Sustainability Energy-Draining Lab Equipment Replaced at Universität Heidelberg
27 January 2025
Inefficient ultra-low temperature freezers are set to be replaced with new energy-saving models
To significantly reduce energy consumption in its natural and life sciences laboratories, Heidelberg University launched an equipment renewal program in early 2025. The aim is to replace older, energy-intensive ultra-low temperature freezers (ULTs) with state-of-the-art energy-efficient models. To support this exchange, the university’s Rectorate is covering 50 percent of the purchase costs.
ULTs are widely used in laboratories at Heidelberg University to cool samples and reagents to temperatures between -50 and -86 degrees Celsius. This allows for the safe short- and long-term storage of temperature-sensitive biological materials, such as DNA, RNA, viruses, sera, proteins or vaccines. However, older devices are often major energy consumers, as explained by Narasimha Sushil, Climate Protection Manager in the Division of Planning, Construction and Safety of the university administration. A case study conducted at the Centre for Organismal Studies highlighted the significant savings potential. According to the Climate Protection Manager, replacing devices at this bioscience centre alone could save up to 35,000 kWh of electricity every year – equivalent to a CO₂ reduction of 14.5 tons.
All natural and life sciences departments of the university are encouraged to participate in the renewal program and exchange old devices. The application process is overseen by the Project Office for Climate Protection and Sustainability and the Vice-Rector for Quality Development and Sustainability, Prof. Dr Karin Schumacher. A total of 12 to 16 new ULTs are set to be procured as part of the initiative, for which the Rectorate has allocated 100,000 euros in funds. Due to the energy cost savings, the investment in these new devices is expected to pay off within four years, says Narasimha Sushil.
The equipment renewal program is part of Heidelberg University’s comprehensive sustainability strategy. It reinforces other initiatives in the field of sustainable research operations, such as the “My Green Lab” international certification program. There are currently 23 laboratories at Heidelberg University participating in this program, aiming to reduce their energy, resource, and water consumption over the long term.