Certified Emission Reductions (CER)

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A Kyoto Protocol unit equal to 1 metric tonne of CO2 equivalent. CERs are issued for emission reductions from Clean Development Mechanism (CDM) project activities. Two special types of CERs called temporary certified emission reduction (tCERs) and long-term certified emission reductions (lCERs) are issued for emission removals from afforestation and reforestation CDM projects.

See also: Kyoto Protocol


Climate Neutral Now initiative website