Energy Efficiency Action Plan : Performed at Nåntuna Elementary School

Sammanfattning: The aim of this project is to examine the energy consumption of Nåntuna elementary school in Uppsala, in order to suggest improvements, making the building more energy efficient. The aim also includes calculating savings and the pay-off time for each energy reducing measure. This project is performed together with Skolfastigheter and STUNS on the initiative of Uppsala Energy Stories. The study includes an examination of the energy consumption of the building, energy calculations and a proposal of actions for improvements with cost estimations and pay-off time calculated. The conclusion includes performing following actions: installing low-flushing taps, changing to LED lighting with attendance time and daylight control, replacing the ventilation system, lowering the air flows in the ventilation and also installing solar power. Calculating both the best and the worst case scenario gives an interval for possible outcomes in the result. According to calculations, installing low-flushing taps will have a pay-off time of 1.7-2.3 years and a yearly saving of 1 300-1 800 kr, LED lighting a pay-off time of 25.5-31 years and savings of 24 700-29 900 kr per year, ventilation a pay-off time of 6-7.7 years and a yearly saving of 65 400-76 400 kr and lastly an installation of solar power a pay-off time of 5.9-9.6 years and savings of 24 000-30 000 kr per year.