California Air Resources Board

To help reduce additional and preventable global warming, a global phase-down in the production and consumption of hydrofluorocarbons (HFCs) was agreed to by more than 150 nations on October 15, 2016 in Kigali, Rwanda. The intent of the phase-down is to reduce emissions of potent HFC greenhouse gases with a high global warming potential (GWP) and prevent up to 0.5 degrees Celsius of global warming by the end of this century. The global HFC phase-down agreement, commonly known as the “Kigali Amendment” or the “Kigali Agreement” became an amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer when it passed the 20-country ratification threshold on November 17, 2017. CARB conducted an analysis, described in this document, to determine if the global HFC phase-down schedule of the Kigali Amendment beginning 2019 was sufficient by itself to allow California to meet its SB 1383 emissions reductions goals, without additional reduction measures nationally or in California.