By integrating cutting-edge organic photovoltaic (OPV) technology, the seedlings become Solar Trees. The German Pavilion is the first large international architecture project to use these innovative new products. In contrast with a project using conventional solar modules, the German Pavilion architects had the opportunity to do more than just incorporate existing technology. They had free rein to design the flexible, OPV membrane modules to match their own creative ideas, and to integrate them into the overall design of the pavilion.