Open Coalition on Compliance Carbon Markets

The Open Coalition on Compliance Carbon Markets also known as Climate Coalition, was created during the United Nations Climate Conference 2025 COP30 in Belém, Brazil. The plan aims to establish a global emissions cap starting at a level close to current emissions and then gradually reducing it until reaching net zero by 2050. For any activity that generates emissions, participants would be required to purchase allowances. As the cap declines, allowance prices would rise, creating an incentive for decarbonization. A border adjustment mechanism would also be implemented and jointly governed by all participants. Lower-income countries may pay reduced amounts or be exempt from some costs, and part of the revenue would be used to support their climate-related needs. By 15 November, 18 countries had joined including the European Union, China, Brazil. The coalition is considered as one of the main results of COP 30.