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06/09/2026 15:14

First comprehensive database for Germany: Growing importance of climate lawsuits as a tool for climate protection

Christina Krätzig Abteilung 2
Universität Hamburg

    In Germany, climate lawsuits are emerging as an essential tool for achieving more climate protection. University of Hamburg sociologists Lea Frerichs and Prof. Stefan Aykut, together with legal expert Mona Andres, have created Germany’s first-ever central online database for climate lawsuits, which is now freely available. Including 221 lawsuits dating back to 2006, the platform allows NGOs, the media, academic researchers and companies to systematically research legal disputes involving climate protection and environmental law.

    “We’ve seen a marked rise in the number and variety of climate lawsuits since 2022. The spectrum ranges from suits against liquid-gas terminals or automakers, to those addressing fundamental questions on federal legislation,” says Lea Frerichs. “With the database, our goal is to offer a comprehensive overview to help users understand the patterns, successes and conflicts.” Above all, the number of lawsuits on grounds of misleading advertising – also known as climate-washing cases – and suits concerning the framework conditions offered by the federal government has increased. “Though suits against firms are most often dismissed, generally we’re seeing more and more successful suits. That’s good news for climate protection, as it means those who are to blame are increasingly being held responsible.” At the same time, the database reflects criminal proceedings against climate activists and strategic lawsuits against public participation.

    Based on the legal portal Juris, data from environmental organizations and international sources, the database is regularly updated and includes ongoing cases. “The goal of our platform is to achieve more transparency and promote informed debate on climate justice,” says Frerichs. The database was developed in conjunction with the study series Climate Transformation Outlook, an annually released report that documents the social dynamics and drivers of the transformation toward a climate-neutral society in Germany.

    Climate Lawsuits Database: https://www.wiso.uni-hamburg.de/fachbereich-sowi/professuren/aykut/klimawende-au...
    Climate Transformation Outlook study series: https://www.wiso.uni-hamburg.de/en/fachbereich-sowi/professuren/aykut/klimawende...


    Contact for scientific information:

    Lea Frerichs
    Universität Hamburg
    Research Associate Mercator Endowed Chair of Sociology, in particular Social Dynamics of Ecological Transformation
    Cluster of Excellence “Climate, Climatic Change, and Society” (CLICCS)
    University of Hamburg
    Email: klimaklagen@uni-hamburg.de

    Franziska Neigenfind
    University of Hamburg
    Cluster of Excellence “Climate, Climatic Change, and Society” (CLICCS)
    Press and Outreach
    Tel: +49 40 2395-26173
    Email: franziska.neigenfind@uni-hamburg.de


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    Business and commerce, Journalists, Scientists and scholars, all interested persons
    Law, Oceanology / climate
    transregional, national
    Research results, Transfer of Science or Research
    English


     

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