Technical Advisory Body (TAB)
2025 Assessment cycle
Re-assessment process
From 3 February to 21 March 2025, ICAO invited emissions unit programmes already eligible for the first phase to apply to 2025 re-assessment by the Technical Advisory Body (TAB), which will make recommendations on their eligibility to supply CORSIA-Eligible Emissions Units for the 2027-2029 compliance period (part of the CORSIA 'second phase').
ICAO received submissions from four programmes. The submission are included below (except for the information labelled as business confidential):
1. American Carbon Registry
2. Architecture for REDD+ Transactions
3. Gold Standard
4. Verified Carbon Standard
2. Architecture for REDD+ Transactions
3. Gold Standard
4. Verified Carbon Standard
Submission of Material Changes
TAB also received submissions as material changes from the following programmes:
3. Cercarbono
TAB Recommendations
TAB submitted its report to Council in October 2025. After consideration, Council accepted TAB's recommendations and approved the associated ICAO document "CORSIA Eligible Emissions Units". TAB recommendations in the TAB Report (August 2025) are available below.
Public Comments
From 30 March to 18 April 2025, ICAO invited the public to submit comments in responses in relation to the 2025 submissions by programmes listed above, regarding their alignment with the EUC.
Public comments received during that period, including commenter names and organizations, are published following the decision by the Council in respect of TAB's eligibility recommendations for this cycle.
ICAO reserves its rights to exclude from publication any submissions that are inconsistent with the guidelines, or which contain information that can be perceived as offensive, defamatory, and/or third-party advertising. ICAO will not consider any submission from the public that requests confidential treatment of all, or a substantial part, of the submission. All comments reflect the views and opinions of the writer and does not in any mean reflect TAB or ICAO views. All comments are published as received.
Summary Table
The summary table on CORSIA Eligible Emissions Units presents in a consolidated manner the list of programmes fully or conditionally approved by the ICAO Council to supply units to the Pilot Phase (2021-2023 compliance period), First Phase (2024-2026 compliance period) and Second Phase (2027-2029 compliance period). The table is for information purposes only and is available here.
Webinar for Emissions Unit Programmes Understanding CORSIA Eligible Emissions Units On February 11, 2025, ICAO organized a webinar to inform stakeholders about the 2025 re-assessment process, key documents for understanding the CORSIA Eligible Emissions Units, recent developments and next steps in the work of the Technical Advisory Body. |
2025 Re-application Form
In January 2025, TAB updated the forms listed below:
- 2025 Re-application form
- Re-application Form Appendix A- Supplementary Information
- Re-application Form Appendix B - Programme Assessment Scope
- Re-application Form Appendix C - Programme Exclusions Scope
- Re-application Form Appendix D - Registry Attestation
Material Change Form
Programmes which are approved to supply CORSIA Eligible Emissions Units are encouraged to use the Material Change Form to inform TAB of any material changes, the procedures for which are described in Section 8 of the TAB Procedures.
Clarification of TAB's criteria interpretation
The document "Clarification of TAB's criteria interpretation contained in TAB Reports" consolidates TAB’s further interpretations of the CORSIA Emissions Units Eligibility Criteria and associated Guidelines for Criteria Interpretation, including specific approaches taken to apply criteria and guidelines during the TAB’s assessments, which form the basis of TAB’s recommendations to the ICAO Council on eligible emissions units. The latest version of this document is available here.
Market Monitoring Form
The public is invited to submit comments pertaining to observations of any potential deviation from the Emissions Units Criteria (EUC), CORSIA Eligible Emissions Unit Programme's Scope of Eligibility (as specified in the ICAO document "CORSIA Eligible Emissions Units"), and/or Terms of Eligibility on an on-going basis using this Market monitoring form.
Previous TAB Assessments
TAB completed yearly assessments since 2020. Detailed information about those assessments can be accessed below: