A collaboration between the architecture firm Snøhetta, the research company SINTEF, the Zero Emission Building (ZEB) partner Brødrene Dahl and Optimera resulted in the award-winning Plus House Larvik, which is said to generate excess energy that can power an electric car annually. round. The aim was to demonstrate solutions to improve comfort while consuming less energy. The sloping roof slopes to the southeast and is equipped with solar panels and collectors which, together with the geothermal energy from ground wells, provide more than enough energy for the operation of the house. The interior design is modern and environmentally friendly, with light industrial influences and huge windows.