Your EU customers may rely on emissions and installation information supplied by you. Accredited CBAM verification also operates at installation level. The question is whether the documentary record can connect the reported values to the correct installation, monitoring basis, production period, calculations, precursors and source records.
Regulatory content last reviewed 1 October 2026
CBAM verification applies at the level of the installation where CBAM goods are produced. Non-EU installation operators monitor and calculate embedded emissions and provide the relevant information to an accredited verifier. The verifier independently reviews the monitoring approach, emissions calculations and supporting evidence before issuing its verification report.
The Commission’s current guidance makes the documentary implications more concrete. Verification can involve the applicable monitoring plan, source data, data flows and controls, production and reporting periods, calculations, data gaps, corrections, installation information and relevant precursor data. The underlying documents therefore need to remain connected to the emissions information ultimately communicated to EU customers.
For a non-EU producer using actual emissions, the relevant information is not just a final emissions value. The documentary trail may need to connect the producing installation, applicable monitoring basis, production and reporting period, activity and production data, calculation inputs, supporting source records and relevant precursor information.
European Commission guidance is explanatory and does not replace the applicable legislation. Weetra provides independent documentary review upstream of accredited verification; it does not provide legal advice, accredited verification, certification or assurance.
Depending on the file, the review can examine installation identity, products, CN context, production route, reporting period, production quantity and monitoring plan. It can also check activity data, fuel and electricity records, emission factors, allocation, embedded-emissions calculations, precursors, verification-related material, versions and other supporting records.
Monitoring Plan referenced: v3.2
Monitoring Plan supplied: v3.1.
The file does not establish that the supplied version is the version underlying the reported emissions.
Production quantity used in the emissions calculation cannot currently be reconciled with the production record supplied.
Precursor emissions are reported but the available dossier does not establish the upstream installation, relevant period or source evidence supporting the value.
Possible conclusion: “The supplied documentary record does not yet establish the basis of the reported information sufficiently for reliance without further evidence or clarification.” This is a documentary finding, not a certification or verification conclusion.
Weetra can compare the calculated data supplied to customers with the source records made available for the same installation, product population and reporting period. The purpose is to expose documentary gaps, contradictions and broken relationships before those values are relied on further. Weetra does not issue a general compliance certificate or an accredited verification opinion.
€490 excl. VAT per dossier
Request an Evidence CheckWhen a deeper review is commissioned, Weetra records what was received, what was relied on, what conflicted, what was corrected, what changed and why the final conclusion was reached. That history makes the file easier for an adviser, verifier or authority to understand later.
Installation → monitoring plan → production data → activity data → emissions calculation → precursor information → supporting records → information communicated to the EU customer. A credible package keeps those relationships connected rather than treating the final emissions value as a standalone figure.
Typical problems include the wrong installation, inconsistent legal-entity and installation names, an outdated monitoring plan, calculations based on a version that was not supplied, quantities that do not reconcile, allocations that cannot be reproduced, missing fuel, electricity or material records, unsupported emission factors, precursor data from the wrong installation or period, undocumented corrections, or different versions sent to different EU customers.
A producer can use the €490 excl. VAT Evidence Check before sending or finalising the documentary package relied on by EU customers. The file does not need to be perfect before it is reviewed. The point is to identify visible weaknesses while there is still time to obtain, reconcile or clarify the underlying evidence.
There is no universal checklist. Depending on the installation and dossier, Weetra may examine operator and installation identity, goods and CN context, reporting period, production quantities, monitoring-plan version, activity data, calculation support, precursor relationships, documentary versions and source-record support.
Deeper review becomes more useful with several production routes, several precursors, complex allocation, a large set of documents, contradictory records, multiple reporting periods, multiple EU customers relying on the same dataset or substantial reconciliation work.
Monitoring Plan v2.4 may be supplied first and later replaced by v2.5. The calculation can change and a quantity reconciliation can be corrected. Preserving that sequence helps show which version was applicable, which version was ultimately relied on and what changed between them.
The producer is not only sending a figure. It is providing information on which an EU declarant may rely and which, when actual emissions are used, may ultimately sit behind accredited verification. A coherent evidence package reduces the risk that the customer receives a value without the documentary context needed to understand and support it.
Each Evidence Check finding identifies the documents concerned, what appears to be missing, inconsistent or insufficiently established, why the issue matters, the relevant document versions and the finding status. The Evidence Check does not include a remediation plan or detailed correction instructions.
Start with the evidence already available. Receive findings, correct or obtain evidence independently, stop if no deeper work is needed, or move to a deeper review only where the file justifies it. If no deeper review is required, no further engagement is recommended.
A deeper Weetra review can record what was received, what conflicted, what changed, what was corrected, what was ultimately relied on and why the conclusion was reached. That history can later support internal review, professional advice or subsequent accredited verification, while each receiving professional remains responsible for its own assessment.
Establish who operates the facility and which installation produced the relevant goods.
Connect production routes, quantities, precursors and reporting period to the population behind the calculation.
Keep the applicable monitoring basis, source records, versions, data relationships and calculation trail connected.
Transmit enough connected evidence for the customer and, where actual emissions are used, subsequent accredited verification to understand the basis of the reported information.
From September 2026, accredited CBAM verifiers can register in the CBAM Registry and first verification activities can begin, including documentary review and site visits. For non-EU producers, this makes installation-level documentary readiness a current operational issue rather than a future compliance exercise.
€490 excl. VAT per dossier
