Introducing children to renewable energies is more urgent than ever. After all, today's children will be the adults of tomorrow and will be most affected by changes in the climate and environment. To enable them to actively engage in sustainability and conservation, they need a solid understanding of energy and climate protection, which can already be taught in kindergarten. This practical guide offers numerous suggestions and background information; it can be used in kindergartens as well as by teachers, parents, or grandparents for sustainability education.