The building was built in Trondheim, Norway, and is built on the basis of a power plant that collects solar energy and the entire building Designed for businesses and offices. It has been termed Europe’s most energy-positive building. This environmentally friendly and durable building has excellent insulation system on one hand and ventilation on the other hand has a great heat reuse system and building. A pump has been installed to keep cool and draw water from the nearby sea and keep the building cool. The rainwater collected on the roof is used in the toilet. The bulbs in it only burn when one is in the room and an advanced system controls the use of electricity.