Students from 72 schools played the ‘Roofs in the Sun’ game in Croatia.
Using Google maps, players mark roofs, and the game shows their solar potential.
The winning school is awarded with a prize consisting in a solar kiosk, a mobile solar system, and a performance is given by beatboxer Surka.

Video shows the ceremony and the solar concert for the winning school - Elementary School Jože Šurana from Višnjan, Istria region in Croatia.