Overview

• Fourteen individuals and associations including l'Affaire du Siècle filed an excess-of-power appeal to the Conseil d’État on June 25, accusing the state of failing to shield citizens from climate impacts.
• Plaintiffs contend that the March-2025 third National Climate Adaptation Plan (PNACC-3) is underfunded and lacks robust measures against droughts, floods and soil subsidence.
• The 161-page legal challenge cites Article 5 of the European Climate Law and Articles 2 and 8 of the European Convention on Human Rights to demand a strengthened adaptation strategy.
• After winning a landmark climate inaction case in 2021, the group warns it may bring the dispute to the European Court of Human Rights if the Conseil d’État rejects their appeal.
• An estimated 10.4 million buildings in France face damage risks from climate-related hazards, underlining calls for policies that can effectively protect vulnerable communities.