Offsetting is a climate action that enables individuals and organizations to compensate for the emissions they cannot avoid, by supporting worthy projects that reduce emissions somewhere else.
The greenhouse gas (GHG) emissions reduced through offsetting are measured in UN Certified Emission Reductions (CERs). The CERs are generated from Clean Development Mechanism (CDM) projects. These projects, which are located in developing countries, earn 1 CER for each metric tonne of GHG emissions they reduce or avoid and are measured in CO2 equivalent (CO2-eq). The CERs can then be bought by people and organizations to offset their own emissions.