Within the framework of the pilot project "Model home 2020", the “Sunlighthouse” in Pressbaum (Lower Austria) was built by VELUX Austria – the first carbon-neutral singl family house in Austria. From March 2012, the “Sunlighthouse” was occupied by a family that also tested its practicability. The "Sunlighthouse" was evaluated with measuring techniques (energy, heat, light, etc.) and in a socioscientific way (satisfaction of the residents, use comfort, living comfort etc.).