An Erasmus + KA2 project in which we are three partners: Silverberg Gymnasium (Bedburg, Germany); St St Kyril and Medotiy High School (Velingrad, Bulgary) and IES Joaquín Rodrigo (Madrid, Spain). Our priority is to improve achievement and transversal competence in a lifelong learning perspective and tackle early school leaving. We focus on alternative energies: not only our students are well aware of these matters, they take an active part to save energy, to analyse and spread the information, to contribute to different solutions.