Throughout the Energy Performance of Buildings Directive (EPBD) it is requested that ""the public sector in each Member State should lead the way in the field of energy performance of buildings"" and ""buildings occupied by public authorities and buildings frequently visited by the public should set an example"". New buildings occupied and owned by public authorities shall be Nearly Zero-Energy Buildings (NZEB) two years earlier than all other types of new buildings. Among the most promising public building types to act as lighthouse projects are educational buildings including school buildings. They are visited by different age groups like pupils, teachers and parents. Furthermore, educational buildings are often used for providing lectures on energy efficiency and environmental awareness, showcasing actual improvements of the buildings' envelope and the buildings' own technical services systems, as well as on how to support energy savings by responsible user behaviour.