It's been a long, dark winter in Germany. In fact, there hasn't been this little sun since peoplestarted tracking such things back in the early 1950s. Easter is around the corner, and the streets of Berlin are still covered in ice and snow. But spring will come, and when the snow finally melts, it will reveal the glossy black sheen of photovoltaic solar panels glinting from the North Sea to the Bavarian Alps.
Solar panels line Germany's residential rooftops and top its low-slung barns. They sprout in orderly rows along train tracks and cover hills of coal mine tailings in what used to be East Germany. Old Soviet military bases, too polluted to use for anything else, have been turned into solar installations.