The Kigali Amendment is an international agreement to phase down the consumption and production of hydrofluorocarbons (HFCs). Adopted on October 15, 2016, in Kigali, Rwanda, it is an amendment to the Montreal Protocol on Substances that Deplete the Ozone Layer. While the Montreal Protocol successfully phased out ozone-depleting substances (ODS), many of the chemicals used as replacements—HFCs—were found to be potent greenhouse gases, contributing significantly to climate change.
Background and Purpose The Montreal Protocol, initially signed in 1987, aimed to protect the Earth's ozone layer by phasing out the production and consumption of numerous substances responsible for ozone depletion. This effort led to the widespread adoption of HFCs as alternatives, particularly in refrigeration, air conditioning, aerosols, and foam blowing. However, HFCs, although not ozone-depleting, have a high Global Warming Potential (GWP), often thousands of times greater than carbon dioxide. Recognizing this emerging climate threat, the international community initiated negotiations to address HFCs under the framework of the Montreal Protocol, culminating in the Kigali Amendment.
The primary goal of the Kigali Amendment is to achieve a significant reduction in HFCs, thereby preventing a substantial amount of projected global warming. It is estimated that a full implementation of the amendment could avoid up to 0.4°C of global warming by the end of the century.
Key Provisions
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Phasedown Schedule: The Amendment sets specific, legally binding targets and timetables for both developed and developing countries to reduce their production and consumption of HFCs.
- Developed Countries (Non-Article 5 Parties): Began their phasedown in 2019 and aim for an 85% reduction by 2036.
- Developing Countries (Article 5 Parties): Are divided into two groups:
- Group 1 (e.g., China, most of Africa): Freeze HFC consumption in 2024 and aim for an 80% reduction by 2045.
- Group 2 (e.g., India, Pakistan, Iran, Saudi Arabia): Freeze HFC consumption in 2028 and aim for an 85% reduction by 2047. These differentiated schedules acknowledge the varying capacities and circumstances of different nations.
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Multilateral Fund (MLF): The Amendment utilizes the MLF of the Montreal Protocol to provide financial and technical assistance to developing countries to help them meet their HFC phasedown obligations. This includes funding for technology transfer, capacity building, and pilot projects for HFC alternatives.
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Hydrocarbon and Other Alternatives: The phasedown encourages the development and adoption of climate-friendly alternatives to HFCs, including natural refrigerants (like ammonia, hydrocarbons, and CO2) and new synthetic refrigerants with low GWPs.
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Licensing Systems: Parties are required to establish licensing systems for HFC imports and exports to monitor and control trade, ensuring compliance with the phasedown schedules.
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Exemptions: Specific exemptions are allowed for countries with high ambient temperatures, where suitable alternatives to HFCs may not yet be available or safe for critical applications.
Entry into Force and Ratification The Kigali Amendment entered into force on January 1, 2019, following its ratification by at least 20 parties to the Montreal Protocol. As of late 2023, over 150 countries have ratified the amendment, demonstrating broad international commitment to its goals.
Significance The Kigali Amendment is considered a landmark achievement in global climate action. By bringing HFCs under the ambit of the highly successful Montreal Protocol, it offers a proven framework for effective implementation. Its successful execution is crucial for limiting the rise in global temperatures and meeting the goals of the Paris Agreement, making it one of the most significant environmental agreements of the 21st century.