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Facts and Figures: Energy Conservation and Sustainability at the UoC

Following a resolution of the Senate, the University of Cologne has already begun to determine its energy consumption and CO2 balance in line with the Greenhouse Gas Protocol (GHG) and as part of its sustainability initiative in 2020. Carbon management is established firstly by determining the CO2 balance with the goal of reducing carbon dioxide emissions.

CO2 balance

The following table and figures show the current status of the determination of the emissions of the University of Cologne for the years 2019 to 2022 according to the supplier information. In this period, the UoC records a decrease in CO2 emissions of 34%. This decrease is primarily due to the switch to green electricity in 2022 and the energy-saving measures introduced in the same year.

  2019 2020 2021 2022 Changes 2019-2022
Total in tons 17.418 17.415 20.538 11.507 -34%
Per area NRF [kg/m²] 35 35 41 23 -35%
Per person [kg] 308 310 379 215 -30%
Per student [kg] 340 343 417 239 -30%

The breakdown of emissions by energy source for 2022 shows that district heating accounts for the largest share of emissions, followed by electricity. Natural gas, heating oil, vehicle fleet and drinking water play a minor role in comparison.

For the university, it can be summarized that one person (employee or student) in 2022 arithmetically causes about 0.215 t CO2e per year. These figures are put into perspective by the approximately 10.8 t CO2e per German citizen in private households statistically determined by the Federal Environment Agency (of which 2.2 t for mobility and 0.5 t for electricity).


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