The disaster at Japan’s Fukushima nuclear power station has made eminently clear that mankind has to look for alternative ways of meeting its energy needs – and quickly. Because demand for energy continues to rise. Today, every second person on the planet lives in a city. In Europe, this figure has passed the 70 percent mark. Urban centers around the globe account for over three quarters of worldwide energy consumption. That’s why the experts are working all-out on developing so-called “Metropolitan Solutions” – environmentally friendly energy supply and utility services concepts for today’s large urban centers.