Around the world, countries are developing ways to put a price on carbon to fight climate change. They are choosing different approaches depending on their national circumstances. China has pilot emissions trading systems (ETS) in seven provinces and cities and is planning a national ETS in 2016. Chile recently approved a carbon tax to start in 2018. Mexico and Colombia are implementing sector-wide crediting mechanisms that reward low emission programs with carbon credits, for example in the transport sector by substituting conventional vehicles with electric cars. Many countries have renewable energy portfolio standards and feed-in tariffs.
These domestic initiatives are crucial to lowering greenhouse gas emissions. Each is being designed individually, though, creating a patchwork of regulations and missing the economy of scale that a connected system could bring.
The World Bank Group has been working on ways to network these initiatives and facilitate an integrated international carbon market.