Under the Climate Action Reserve’s offset protocols, projects convert quantities of non-CO2 greenhouse gases (GHGs) into a quantity of CO2-equivalent (CO2e) using the 100-year global warming potential (GWP) values from the Intergovernmental Panel on Climate Change (IPCC). Reserve protocols currently reference the Fourth Assessment Report (AR4) of the IPCC, released in 2007.
AR4 GWP VALUES
