Swiss Chalet is World's First Apartment Heated Exclusively by Solar Thermal

This apartment building in Upper Castle, Switzerland is the world’s first to be heated exclusively by solar thermal energy. The building borrows heavily from traditional Swiss chalet architecture with its steep roof and simple, boxy enclosure — except it is completely heated by the sun. In fact, developer Josef Jenni’s huge solar thermal roof produces twice the heat of what the building needs. Designed as the first building to use this technology at such a scale, the breakthrough apartment will serve as a model for future projects to come.

Source: Inhabitat