Kassel's Water Supply to Gain Climate Resilience via €2.6M 'Flexilience' Project
Kassel's water supply is set to become more climate-resilient, thanks to the 'Flexilience' project. Led by the University of Kassel and backed by €2.6 million from the Federal Ministry of Education and Research, this collaborative research aims to ensure reliable drinking water under climate stress. The project began in March 2025, involving various institutions and companies.
The 'Flexilience' project focuses on the Habichtswald and Kaufunger Wald spring waters, which are facing decreasing yields due to climate change. It will test an innovative 'ultrafiltration plant' to filter turbid spring water without pumps, saving energy. The project also seeks to integrate with water hydrogen production and demonstrate energy-saving and storage potential.
The research consortium, including the University of Kassel, Kassel Water Utility, Fraunhofer IEE, Technology Centre for Water TZW, EnWaT GmbH, Oppermann GmbH, and others, aims to investigate using pumping and storage systems as energy storage. Additionally, they plan to test producing hydrogen from filter backwash water using an electrolyzer and special filter membrane, making previously unusable water useful.
The 'Flexilience' project, set to run until 2028, aims to provide transferable results for water suppliers throughout Germany and Europe. By making Kassel's water supply climate-resilient, the project seeks to mitigate the effects of drought and ensure a reliable water supply for the city and its residents.
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