Author Retains CopyrightSingh, Tanmeet2025-04-162025-04-162024-10-242024-10-24https://ir.wgtn.ac.nz/handle/123456789/32454International environmental law is failing to address contemporary challenges. In particular, within the climate change regime there is a stagnation in addressing fossil fuel phase-out. The state of international environmental law reflects the shortcomings within the normative and legal environment which prevent meaningful environmental action. This paper addresses the prospects for a coal phase-out treaty through challenging the normative and legal environment. First, the paper proposes building a strong normative basis for a coal phase-out treaty rather than focusing on consensus-based decision-making. A stringent phase-out target, by 2031 (for OECD countries, Eastern Europe and the former Soviet Union with staggered phase-outs for the rest of the world’s regions), led by the most vulnerable states allows for a change in the national interest focused environment. Second, the no-harm rule is proposed as the legal basis. Shaping the no-harm rule to apply to GHG emissions gives the treaty a basis in something more concrete than subjective political and moral considerations. At the same time, the no-harm rule itself can develop as the treaty changes state practice. Finally, the paper assesses how a coal phase-out may be implemented, and how a coal phase-out treaty can overcome normative barriers and the foster political will required to take the legal measures necessary for phase-out.en-NZAuthor Retains CopyrightCoal phase-outFossil fuelsInternational environmental lawNo-harm ruleTextAll rights, except those explicitly waived, are held by the Author