake and openness. They are organised in such a way that each living space has access to one of the three different terraces. Each glass panel corresponds to a moveable facade element. The aggregate 14 modules have two parts: the upper part is covered with photovoltaic modules and the lower part consists of a wooden shuttering. When they are open, they become an extension of the roof both inside and outside, following the slight angles of the ceiling.
When the owner is not at home, the automation of the house system adjusts the façade to track the sun to maximize solar power intake. Should the inhabitants be present, they can choose to adjust each façade element in any way they want.
The facade not only reacts according to the course of the sun but also to seasons. Our house opens up in summer, with its widely overhanging roof elements providing shade in daytime while allowing the house to cool at night. In wintertime, the façade elements will mostly be opened in order to maximise passive solar gains, closing only at nighttime. Then the facade elements fold down, creating a preserving shell around the house and thereby insulating it further.