Freiburg is famous for its solar energy. Solar panels equipped many parts of the city and its surroundings. There is a Fraunhofer Institute about solar energy in Freiburg.
This “Technische Rathaus” (Technical City Hall) is newly built, with solar panels at all the windows – a new remarkable style, like solar roofs in recent new houses.
Solar cells at Technische Rathaus – Stuhlinger, Freiburg