The purpose of this research is to explore the views of pupils of primary (6th grade) and secondary education (3rd grade of Gymnasium & 3rd grade of lyceum) of the Ionian Islands, about renewable sources and energy saving. In Greece, significant research has been carried out on renewable sources and energy saving. Their findings showed that the public as a whole has a positive attitude to energy saving and the utilization of renewable energy sources. At the same time, the contribution of RES to economic growth and society is recorded. In addition, it has been shown that the change of human behavior is considered a sufficient and necessary condition to solve the important environmental problems of our everyday life and makes students behavior; knowledge and perceptions on environment and it’s problems, an act of major importance.