Climate and environmental protection have become an integral part of everyday life. Therefore, one should deal with the technologies related to renewable energies at an early stage. In order to bring this topic closer to children, fischertechnik has developed the "Green Energy" kit. It offers young researchers from the age of 9 a great start in the world of renewable energies and explains how it works in a playful way. How does climate-friendly energy generation work? How can sunlight be converted into energy with the help of solar cells? How can electricity be generated from wind with wind turbines? The answers to all these questions are revealed in this experiment box and ensure exciting aha moments.