A price on carbon emissions: What makes states adopt carbon pricing policies?

Carbon pricing (carbon taxes and emissions trading systems) has environmental and fiscal benefits and is advocated by powerful economic actors. Yet, the adoption of carbon pricing policies has been slow, and multilateral climate agreements cannot explain neither when nor which countries adopt carbon pricing policies (Northern Europe in the early 1990s, Latin America and East Asia in the 2010s). The project will identify which factors influence states to adopt carbon pricing policies by mapping the states and subnational entities having adopted such policies and by explaining the adoption of carbon pricing in Sweden and Mexico drawing on theories of policy diffusion and policy processes.