For the second time in a row, Team Germany’s demonstration home took first prize in the Solar Decathlon, a worldwide green building and design contest for college students sponsored by the U.S. Department of Energy. Team Germany’s 800-square-foot home was a showstopping example of how cutting-edge technology, space-saving techniques and innovative multifunction design can create a comfortable, contemporary and incredibly efficient home.

Team Germany focused on producing surplus energy and covered every exterior surface with photovoltaic panels. The team’s home scored the maximum 150 points in the “net metering” category.