COP30 Belém 2025 — Climate Summit, Fossil Fuel Phase-Down & Fuel Price Implications

Preview published 1 October 2025 · Updated 15 October 2026

Overview

COP30 is the 30th session of the Conference of the Parties to the UN Framework Convention on Climate Change (UNFCCC). Its location in Belém — gateway to the Brazilian Amazon — sends a deliberate signal: the host country is placing forests, biodiversity, and the relationship between climate change and the Global South at the centre of proceedings. Brazil under President Lula has positioned itself as a climate leader, pledging to achieve climate-neutral land use by 2030.

COP30 arrives five years after the Paris Agreement's 2020 entry-into-force and is the first full stocktake COP since the COP28 "fossil fuels" language breakthrough. The central question: have countries' 2025-round NDCs genuinely ratcheted ambition to keep 1.5°C within reach?

The NDC ratchet: are countries doing enough?

Under the Paris Agreement, countries must submit enhanced Nationally Determined Contributions (NDCs) every five years. The 2025 round — due by February 2025 ahead of COP30 — is the third NDC cycle. The UNFCCC's synthesis report on the 2025 NDCs will be published before COP30 and is expected to show the world is still not on track for 1.5°C, though the gap has narrowed from earlier assessments.

Key NDC dynamics for COP30:

• Major emitters: China, India, and the US have submitted or are expected to submit updated NDCs. The ambition level of these three determines a large fraction of the global emissions trajectory.
• Oil-producing states: Saudi Arabia, UAE, Russia, and other major producers have submitted NDCs that largely separate domestic emissions reduction from crude oil production levels — a tension COP30 will probe.
• Developing countries: Many SIDS (Small Island Developing States) and African nations have submitted maximally ambitious NDCs but argue they cannot implement them without climate finance.

Fossil fuel phase-down: from COP28 language to action

COP28 in Dubai produced the first ever UNFCCC agreement explicitly mentioning "transitioning away from fossil fuels" — a significant step beyond the "phase-down of coal" language at COP26. But "transitioning away" falls short of the "phase-out" language pushed by the EU, small island states, and climate advocates. COP30 will test whether this language translates into concrete NDC commitments and policy mechanisms.

The implications for global fuel markets are long-term but real:

• Countries that commit to fossil fuel phase-down timelines will constrain domestic production investment, tightening long-run supply
• If demand falls faster than supply (driven by EV adoption and energy efficiency), prices fall; if supply falls faster than demand, prices rise
• The distribution of transition costs matters for fuel price equity — see our analysis of fuel subsidies and the subsidy reform guide

Fossil fuel subsidy reform at COP30

The IEA estimates that global fossil fuel subsidies reached over $1 trillion in 2022 (including implicit subsidies from failure to price externalities). Explicit consumer subsidies — the kind that suppress pump prices — remain particularly high in the Middle East, Southeast Asia, and parts of Africa. COP30 is expected to include a dedicated track on "inefficient fossil fuel subsidy reform" as part of the Just Transition work programme.

Countries that have recently reformed subsidies — like Nigeria (2023 petrol subsidy removal), Indonesia (ongoing Pertalite reform), and Malaysia (2024 targeted subsidy transition) — serve as case studies for the political and social conditions needed for reform. See our detailed regional coverage:

• Middle East fuel subsidy reforms
• Southeast Asia fuel subsidy reforms
• Africa fuel price outlook

Article 6 carbon markets

COP30 is expected to finalise outstanding technical rules under Article 6 of the Paris Agreement, which governs international carbon markets. The Art. 6.4 mechanism (the Paris Agreement Crediting Mechanism, effectively a reformed CDM) is particularly important: it will determine whether internationally traded carbon credits can be used by airlines under CORSIA (Carbon Offsetting and Reduction Scheme for International Aviation) and by other heavy industry sectors.

Well-functioning carbon markets could accelerate investment in sustainable fuels (including SAF for aviation) by creating a price signal for lower-carbon alternatives. Dysfunctional markets risk creating paper offsets with no real emission reduction.

Climate finance: the $300 billion question

COP29 in Baku established a New Collective Quantified Goal (NCQG) on climate finance of $300 billion per year from developed to developing countries by 2035, with a broader mobilisation goal of $1.3 trillion. COP30 will be the first assessment of whether donor countries are meeting early commitments toward this goal and will negotiate the governance of Just Energy Transition Partnerships (JETPs) for countries transitioning away from coal and subsidised fossil fuels.

What COP30 means for fuel prices

COP climate agreements do not directly set pump prices. But their influence is indirect and long-term:

• Carbon pricing expansion: Countries that implement or expand carbon pricing on road fuels (as Germany did with the nEHS) will see pump prices rise, particularly for those without compensating rebates
• Subsidy reform commitments: Countries that commit to removing fuel subsidies at COP30 will see near-term pump price rises in previously subsidised markets
• Investment signals: Strong COP30 outcomes that accelerate clean energy investment can reduce long-term fossil fuel demand, eventually softening crude oil prices
• Transition asymmetry: If oil supply investment declines faster than demand falls (due to high fossil fuel capex risk), crude prices could be structurally higher in the 2030s

For current price comparisons across 100+ countries — reflecting existing tax, subsidy, and carbon pricing levels — use the fuel price explorer.