Independent Third Party Verification

As part of the Airport Carbon Accreditation application process, each airport's carbon footprint, and, according to the accreditation level chosen, the airports carbon management and stakeholder plans, must be independently verified by a third party before consideration by the programme Administrator WSP. Such verification can only be undertaken by verifiers who meet certain threshold qualifications and who have successfully followed a programme webinar, and passed the associated online written examination. If successful, such verifiers are listed as approved verifiers for the purposes of the programme. A full list of approved verifiers is viewable here.

The requirements and the process of applying to become an approved verifier are as follows:

Requirement 1: Any person wishing to become an Airport Carbon Accreditation verifier should contact the Administrator WSP through the Help Desk at This e-mail address is being protected from spambots. You need JavaScript enabled to view it to determine whether they are eligible to apply and to set in train the application process. If so, they will be given a named contact to follow through on the process. No-one employed by the programme Administrator can act as verifier.

Requirement 2: They should then submit their CV in English demonstrating that they have experience of completing at least two verifications of carbon footprint inventories for organisations in line with ISO 14064-3 or similar within the previous two years. An applicant need not necessarily have comparable experience of carrying out verifications for airports, although this will be considered a plus. Verifications of previous Airport Carbon Accreditation applications will not be accepted as evidence as only Airport Carbon Accreditation approved verifiers are eligible to carry out such verifications. 

Requirement 3: If the CV meets requirements, the applicant verifier may then proceed to study the programme webinar provided by the Administrator and then undertake the two-part online examination. The webinar provides an overview of the programme; the roles of the verifier and Administrator; key requirements at each level of accreditation; key requirements for verification and verification outputs. It is provided as a downloadable recorded video, available for one week from it being provided, unless otherwise arranged with the Administrator. The examination comprises one set of questions covering general knowledge about the programme and a second set which goes into more detail about specific subjects. Additional information about the programme, such as the Airport Carbon Accreditation Guidance Document, Airport Carbon Accreditation Annual Report and the Verifier Guidance, will be provided by the Administrator.

Requirement 4: Prior to following the programme webinar and taking the examination, the prospective verifier will be billed an Administrative fee of €400 per person, invoiced and paid in advance of the webinar. In the event of an examination resit, a fee of €200 per person is paid, unless special circumstances apply as may be determined by the Administrator.

Requirement 5: The applicant will only be able to take the online examination once cleared payment has been received. The pass mark is 70% for each separate question set within the examination and failure in one part will require a resit of the entire examination as the questions in each part change each time. A maximum of two resits within a 6-month period will be allowed, unless agreed otherwise with the Administrator.

Requirement 6: Any approved verifier who has not carried out any verification under the programme within two calendar years following the award of their approved status, must re-take the webinar and associated examination to keep up to date with programme requirements if they wish to continue as an approved Airport Carbon Accreditation verifier. This will be subject to any applicable administrative fees at the time, unless waived by the Administrator. 

Requirement 7: Where significant changes are made to the programme Guidance Document, all verifiers may be required to review an updated webinar, and re-sit and pass a new exam, if they are to remain as approved verifiers. When this is required, verifiers will be given sufficient warning ahead of any deadline. A reduced administrative fee of €300 will be charged in these circumstances.