The trilogue negotiations on EU insurance legislation Solvency II, which started in September 2023 and are the last stage of negotiations to revamp the legal framework for European (re)insurers, are a key opportunity to protect insurers and citizens from climate risks. Introducing a transition plan obligation in Solvency II would push insurers to take sustainability and transition risks seriously while ensuring regulatory coherence across EU law. In addition, EIOPA should be given a clear mandate to assess whether prudential rules might need updating to reflect insurers’ exposure to sustainability risks.