Achieving the Paris Agreement’s temperature goals requires cutting global CO2 emissions 25 to 50 percent this decade, followed by a rapid transition to net zero emissions. The world is currently not yet on track so there is an urgent need to narrow gaps in climate mitigation ambition and policy. Current mitigation pledges for 2030 would achieve just one to two thirds of the emissions reductions needed for limiting warming to 1.5 to 2oC. And additional measures equivalent to a global carbon price exceeding $75 per ton by 2030 are needed. This IMF Staff Climate Note presents extensive quantitative analyses to inform dialogue on closing mitigation ambition and policy gaps. It shows purely illustrative pathways to achieve the needed global emissions reductions while respecting international equity. The Note also presents country-level analyses of the emissions, fiscal, economic, and distributional impacts of carbon pricing and the trade-offs with other instruments—comprehensive mitigation strategies will be key.

To stabilize the climate, global greenhouse gas emissions must be cut by 25 to 50 percent by 2030 compared to 2019. Such an unprecedented rate of decarbonization necessitates climate mitigation policies across countries, notably carbon pricing, fossil fuel subsidy reform, renewable subsidies, feebates, emission rate regulations, and public investments. To design and implement effective, efficient, and equitable policies, governments need tools to assess economic, environmental, fiscal, and social impacts. To support this effort, the IMF and World Bank are making their joint Climate Policy Assessment Tool (CPAT) available to governments. CPAT is a transparent, flexible, and user-friendly model covering over 200 countries. It allows for the rapid quantification of impacts of climate mitigation policies, including on energy demand, prices, emissions, revenues, welfare, GDP, households and industries, local air pollution and health, and many other metrics. This paper describes the CPAT model, its data sources, key assumptions, and caveats.

Urgent action to cut greenhouse gas (GHG) emissions is needed now. Early next year, all countries will set new emissions targets for 2035 while revising their 2030 targets. Global GHGs must be cut by 25 and 50 percent below 2019 levels by 2030 to limit global warming to 2°C and 1.5°C respectively. But current targets would only cut emissions by 12 percent, meaning global ambition needs to be doubled to quadrupled. Further delay will lead to an ‘emissions cliff edge’, implying implausible cuts in GHGs and putting put 1.5°C beyond reach. This Note provides IMF staff’s annual assessment of global climate mitigation policy. It illustrates options for equitably aligning country targets with the Paris Agreement’s temperature goals. It also provides guidance on modelling needed to set emissions targets and quantify climate mitigation policy impacts.

Asia and the Pacific’s green transition will have far-reaching implications for the global economy. Over the past decades, the region has become the engine of global economic growth. With relatively heavy reliance on coal and high energy intensity, the region has recently become the largest contributor to growth in global GHG emissions, accounting for nearly 40 percent of the total emissions in 2020. Achieving net zero by 2050 requires an energy transition at an unprecedented scale and speed, even as the region must ensure energy security and affordability. The region must also address its vulnerability to climate change as it comprises many countries highly exposed to climate hazards increasing in severity and frequency with global warming. If managed well, the green transformation in Asia and the Pacific will create opportunities for economies not only in the region, but also around the world for inclusive and sustainable growth. The global economy is still far from achieving net zero by 2050, and the Asia and the Pacific region must play its part to deliver on mitigation and adaptation goals. Understanding Asia’s perspectives on the constraints and issues with climate ambitions, climate policy actions, and constraints is central for devising climate strategies to meet climate goals. To this end, this chapter draws on novel surveys of country authorities and public in the region to distill climate ambitions and challenges faced and identify sources of major gaps in achieving mitigation and adaptation goals. Measures to help close the gaps are drawn from policy discussions with country authorities in bilateral surveillance and related studies.

This paper discusses and analyzes various international mechanisms to scale up global action on climate mitigation and address the policy gap in this area. Despite the new commitments made at COP 26, there is still an ambition and a policy gap at the global level to keep temperature increases below the 2°C agreed in Paris. Avoiding the worst outcomes of climate change requires an urgent scaling up of climate policies. Recent policy proposals include the idea of common minimum carbon prices, which underlie the IMF’s international carbon price proposal (Parry, Black, and Roaf 2021) and the climate club proposal of the German government. While global carbon prices are not a new idea, the new elements are the use of carbon price floors—which allow countries to do more if they wish—and the differentiation of carbon price floors by level of development. In the absence of international coordination, countries with ambitious climate policies are considering introducing a border carbon adjustment mechanism to prevent domestic producers from being at a competitive disadvantage due to more ambitious domestic climate policies. An interesting question from the global perspective is whether border carbon adjustment would deliver substantial additional emissions reductions or incentivize other countries to join a carbon price floor agreement.

EU’s neighborhood countries (EUN) have lagged the EU on emissions mitigation; coal-heavy power generation and industrial sectors are a key factor. They have also trailed EU countries in emissions mitigation policies since 2000, with little use of market-based instruments, and they still have substantial fossil fuel subsidies. Increasingly stringent EU mitigation policies are asociated with lower emissions in EUN. Overall output effects of the CBAM, in its current form, would be limited, though exports and emissions-intensive industries could be heavily impacted. A unilaterally adopted economywide carbon tax of $75 per ton would significantly lower emissions by 2030, with minimal consequences for output or household welfare, though a safety net for the affected workers may be necessary. To become competitive today by attracting green FDI and technology, overcoming infrastructure constraints and integrating into EU’s supply chains, EUN countries would be well served to front load decarbonization, rather than postpone it for later.

Climate change is among humanity’s greatest challenges, and the Middle East and Central Asia region is on the frontlines of its human, economic, and physical ramifications. Much of the region is located in already difficult climate zones, where global warming exacerbates desertification, water stress, and rising sea levels. This trend entails fundamental economic disruptions, endangers food security, and undermines public health, with ripple effects on poverty and inequality, displacement, and conflict. Considering the risks posed by climate change, the central message of this departmental paper is that adapting to climate change by boosting resilience to climate stresses and disasters is a critical priority for the region’s economies.

Building public support for climate mitigation is a key prerequisite to making meaningful strides toward implementing climate mitigation policies and achieving decarbonization. Using nationally representative individual-level surveys for 28 countries, this note sheds light on the individual characteristics and beliefs associated with climate risk perceptions and preferences for climate policies.

Data for a Greener World presents a structured discussion on how to measure the economic and financial dimensions of climate change. It combines economic theory and analysis with real world examples of how climate data can be constructed for different country settings, based on existing climate science and economic data. The book identifies important climate data gaps, as well as practical and innovative approaches to close many of these gaps. The book discusses how to track greenhouse gas emission by production and consumption (Chapters 1-2), which lead to physical risks (Chapters 3-4) and transition risks (Chapters 5-7) and concludes with cross-border implications of climate risks (Chapters 8-9). The book also showcases a collaboration of seven international organizations: European Central Bank, Eurostat, International Energy Agency, International Monetary Fund, Organisation for Economic Cooperation and Development, World Bank, and World Trade Organization. Chapter contributions come from leading practitioners and experts in the fields of energy and climate change issues. This volume also serves as a reference guide for the IMF's Climate Change Indicators Dashboard and future research in this area.

After several decades of increasing global economic integration, the world is facing the risk of policy-driven geoeconomic fragmentation (GEF). This note explores the ramifications. It identifies multiple channels through which the benefits of globalization were earlier transmitted, and along which, conversely, the costs of GEF are likely to fall, including trade, migration, capital flows, technology diffusion and the provision of global public goods. It explores the consequences of GEF for the international monetary system and the global financial safety net. Finally, it suggests a pragmatic path forward for preserving the benefits of global integration and multilateralism