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Technical Advisory Body (TAB)

2021 TAB Assessment


Call for Public Comments

By 15 April 2021, ICAO received four material updates to previously-assessed programmes:


The public is invited to submit comments on the material updates to previously-assessed programmes, in particular regarding the alignment of applicant organizations with the EUC. The public is requested to use this form to provide structured comments on these responses. Comments are not invited on responses submitted under previous assessment cycles.


The deadline for submitting comments is Saturday 29 May, 2021. Comments should be sent by email to officeenv@icao.int.


Public comments received during this assessment cycle, including the public comments that have already been received by 19 April 2021 deadline, for three responses to the call for applications (CERCARBONO, ProClima, REDD.Plus) between 11 January and 18 February 2021, and for two material updates to previously-assessed programmes submitted by 10 December 2020 (American Carbon Registry and Verified Carbon Standard), along with the commenter names and organizations, will be published on the ICAO CORSIA website following the decision by 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 these guidelines, or which contain information that can be perceived as offensive, defamatory, and/or third-party advertising (e.g. spam).


All comments received by the deadline are considered in full, but due to time constraints, ICAO is unable to provide individualized responses.


Call for Applications

ICAO invited emissions unit programmes to apply for assessment against the CORSIA Emissions Unit Criteria (EUC). To apply, emissions unit programmes completed the application forms below and submitted them to officeenv@icao.int by 18 February 2021. The next call for applications is foreseen to begin in January 2022.


Application Form

Application Form Appendix A - Supplementary Information

Application Form Appendix B - Programme Assessment Scope

Application Form Appendix C - Programme Exclusions Scope

Application Form Appendix D - Registry Attestation


2021 Webinar for Emissions Unit Programmes

Understanding CORSIA Eligible Emissions Units


On Tuesday 2 February 2021, ICAO held a webinar to inform stakeholders about the TAB assessment process, key documents for understanding CORSIA eligibility, recent developments and next steps in the work of the Technical Advisory Body (TAB).



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.


Previous TAB Assessments

TAB completed assessments in 2019 and 2020. Detailed information about those assessments can be accessed below:


2019 TAB Assessment

2020 TAB Assessment


Technical Advisory Body (TAB)

TAB Terms of Reference

TAB Procedures
List of TAB M​embers

TAB Work Programme and Timeline



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