The trading of personal, corporate or national credits to maintain and gradually reduce carbon emissions. Companies, nations or individuals who beat the targets can sell the balance as credits to thos [..]

A systematic procedure for exchanging permits to produce carbon emissions. See EU ETS.

A scheme in which greenhouse emissions are controlled by setting a cap on total emissions and allowing the market sector(s) to reach an economically balanced response via trading of emissions allowanc [..]

A market-based approach that allows those with excess emissions to trade that excess for reduced emissions elsewhere

 the sale and purchase of GHG (or carbon) accounting tokens (permits and credits) including transactions and securities based on these accounting tokens.

Countries buying and selling tradable carbon or pollution permits - a fixed amount of greenhouse gases that a company is allowed to emit -  to try to reduce global carbon emissions.