Energy Saving Concept for 1,000 Buildings of the 'Landeshauptstadt Munchen' (Capital City of Munich)

Abstract

The Capital City of Munich spends more than 40 million Euros (~50 million US$) annually for the supply of heat, electricity and water to its own buildings. This amount for energy consumption equals a production of carbon dioxide of approximately 110,000 tons per year. Due to the agreement to the "Bündnis zum Erhalt der Erdatmosphäre“ (alliance for the preservation of the earth's atmosphere), the city is obliged to reduce its CO2-emission by 30 % until 2005 (on the basis of the year 1987). The municipal buildings' CO2-emissions in conjunction with heating supply has been decreased by 20 % already from 1987 to 2000. In a project unique of scale till now, 1,000 buildings - corresponding to about 50 % of the entire municipal building stock - have been examined closely and systematically within two years to identify potentials for energy savings. This paper shows the methodology that was developed for a time efficient survey of such a large number of buildings, as well asthe results of the project.