CDM Registry

Institutional background

The Conference of the Parties serving as the meeting of the Parties to the Kyoto Protocol on its first session, held at Montreal from 28 November to 10 December 2005, established that the CDM Executive Board shall develop and maintain the CDM registry according to the requirements set out in Appendix D to the report (FCCC/KP/CMP/2005/8/Add.1).

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Online platform for voluntary cancellation of CERs:

The online platform was launched in September 2015 to allow members of the public to offset their carbon footprint in a simple and transparent way.

The platform is a web based application that allows project participants to offer the voluntary cancellation of their CERs held in the CDM registry at a price they determine. Members of the public can filter available CERs by project type, country or other criteria to ensure their action supports GHG mitigation activities which are in line with organizational goals or personal preferences. Paid CERs are cancelled in the CDM registry through a paperless process. For each purchase of CER cancellation, the CDM registry administrator issues an attestation of cancellation.

Approximately 13.2 million CERs have been cancelled on the platform until August 2024 by organizations and individuals that want to neutralize their carbon footprint.

The secretariat has prepared a brochure for interested project participants. The brochure explains the benefits of the platform, how it works, eligibility of projects and how to open an account.  

The platform is available at the following link: https://offset.climateneutralnow.org/

The page listing the details of  voluntary cancellations in the CDM Registry through the online platform can be found in the following link: https://offset.climateneutralnow.org/vchistory

Permanent holding account representatives or project participants  who hold CERs in the pending account and are  interested in offering CERs for voluntary cancellation on the platform,  can contact us at:  goclimateneutralnow@unfccc.int



CDM Registry News - Operational

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  • 17 December 2024 - year end forwarding / voluntary cancellation requests

The CDM Registry will be closed from 25 - 27 December 2024.  Focal point representatives should submit all forwarding or voluntary cancellation requests by Friday, 20 December 2024.

Several project participants have brought to the attention of the secretariat that some DNAs are non-responsive. To guarantee smooth operation of the CDM, it is crucial that DNAs are contactable and responsive.

After the secretariat brough this matter to the Executive Board which then referred the matter to the Conference of the Parties, the Executive Board has decided at its last meeting in March 2024 to bring this matter to the attention of the UNFCCC National Focal points.

At its last meeting in March 2024 the Executive Board has decided the following: “The Executive Boardrequested the secretariat to initiate written communication with the UNFCCC National Focal Points of the Parties to the Kyoto Protocol of non-responsive DNAs as identified by project participants in order to confirm whether the DNA is no longer operational.

Furthermore, the Board requested the secretariat to reach out to the Heads of delegations of the  Parties to the Kyoto Protocol that have not responded to the above communication prior to the next meeting and report back to the Board”.

More information can be found at the meeting report of the EB in the following link ( Agenda item 2.2 Strategic planning and direction, paragraphs 9 and 10) CDM EB: 121st meeting report

CDM Registry News - Regulatory

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  • 29 June 2023 - Questions and answers on emissions trading under the Kyoto Protocol in relation to the end of the second commitment period

    • The additional period for fulfilling commitments (true-up period) of the second commitment period (CP2; 2013-2020)  of the Kyoto Protocol started on 1 June 2023 and will end on 9 September 2023 at 23:59:59. The Conference of the Parties (COP) serving as the meeting of the Parties to the Kyoto Protocol will consider, at its 18th session (CMP18), the functioning and operation of the processes and institutions of the clean development mechanism in the future.
    • For more information, kindly refer to the dedicated website for the True Up Period here which contains an FAQ document that is being updated on a regular basis.

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The CDM registry is pleased to announce that, as a result of the successful connection of EU registries and CITL to the ITL, our live operations with EU registries have officially started on Wednesday 22 October. As from that date the CDM registry has been able to forward CERs held in temporary holding accounts to their associated EU registries for all cases where the national registry ID was made available by account representatives and where the receiving national registry confirmed their readiness to receive them.

Entities responsible for instructing on forwarding of CERs from the Pending account of the CDM registry to acquiring holding accounts of project participants authorised by an EU country, as stated in the modalities of communication, are encouraged to check whether the corresponding EU national registry is available to receive CERs from the CDM registry and to ensure that the receiving account corresponds to an account within that national registry.

Account representatives of temporary holding accounts that are still expecting to receive CERs in the corresponding national registry are requested to ensure that the national registry account ID has been instructed through the CDM registry online interface (user name and password needed).

The UN Climate Change secretariat announced on Tuesday 14 October 2008 that it is on schedule to complete the live connection of the UNFCCC International Transaction Log (ITL) with the European Union (EU) Community Independent Transaction Log (CITL) and 26 European Union greenhouse gas emissions trading system (EU ETS) registries. As a result of this, the CDM registry and other Non-EU registries have been switched back to "Operating" mode as from today Thursday 16 October. The CDM registry is therefore now fully operational and able to resume forwarding of CERs as usual.

Please note, however, that the forwarding of CERs from Temporary Holding Accounts (THAs) to the associated EU registries will not take place until all the preparatory work has been completed in coordination with the receiving registries. The exact date when all these CERs will be sent to EU registries will be advised on this page in the next few days.

The European Commission (EC), Member States and the secretariat of the United Nations Framework Convention on Climate Change (UNFCCC) are currently working on the last preparatory phases of setting up a live connection between the CITL, the UNFCCC International Transaction Log (ITL) and Member State registries. The final connection process between the ITL and CITL will start on 6 October at 8:00 am CEST and is expected to take at least 10 calendar days (see here).

Please note that, as a result of this process, the CDM registry will not be available for forwarding transactions during that time starting on October 7 2008. Although issuance of CERs will still be conducted as usual, ensuing forwarding requests will not be processed until the connection process is finalised.

Once this connection process has been successfully completed, the CDM registry intends to forward all CER units currently held in temporary holding accounts to the national registries they are associated with. All CERs contained in a temporary holding account will be forwarded to the receiving account in the national registry in a single transaction. Specific instructions in this regard are being provided to account representatives via email.

For further information about the announcement mentioned above, please refer to the following links: