According to the existing European benchmark studies [17-25], the electricity consumption values of schools vary from 10 to 30 kWh/(m2a). The minimum value of 10 kWh/(m2a) found in Ger- man primary schools [17] can be explained by the very low level of technical equipment and the fact that here artificial light uses the majority of the energy.
conditions (heating degree days, floor area, etc.) were used.