Article 6 (Paris Agreement)

Article 6 is a pivotal component of the Paris Agreement's rulebook, designed to operationalize international cooperation in the fight against climate change. Its primary purpose is to help countries, known as "Parties," meet their Nationally Determined Contributions (NDCs) more efficiently and cost-effectively. By creating pathways for countries with lower abatement costs to sell emission reductions to countries with higher costs, Article 6 aims to unlock climate finance and encourage more ambitious climate goals worldwide.

The framework is structured around three distinct mechanisms:

• Article 6.2 – Cooperative Approaches: This provides a basis for bilateral or multilateral agreements between countries to trade "Internationally Transferred Mitigation Outcomes" (ITMOs). Essentially, one country can fund an emission-reducing project in another country and count the resulting mitigation outcome towards its own NDC. The system requires robust accounting and "corresponding adjustments" to prevent the critical issue of "double counting," where a single emission reduction is claimed by more than one party.
• Article 6.4 – The Mechanism: This establishes a new centralized global carbon market, supervised by a UN body, to trade carbon credits generated from specific emission-reduction activities. Seen as the successor to the Kyoto Protocol's Clean Development Mechanism (CDM), this mechanism creates credits (known as A6.4ERs) that can be bought by countries, corporations, or even individuals to help meet their climate commitments or compliance obligations. A share of the proceeds is allocated to help developing countries adapt to the effects of climate change.
• Article 6.8 – Non-Market Approaches: This pillar focuses on formal cooperation between countries that does not involve trading. It promotes collaboration on climate action through finance, technology transfer, and capacity-building, helping to advance mitigation and adaptation efforts in a more integrated manner.

Concrete Example

Imagine a developed country like Switzerland has a very ambitious NDC but finds it technologically complex and expensive to reduce emissions further within its own borders. At the same time, a developing country like Ghana has significant potential to build a large-scale solar power plant, which would reduce its reliance on fossil fuels but lacks the required capital.

Under Article 6.2, Switzerland could finance the construction of the solar plant in Ghana. The resulting certified emission reductions (the ITMOs) would be transferred to Switzerland, helping it meet its NDC. Ghana benefits from foreign investment, job creation, and a transition to clean energy, contributing to sustainable development. This cooperation makes global climate action more affordable and accelerates the flow of climate finance where it's needed most.

For more information on the different types of carbon markets, see our guide on compliance vs. voluntary carbon markets. For official documentation, refer to the UNFCCC's explanation of Article 6.