COP31 2026: Everything to Know About the UN Climate Summit

What Is COP31 and Why Does It Matter?

In 2026, governments will gather for COP31 with the planet still far off the Paris Agreement’s safer path: the UN Environment Programme’s Emissions Gap Report has warned that current policies point toward roughly 2.8°C of warming this century, while existing pledges still leave the world around 2.3°C to 2.5°C under optimistic assumptions, and recent trajectories have often been summarized in the 2.6°C to 2.8°C range.

COP31 is the 31st Conference of the Parties to the UN Framework Convention on Climate Change, the annual summit where nearly 200 governments negotiate the rules, finance, timetables and political signals that shape global climate action. The Paris Agreement’s central target is to hold warming to “well below” 2°C and pursue efforts to limit it to 1.5°C above pre-industrial levels. That 1.5°C threshold is not a slogan. The Intergovernmental Panel on Climate Change has found that every fraction of a degree increases the risks of deadly heat, crop failures, sea-level rise, ecosystem loss and extreme rainfall.

COP31 matters because it lands at a decisive point in the Paris cycle. Countries are expected to arrive with new or updated national climate plans, known as nationally determined contributions, or NDCs. These plans are meant to show how each country will cut emissions through 2035 and, in many cases, how they will adapt to locked-in climate impacts.

The numbers are stark. The IPCC has estimated that global greenhouse gas emissions must fall by about 43% by 2030 from 2019 levels to keep 1.5°C within reach, followed by a roughly 60% cut by 2035. Instead, global carbon dioxide emissions from fossil fuels have remained near record highs. The Global Carbon Project estimated fossil CO2 emissions at about 37 billion tonnes in 2023, and preliminary assessments since then have shown no sustained global decline.

That gap between diplomatic promise and physical reality is the core tension of COP31. The summit will not solve climate change in two weeks. No COP ever has. But it can determine whether governments strengthen the machinery that drives emissions down: power-sector reform, methane rules, finance for poorer countries, fossil fuel transition language, adaptation plans and accountability for national targets.

COP31 is also politically loaded because the world is no longer arguing only about the science. The science is settled enough for policy. The hard question is distribution: who cuts first, who pays, who builds the new energy system, and who absorbs the losses when climate impacts outrun preparation.

COP31 Agenda: Key Topics and Priorities

By the time delegates arrive at COP31, global clean energy investment will be running at historic highs, yet fossil fuel spending will still be large enough to lock in future emissions. The International Energy Agency has reported that clean energy investment is now roughly twice the level of fossil fuel investment, with global energy investment around $3.3 trillion in 2025, including about $2.2 trillion for clean energy and around $1.1 trillion for fossil fuels.

That split captures one of COP31’s central agenda items: the energy transition is moving, but not yet at the pace or shape required for 1.5°C.

The first major priority will be the next generation of NDCs. The UNFCCC has repeatedly warned that current national plans do not add up to the Paris goals. Simon Stiell, the UN climate chief, has urged governments to treat new NDCs as national investment plans rather than diplomatic paperwork. At COP31, countries will face pressure to show sector-by-sector credibility: coal retirement dates, renewable buildout targets, grid expansion, methane cuts, electric vehicle policies, industrial decarbonization plans and land-use protections.

Finance will be just as central. At COP29, countries agreed to a new collective quantified goal for climate finance, setting a target of at least $300 billion per year by 2035 for developing countries, with a broader call to scale all sources of climate finance to $1.3 trillion per year. Many developing countries argued that $300 billion was far below need, especially when adaptation, debt distress and loss and damage are counted. COP31 will test whether the finance goal becomes a real pipeline of grants, concessional loans and private capital, or another under-delivered promise.

Adaptation will be a major battleground. The UN Environment Programme’s Adaptation Gap Report has estimated that developing countries need hundreds of billions of dollars annually for adaptation, far above current flows. This matters for countries already living with climate damage: Pakistan’s 2022 floods caused losses and damages estimated at more than $30 billion; small island states face existential sea-level risks; African countries are losing GDP growth to drought, heat and crop stress despite contributing a small share of historical emissions.

Loss and damage will also return. The loss and damage fund, agreed after years of pressure from vulnerable countries, began receiving pledges after COP28, but early commitments were modest compared with projected needs. The question for COP31 will be whether the fund can move from symbolic justice to reliable support after storms, floods, droughts and slow-onset disasters such as salinization and coastal erosion.

Methane deserves special attention. Methane has more than 80 times the warming power of CO2 over 20 years, and cutting it is one of the fastest ways to slow near-term warming. The Global Methane Pledge aims to reduce global methane emissions by 30% by 2030 from 2020 levels. COP31 will likely scrutinize oil and gas methane leaks, livestock emissions, landfill methane and satellite-based monitoring.

Forests and food systems will also be on the table. Brazil’s COP30 presidency elevated forests because the Amazon stores immense carbon and shapes regional rainfall. COP31 will inherit that agenda: how to protect tropical forests while supporting rural livelihoods, Indigenous land rights and agricultural exports.

What Happened at COP30 and How It Shapes COP31

COP30 in Belém, Brazil, put the Amazon at the center of climate diplomacy, turning the summit into a test of whether governments could connect global emissions targets with land, forests, food and development.

Belém mattered symbolically and practically. Hosting the summit near the Amazon highlighted the contradiction facing many forest-rich countries: they are asked to protect ecosystems that benefit the entire planet, while often receiving far less finance than the economic value of converting land to cattle, soy, mining or infrastructure. Brazil promoted forest protection and sustainable development as core themes, including efforts to raise large-scale finance for tropical forests.

COP30 also came after the first global stocktake under the Paris Agreement, completed at COP28, which called on countries to transition away from fossil fuels in energy systems, triple global renewable energy capacity by 2030, and double the rate of energy efficiency improvement. COP30’s job was partly to keep that language alive and partly to push it into the next round of national plans.

The summit exposed a familiar split. Vulnerable countries and many climate advocates wanted a clearer roadmap for phasing out fossil fuels. Fossil fuel-producing countries resisted language that could constrain oil and gas expansion. Major emerging economies argued that rich countries cannot demand faster transitions while failing to provide finance and technology on fair terms. Developed countries pointed to rising emissions in large emerging economies and called for broader responsibility.

That argument will shape COP31. The world’s emissions profile has changed since the original UN climate convention was signed in 1992. China is now the largest annual emitter, the United States remains the largest historical emitter, India’s emissions are rising as its economy grows, and the European Union has cut emissions while still importing carbon-intensive goods. Fairness is no longer a simple North-South slogan. It is a negotiation over history, capacity, current emissions and future development rights.

COP30 also sharpened scrutiny of implementation. Governments have made many high-level promises: end deforestation, cut methane, triple renewables, shift finance, phase down coal, transition away from fossil fuels. COP31 will ask a harder question: what has actually changed in national law, permitting systems, subsidies, public finance and infrastructure?

The IEA has shown how quickly the clean-energy economy is growing. Solar deployment has repeatedly exceeded forecasts, battery prices have fallen sharply over the past decade, and electric vehicles have moved from niche products to a major part of auto sales in China and Europe. Yet coal consumption has remained resilient, oil demand has not fallen fast enough, and new gas infrastructure continues to attract capital.

That mixed picture is the bridge from COP30 to COP31. The story is no longer whether a transition has started. It has. The story is whether the transition can outrun new fossil fuel development, rising energy demand and political backlash.

Major Countries and Blocs to Watch at COP31

China installed more solar capacity in a single recent year than many countries have built in total, yet it also remains the world’s largest coal consumer. That contradiction makes Beijing one of the most important actors at COP31.

China’s position will be watched for three reasons. First, its emissions are the world’s largest in annual terms. Second, it dominates clean-energy manufacturing, including solar panels, batteries and parts of the electric vehicle supply chain. Third, its 2035 climate target will heavily influence whether the global emissions curve bends before 2030. If China commits to an absolute emissions reduction pathway and faster coal control, COP31 could gain real momentum. If its target is cautious, the global gap will widen.

The United States will be another pivotal player. The U.S. remains the largest historical emitter and a major oil and gas producer. Its climate policy has swung sharply depending on domestic politics, creating uncertainty for allies, investors and developing countries. U.S. credibility at COP31 will depend on federal policy, state-level action, methane regulation, clean-energy deployment and whether Washington can contribute meaningfully to international finance.

The European Union will likely push for stronger mitigation language. The EU has cut emissions significantly from 1990 levels and uses policy tools such as carbon pricing, clean industry programs and the Carbon Border Adjustment Mechanism. But it faces pressure over energy prices, industrial competitiveness and farmer protests. At COP31, the EU will try to defend high ambition while proving that climate policy can survive democratic stress.

India will be central because of scale and development. Its per-capita emissions remain far below those of the United States, Canada or Australia, but its total emissions are rising as hundreds of millions of people seek higher living standards. India has ambitious renewable energy goals and a large solar program, yet coal remains deeply embedded in electricity and jobs. Expect India to argue for equity, finance and technology transfer while resisting pressure that appears to cap development.

Small island developing states will bring moral clarity and legal urgency. For countries such as Tuvalu, the Marshall Islands, Barbados and Antigua and Barbuda, 1.5°C is tied to physical survival. Sea-level rise threatens homes, freshwater supplies, burial grounds and sovereignty. These countries have consistently pushed the COP process toward stronger targets, loss and damage finance, and recognition that adaptation has limits.

African countries will also be influential. Africa has contributed only a small share of cumulative global emissions, yet it faces severe climate risks: drought in the Horn of Africa, flooding in West and Central Africa, crop stress in the Sahel, and debt burdens that limit adaptation spending. Many African governments will argue for climate finance that supports grids, clean cooking, climate-resilient agriculture and industrial development rather than narrow project-based aid.

Oil and gas exporters, including members of OPEC and other fossil fuel-dependent economies, will try to shape language on transition pathways. Their influence matters because COP decisions are consensus-based. A small group of countries can weaken or block text that names fossil fuel production directly.

COP31 and the Paris Agreement Stocktake

The first Paris Agreement global stocktake found that the world was not on track, and COP31 will test whether that finding changes national behavior or remains a diplomatic warning label.

The stocktake is the Paris Agreement’s accountability mechanism. Every five years, countries assess collective progress on mitigation, adaptation and finance, then use the findings to strengthen their next NDCs. The first stocktake, finalized at COP28, was blunt: global emissions are too high, finance is insufficient, adaptation is underfunded, and the window for 1.5°C is narrowing.

COP31 sits in the implementation phase after that first stocktake. Countries cannot credibly say they lack information. The IPCC has mapped the emissions pathways. UNEP has quantified the gap. The IEA has shown what clean-energy deployment must look like. The World Meteorological Organization has documented record heat, ocean warming and extreme weather indicators. The question is political execution.

The emissions gap is the clearest measure. UNEP has estimated that to align with 1.5°C, global emissions in 2030 must fall dramatically below current-policy projections. The gap is often measured in gigatons of CO2 equivalent, not vague ambition. A single gigaton is one billion tonnes. For comparison, Japan’s annual greenhouse gas emissions are roughly around one gigaton CO2 equivalent. When UNEP describes a multi-gigaton gap, it is describing the equivalent of several major economies’ emissions still missing from the plan.

Current NDCs are not enough. UNFCCC synthesis reports have repeatedly shown that submitted pledges bend the curve only modestly compared with what the Paris temperature goals require. IPCC scientists have made the same point in plainer scientific terms: policies implemented by the early 2020s were projected to lead to warming well above 1.5°C during the 21st century, and only rapid, deep, sustained emissions cuts across all sectors can change that outcome.

COP31 will therefore be judged by whether new NDCs are investable and enforceable. A strong NDC should include absolute emissions targets, sector policies, methane measures, land-use protections, finance needs, adaptation plans and transparent assumptions. A weak NDC will rely on distant net-zero claims, accounting flexibility, offsets and conditional promises without domestic policy.

The stocktake also raises a fairness question. Rich countries built their wealth using fossil fuels and have greater fiscal capacity to decarbonize. Developing countries need energy, infrastructure and climate resilience. COP31’s challenge is to connect ambition with support so that countries can cut emissions without slowing poverty reduction.

The Role of the Private Sector and Civil Society

In 2025, the IEA estimated that clean energy attracted about $2.2 trillion in investment, a figure larger than the GDP of many G20 economies, while fossil fuel investment still stood near $1.1 trillion. That makes investors, utilities, banks, insurers and manufacturers central players at COP31, even though governments sign the final texts.

The private sector’s role is practical. Governments can set targets, but companies build solar farms, transmission lines, heat pumps, steel plants, cement facilities, battery factories and charging networks. Banks decide whether to finance new liquefied natural gas terminals or grid upgrades. Insurers price climate risk. Automakers decide how quickly to shift production from internal combustion engines to electric vehicles.

There are real case studies. Denmark’s offshore wind industry shows how consistent policy can create a domestic industrial base. China’s solar manufacturing expansion shows how scale can drive down global technology costs. The United States’ clean-energy tax credits have spurred investment in batteries, hydrogen, carbon capture and manufacturing, though political durability remains a major question. South Africa’s Just Energy Transition Partnership shows both the promise and difficulty of financing coal transitions in emerging economies: billions were pledged, but implementation has been slowed by debt concerns, grid constraints, community needs and disagreements over loan terms.

Civil society brings a different kind of power. Indigenous groups, youth movements, labor unions, scientists, faith groups and environmental organizations have shaped the COP agenda for decades. The loss and damage fund did not appear by accident. It followed sustained pressure from vulnerable countries and civil society groups that argued climate disasters are not only humanitarian events but also matters of responsibility and justice.

At COP31, civil society will likely focus on fossil fuel phaseout language, climate finance quality, human rights, Indigenous land protection and greenwashing. One persistent concern is the presence of fossil fuel lobbyists at COP meetings. Climate advocates argue that companies expanding oil, gas and coal production should not have privileged access to negotiations intended to reduce fossil fuel dependence.

Businesses will also face scrutiny over transition plans. Net-zero pledges became common in the early 2020s, but many lacked near-term targets or relied heavily on offsets. By COP31, investors and regulators will be asking sharper questions: Are emissions falling across Scopes 1, 2 and 3? Is capital expenditure aligned with climate targets? Are companies retiring high-emitting assets or simply selling them? Are banks reducing financed emissions or shifting accounting methods?

The private sector can accelerate the transition. It can also slow it. COP31 will be one arena where that conflict becomes visible.

Challenges and Criticisms of the COP Process

The COP process requires consensus among nearly 200 parties, which means one resistant bloc can weaken language supported by most of the world. That design gives the UN climate system legitimacy, but it also makes it slow.

The most common criticism is that COP produces promises faster than implementation. Since the Paris Agreement was adopted in 2015, governments have announced net-zero targets covering much of the global economy. Yet emissions have not fallen at the required speed. Coal plants still operate for decades. Oil and gas companies continue approving new projects. Many countries still subsidize fossil fuels, either directly through budget support or indirectly through tax breaks and controlled prices.

Another criticism is finance. Developed countries pledged in 2009 to mobilize $100 billion per year in climate finance by 2020. That goal was reached late, damaging trust. The newer $300 billion per year by 2035 target is larger, but developing countries argue it remains far short of need and may rely too heavily on loans, private finance assumptions and repackaged development aid. For countries already carrying heavy debt, climate finance delivered as loans can deepen the problem it is meant to solve.

A third criticism is that COP language can be evasive. The COP28 agreement’s call to transition away from fossil fuels was historically significant because it named the core source of the problem. But critics noted that it did not require a full phaseout timeline and left room for continued fossil fuel production under broad interpretations of “transition fuels,” carbon capture and national circumstances.

Carbon capture is likely to remain contentious at COP31. The IPCC recognizes a role for carbon dioxide removal and, in some sectors, carbon capture technologies. But many scientists warn that these tools cannot substitute for rapid fossil fuel cuts. Capturing emissions from cement or steel may be necessary; using speculative future capture to justify new oil and gas expansion is far harder to defend.

The COP process also struggles with enforcement. The Paris Agreement is built around national pledges, transparency and peer pressure, not penalties. That was a deliberate design choice: binding top-down targets would not have secured broad participation. The upside is universal membership. The downside is that governments can miss targets without formal punishment.

Still, the criticism has limits. Without the UN climate process, there would be no common temperature goal, no global reporting system, no regular pressure cycle for NDCs, no shared finance negotiations, and no forum where vulnerable countries can confront major emitters directly. COP is flawed because global politics is flawed. The question is whether it can drive enough real-world change despite those constraints.

What to Expect: COP31 Predictions and Outcomes

By COP31, the world will likely have more renewable power, more electric vehicles and more climate policy than at any previous summit, while still producing and burning too much coal, oil and gas for a 1.5°C pathway.

The most likely outcome is a package that combines stronger language on implementation with continued tension over fossil fuels and finance. Expect negotiators to push for NDCs that are more detailed than earlier pledges. Countries may be asked to align their 2035 targets with the global stocktake, include economy-wide emissions coverage, and explain how targets match national laws and investment plans.

A strong COP31 outcome would include several elements. First, clearer accountability for 2035 NDCs, including transparent assumptions about land use, offsets and methane. Second, a finance delivery roadmap showing how the $300 billion per year by 2035 goal will be met and how the broader $1.3 trillion ambition can draw in public banks, private capital and debt relief. Third, serious adaptation metrics, so success is not measured only by dollars pledged but by people protected, crops secured, coastlines defended and health systems strengthened. Fourth, a credible signal that fossil fuel expansion must be aligned with declining global demand under Paris-compatible pathways.

A weaker outcome would be familiar: broad calls for ambition, limited new money, vague fossil fuel language and NDCs that depend on future technologies or conditional finance. That would leave the UNEP emissions gap largely intact and push more pressure onto COP32 and the next stocktake cycle.

The politics will be difficult. Energy security remains a live issue after years of price shocks and geopolitical conflict. Many governments fear voter backlash over fuel prices, electricity bills and industrial change. Developing countries will resist any deal that appears to impose constraints without finance. Fossil fuel exporters will defend their economic interests. Climate-vulnerable countries will argue that delay is already costing lives and territory.

Yet COP31 will also take place in a world where clean technology is no longer marginal. Solar and wind are often the cheapest sources of new electricity. Batteries are reshaping power grids and transport. Heat pumps are spreading in some markets. Electric vehicles are changing the auto industry. The economic case for clean energy is stronger than it was when the Paris Agreement was signed.

That creates the central test for COP31: can diplomacy catch up with the transition already underway and steer it toward fairness, speed and accountability?

The summit’s success should be judged less by the drama of the final plenary than by what follows: whether governments strengthen laws, whether finance arrives, whether emissions peak and fall, whether adaptation reaches vulnerable communities, and whether the next UNEP Emissions Gap Report shows the world moving away from 2.6°C to 2.8°C danger and closer to the Paris promise of 1.5°C.