Global carbon market size 2018-2023

The value of the global carbon market increased two percent in 2023, to record high of 881 billion euros (949 billion U.S. dollars). The European Union Emission Trading System is the largest carbon market based on value, accounting for roughly 87 percent of the global market size in 2023. Carbon trading is the purchase and sale of credits that allow a company or entity, such as a power plant, to emit a certain amount of carbon dioxide.