A climate club is a coalition of the willing among countries that wish to adopt more stringent climate mitigation policies. Sometimes the term is used loosely to refer to any such international climate alliance. However, the concept of a climate club has most famously been promoted in a stricter sense by
William Nordhaus, winner of the 2018
Nobel Memorial Prize in Economics. In his conceptualization, the climate club introduces
carbon pricing among the club's member states and levies a fee on all imports of goods from countries that are outside the club and have not introduced similar carbon pricing. This is expected to encourage more countries to join the club and introduce carbon pricing. A 2025 paper in
Econometrica found the kind of climate club that Nordhaus advocated for, with border taxes to deter free-riding, "can achieve 33–68% of the globally optimal carbon reduction, depending on the initial coalition (EU, EU + US, or EU + US + China)." The G7's version of the Climate Club differs slightly, focusing on partnerships and cooperative approaches rather than punitive measures. The idea of a Climate Club originated from efforts to bridge the gap between developed and developing nations in
climate action. Spearheaded by the G7, particularly under the leadership of Germany's
Chancellor Olaf Scholz, the initiative was announced in December 2022 during the
G7 summit. It is designed to foster international cooperation in
decarbonization while avoiding protectionist trade policies and
carbon leakage (the relocation of carbon-intensive industries to countries with looser regulations). Furthermore, it is invisigaged that trading partners support each other in the transformation of the industrial sector, in the production of hydrogen, ammonia, crude petrol, methanol and synthetic fuels. == Structure and Membership ==