This act aims at the implementation of the appropriate integrated energy upgrading measures in the buildings of the Gymnasium of the special primary school of Echinos and Glafki Lyceum in order to achieve an optimal energy and environmental footprint, their emergence as standard buildings and their classification in energy class A. After the completion of the interventions, average primary energy savings of 2639 MWh per year and a reduction of CO2 emissions by 799 tn will be achieved.