How global climate talks work: the COP process explained

When countries announce a deal at a climate summit, what have they actually agreed to do? The answer depends on whether you are reading an adopted decision, a national commitment or a proposal still under negotiation. Knowing the difference makes climate talks easier to follow and helps you judge what an announcement means.

What COP is there to do

The talks rest on the United Nations Framework Convention on Climate Change, or UNFCCC, a treaty adopted in 1992. Its objective is to stabilise greenhouse-gas concentrations at a level that prevents dangerous human interference with the climate system. COP stands for Conference of the Parties. It is the Convention's supreme body. It reviews how the treaty is being put into practice and takes decisions to advance that work.

COP names both an institution and the meetings commonly called climate summits. Under the Convention, ordinary sessions take place every year unless the COP decides otherwise. The secretariat arranges and supports meetings, while subsidiary bodies provide scientific and technological advice and help review implementation. The process involves much more than leaders' speeches.

Qualified governmental and non-governmental bodies can seek admission as observers under the participation rules. Observers and Parties to the treaty have different roles in decision-making.

How a proposal becomes a decision

The basic route starts with an agenda item before the governing body. Detailed bargaining takes place in contact groups or informal consultations. Draft outcomes then return to the relevant plenary, the full meeting, for consideration and adoption. A draft can show where negotiations are heading; adoption makes it an agreed decision.

Decisions are generally reached by consensus. The UNFCCC's guide for presiding officers describes this as general agreement without a formal vote or formal objection. Delegations can accept consensus without endorsing every word. That is why the final wording matters: it must be a text that can command consensus.

The draft voting rule remains unapplied, but there are specific exceptions to consensus. For Convention amendments, for example, the treaty permits a three-fourths majority of Parties present and voting as a last resort when efforts to reach consensus fail.

Where the Paris Agreement fits

The Paris Agreement was adopted at COP21 on 12 December 2015. National ratification is a separate step from adoption. Paris also has its own governing meeting, known as the CMA: the COP serving as the meeting of the Parties to the Paris Agreement. Only Paris Parties take decisions under that agreement.

Paris aims to hold the rise in global average temperature well below 2°C above pre-industrial levels, while pursuing efforts to limit it to 1.5°C. These goals apply globally; they do not assign identical emissions quotas to every country.

The agreement recognises equity and differences in responsibility, capability and national circumstances. It requires developed-country Parties to provide financial resources to help developing-country Parties with mitigation and adaptation. Mitigation means efforts to reduce emissions. Adaptation means building resilience and reducing vulnerability to climate change. Paris separately recognises the importance of averting, minimising and addressing loss and damage from climate impacts. Climate negotiations cover all these concerns alongside emissions cuts.

National pledges within shared rules

An NDC is a nationally determined contribution. Under Paris, each Party must prepare, communicate and maintain successive NDCs that it intends to achieve. It must also pursue domestic mitigation measures aimed at their objectives. The country determines its contribution within this shared treaty framework.

Countries have duties under the agreement, so calling it wholly voluntary is misleading. The duty to submit a contribution and pursue measures does not guarantee that every target will be achieved. Read the precise obligation.

Parties must communicate an NDC every five years. Each successive contribution is to go beyond the previous one and reflect the country's highest possible ambition. It must take account of the country's responsibilities, capabilities and circumstances. Countries can also strengthen an existing NDC between cycles. COP meets annually, while countries follow the five-year NDC cycle.

How progress is examined

Paris requires regular reports of greenhouse-gas inventories and the information needed to track progress towards NDCs. Technical experts review relevant information, with flexibility for developing countries that need it because of their capacities. These reports provide evidence of progress towards an announced target.

The global stocktake examines collective progress towards the agreement's purpose and long-term goals. Paris scheduled the first for 2023 and subsequent stocktakes every five years unless otherwise decided. The results guide countries as they update and strengthen their actions and support. The stocktake does not allocate compulsory national emissions quotas.

The agreement also establishes an implementation and compliance mechanism. Its committee helps countries implement and comply with the agreement, without punishment or automatic fines for missing an NDC target. The system relies on reporting, review and the cycle of stronger contributions.

Reading India's 2030 commitments

India's August 2022 updated NDC commits to reducing the emissions intensity of GDP by 45% by 2030 from the 2005 level. Intensity measures emissions relative to economic output. The 45% reduction applies to that ratio, rather than total emissions.

The same document targets about 50% of cumulative installed electric-power capacity from non-fossil fuel-based resources by 2030, with technology transfer and low-cost international finance, including from the Green Climate Fund. Read this as a target for installed capacity, rather than electricity actually generated or total energy consumed. Non-fossil resources also form a different category from renewables alone.

A further commitment is an additional carbon sink of 2.5 to 3 billion tonnes of CO2 equivalent through additional forest and tree cover by 2030. The target measures carbon absorption and storage, rather than the number of trees.

The next period and the longer view

India's April 2026 NDC covers 2031 to 2035. It sets a 47% reduction in GDP emissions intensity by 2035 from 2005 levels, and about 60% of cumulative installed electric-power capacity from non-fossil resources by 2035, with technology transfer and low-cost international finance.

Its carbon-sink target is 3.5 to 4.0 billion tonnes of CO2 equivalent through forest and tree cover by 2035, compared with the 2005 baseline. Read this against its baseline, rather than as an annual removal rate or an addition to the 2030 target. The document also covers adaptation and sustainable lifestyles. It states that effective implementation depends on additional developed-country support. India's stated longer-term goal remains net-zero by 2070.

Read reported achievements separately from commitments. A PIB parliamentary-answer release dated 13 August 2026 reports that non-fossil resources crossed 50% of installed electric-power capacity in June 2025. This reports progress on one capacity target, rather than completion of the entire NDC.

What to look for in the next headline

Ask whether the text is a proposal or an adopted decision, which countries it concerns, and what its numbers measure. For an Indian target, check the baseline, deadline and support conditions. Then look for evidence that the commitment is being put into practice. These questions help you judge what a summit announcement means.

For practice with international negotiation, One Young India's Model G20 Summit simulates the G20 Leaders' Summit and negotiations on global economic cooperation. It is a G20 simulation, a different forum from the UNFCCC climate talks.