In order to become a 2000-watt society (Swiss Federal Council's Energy Strategy 2050), the university must replace all fossil energy sources with renewable resources and drastically reduce overall energy consumption. Energy consumption per person and year must be reduced to 2000 watts of continuous power, and CO2 emissions must be reduced to one tonne. For comparison: today's average long-term consumption in Switzerland is still around 5000 watts, and average CO2 emissions are 6.5 tonnes per person.
Before the energy consumption of the campus could be optimised, reliable data providing information about the actual energy consumption of the individual buildings at all times was required. In the beginning of its operation, the Unibat team, the service unit for the operation of all buildings, collected energy consumption figures each month by hand — and evaluated the data via an Excel spreadsheet. With over 250 meters for gas, water, heat, cold and electricity, this was a cumbersome undertaking.