Step 1 of 9
Pre-Engagement
Receive and review the Monitoring Plan.
Receive and review the Emissions Report.
Receive and review the Installation Information.
Receive and review all supporting documents.
Confirm that the verification engagement falls within ISSC's accredited scope.
Confirm that ISSC has the required competence, qualified personnel, resources, and availability to perform the verification.
Based on the pre-engagement review, ISSC will either accept or decline the verification engagement.
Step 2 of 9
Contract Agreement
A contract agreement shall be established between ISSC and the client before commencing the verification activities. The contract defines:
Scope of the verification engagement.
Verification timeline.
Responsibilities of ISSC and the client.
Commercial terms.
Confidentiality requirements.
The contract shall be signed by both ISSC and the client before the verification activities commence.
Step 3 of 9
Monitoring Plan Validation
For operators engaging with ISSC for the first time, the Monitoring Plan shall be validated in accordance with Point A.5 of Annex II to Commission Implementing Regulation (EU) 2025/2547.
The Monitoring Plan shall be re-validated by ISSC in the following cases:
Any nonconformities or recommendations for improvement identified in the previous verification report.
Any modifications to the installation or the Monitoring Plan during the reporting period.
Acceptance of the Monitoring Plan Validation is mandatory before commencing the verification activities.
Step 4 of 9
Strategic and Risk Analysis
Review the verification activities.
Collect and review all relevant information related to the installation and the reported emissions.
Perform a strategic analysis to understand the installation, its processes, and the emission sources.
Assess the inherent risk, control risk, and detection risk associated with the verification activities.
Step 5 of 9
Verification Plan
The ISSC verification team shall develop a Verification Plan that describes:
The test plan, including the methods for testing the effectiveness of control activities.
The data sampling plan, including the data sampling methods and sample selection.
The verification activities to be performed, including their objectives, timing, and estimated time frame.
Step 6 of 9
Physical Site Visit
Following the verification planning, the ISSC verification team will coordinate with the operator to schedule a site visit for conducting the verification activities.
During the site visit, the ISSC verification team may perform the following activities:
Review the implementation of the Monitoring Plan.
Verify activity data and supporting records.
Assess the application of the monitoring methodology.
Perform data sampling and sample testing.
Conduct analytical procedures.
Interview relevant personnel.
Review the operation of control activities.
Perform any additional verification procedures necessary to obtain sufficient and appropriate verification evidence.
In accordance with Regulation (EU) 2025/2546 and Regulation (EU) 2023/956 (CBAM), a physical site visit is generally required as part of the verification process. A physical site visit is mandatory during the first verification year. In subsequent verification years, a virtual site visit or a waiver of the site visit may be applied where permitted by the applicable regulations and where the reliability of the verification is not compromised. Physical site visits shall be conducted at least once every two years.
Step 7 of 9
Findings and Corrective Actions
If the ISSC verification team identifies any misstatements, nonconformities, or non-compliance with Implementing Regulation (EU) 2025/2547 or Implementing Regulation (EU) 2025/2620 during the verification activities, the operator will be informed and requested to implement the necessary corrective actions.
The operator shall submit the corrected information and supporting evidence for review before the verification report is issued.
If the identified findings are not corrected before the verification report is issued, the ISSC verification team shall assess their impact on the reported data and determine whether they result in a material misstatement in accordance with the applicable regulations.
Failure to address findings that result in a material misstatement, or that prevent ISSC from obtaining reasonable assurance, may lead to the issuance of an Unsatisfactory Verification Opinion in accordance with Delegated Regulation (EU) 2025/2551.
Step 8 of 9
Independent Review
Before issuing the Verification Report, ISSC shall assign an independent reviewer who has not participated in the verification activities.
The independent reviewer shall review the verification documentation, verification evidence, and the draft Verification Report to confirm that:
The verification has been performed in accordance with the applicable requirements.
Sufficient and appropriate verification evidence has been obtained.
The verification conclusions are supported by the evidence.
The Verification Report is suitable for issuing a Reasonable Assurance Opinion.
Only after the independent review has been successfully completed shall the Verification Report be issued.
Step 9 of 9
Issue Verification Report
Upon completion of the verification process and the independent review, ISSC shall issue a Verification Report with either a Satisfactory or Unsatisfactory Verification Opinion.
Where the operator is registered in the CBAM Registry in accordance with Regulation (EU) 2023/956, the Verification Report shall be submitted through the CBAM Registry.
Where the operator is not registered in the CBAM Registry, ISSC shall provide the Verification Report to the operator in its original electronic format and a copy in a standard electronic document format for information purposes.