OECD/IEA Climate Change Expert Group Papers

This series is designed to make available to a wider readership selected papers on climate change issues that have been prepared for the OECD/IEA Climate Change Expert Group (CCXG). The CCXG (formerly called the Annex I Expert Group) is a group of government delegates from OECD and other industrialised countries. The aim of the group is to promote dialogue and enhance understanding on technical issues in the international climate change negotiations. CCXG papers are developed in consultation with experts from a wide range of developed and developing countries, including those participating in CCXG Global Forums.

The full papers are generally available only in English.

The opinions expressed in these papers are the sole responsibility of the author(s) and do not necessarily reflect the views of the OECD, the IEA or their member countries, or the endorsement of any approach described therein.


Markets negotiations under the Paris Agreement

A technical analysis of two unresolved issues

This paper provides a technical analysis of two specific unresolved issues in the negotiations of rules for Article 6 of the Paris Agreement: (i) accounting methods for single- and multi-year NDCs under Article 6.2 and (ii) the implications of a potential transition of activities and units from the Kyoto Protocol mechanisms to the Article 6.4 mechanism. The paper first describes the accounting methods under consideration in Article 6.2 discussions and highlights that different methods can have different implications for environmental integrity, particularly if used by Parties with single-year NDCs. The paper then presents different options of transition of activities and units from the Clean Development Mechanism to the Article 6.4 mechanism. The analysis highlights that a potential full transition of activities could inhibit or delay new investments in mitigation activities, and that the supply of units could be several times larger than demand in 2020, leading to a significant carry-over.


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