Carbon Border Adjustment Mechanism (CBAM) compliance involves EU importers, industrial producers and accredited verifiers with distinct responsibilities. Emissions information must move between several independent organisations as part of a cross-border process. For manufacturers in the Western Balkans, calculating embedded emissions is only one element of the overall workflow.
The emissions information also needs independent verification, transfer to the relevant EU importer and inclusion in the importer’s regulatory reporting. The division of responsibilities becomes more complex when production data come from multiple companies, including electricity suppliers, raw-material producers and industrial processors. Even where these organisations contribute to the emissions evidence chain, none controls every stage of the final declaration.
When contractual obligations are unclear, documentation can be missing, verification can be delayed and disputes can arise over who must correct reported information. A defined governance framework helps each participant identify obligations before reporting deadlines. This is particularly relevant when evidence depends on operational data held across different parts of an industrial supply chain.
EU importers manage CBAM declarations and certificate obligations
The EU importer, or the relevant indirect customs representative, is responsible for meeting CBAM declaration obligations. This includes managing authorisation requirements, registry procedures and CBAM certificate obligations. Importers also need to ensure that the emissions information used in regulatory submissions corresponds to the imported goods.
Importers are expected to determine which producing installation supplied the products. They also need to confirm whether associated emissions information remains current and whether actual emissions values have undergone required independent verification. Although exporters provide underlying industrial information, submitting an emissions spreadsheet does not shift the importer’s regulatory responsibilities to the manufacturer.
The importer must maintain a reliable link between goods entering the EU and the corresponding emissions documentation. Changes in supplier information, production methods or verified emissions factors therefore need to be communicated through agreed procedures. These steps support consistency between what is imported and what is declared under CBAM.
Non-EU operators hold operational data for embedded emissions calculations
The non-EU producing installation holds operational information needed to calculate embedded emissions for manufactured goods. Records can include production routes, fuel consumption, electricity use, material inputs, manufacturing output and relevant operating conditions. The industrial operator must set up monitoring arrangements able to generate emissions calculations under the applicable CBAM methodology.
Where actual values are used, supporting information must be available for independent verification. Manufacturers are expected to preserve underlying evidence and keep production records consistent with emissions information supplied to customers. For Western Balkan exporters, this requires coordination across production, engineering, procurement and reporting departments.
The factory needs to explain how reported emissions are derived from its operating data. It also has to demonstrate that the calculation applies to the relevant products exported into the EU market. This operational evidence forms part of what later supports verification and regulatory reporting.
Accredited verifiers provide independent assurance separate from other roles
The accredited CBAM verifier operates separately from both the industrial operator and the importing company. The verifier reviews the operator’s monitoring methodology, emissions calculations and supporting documentation before issuing an independent verification conclusion. The effectiveness of this process depends on maintaining impartiality throughout the assessment.
Industrial manufacturers may appoint engineering consultants or technical advisers for metering arrangements, monitoring procedures and reporting system preparation. However, an independent verifier should not be placed in a position of assessing work for which it was responsible during design or implementation stages. This separation distinguishes technical preparation from formal regulatory verification.
An engineering adviser can improve evidence quality and organisation at the factory level. The accredited verifier then provides the independent assessment required for actual emissions reporting under CBAM processes.
Upstream suppliers add evidence layers through electricity and materials records
CBAM-related responsibilities can extend beyond the manufacturer exporting finished products into the EU. Electricity generators, utilities, material traders, steel mills and aluminium smelters may hold information needed to determine emissions associated with manufacturing inputs. When exporters rely on these records, procurement agreements should define data-access rights and delivery obligations.
If upstream emissions information is requested only after a reporting period ends, suppliers may not retain sufficient detail for CBAM purposes. This risk is particularly relevant in multi-tier supply chains where multiple transactions occur before final processing. Maintaining traceability supports movement of information through tiers without losing its connection to original production activities.
For example, a Western Balkan steel fabricator may buy material through a trader, perform additional processing and export a CBAM-covered product to an EU customer. In that case, the fabricator needs sufficient information about precursor emissions to prepare its calculations. The importer then requires the final verified emissions result associated with imported goods.
Contracts define data access, ownership and correction handling
Commercial agreements can define how emissions information moves between upstream suppliers, industrial operators, verifiers and EU importers. Provisions can cover data ownership, submission deadlines, confidentiality requirements, correction procedures and authorised disclosure arrangements. Manufacturers should know which records they must provide to importers and which supporting information they can obtain from electricity and material suppliers under contract terms.
Contracts can also specify whether sensitive production information may be disclosed directly to an accredited verifier rather than shared broadly among commercial counterparties. Data corrections require particular attention if meter adjustments change previously issued operator emissions reports. In such cases, manufacturers need controlled procedures for updating calculations and reissuing relevant information.
If an EU importer has already used an earlier result, parties must determine how revised data will be communicated within applicable reporting processes. A reliable evidence chain therefore needs to preserve not only updated emission values but also records of changes affecting previously distributed information.
RACI matrices support escalation when documentation or methods are disputed
Industrial companies can use a Responsible, Accountable, Consulted and Informed (RACI) matrix to divide reporting responsibilities across participants. The matrix should identify who prepares, reviews, approves and receives individual evidence items rather than assigning responsibilities only by job title categories. It can also establish escalation procedures when documentation is missing or technical disagreements remain unresolved.
If an upstream supplier misses an emissions-data deadline, procurement escalation can be initiated before the reporting period closes. When an accredited verifier identifies a technical deficiency, engineering departments can coordinate responses internally or with relevant parties. If an importer challenges methodology used in an emissions calculation, commercial and legal departments can participate in resolving the issue.
These arrangements aim to reduce situations where unresolved questions accumulate with one sustainability manager immediately before a regulatory deadline. They also support structured handling of issues that arise across different organisations involved in CBAM compliance workflows.
Preliminary internal estimates must remain distinct from verified results
A governance requirement concerns when internal emissions information becomes an external declaration or commercial claim. Manufacturers may calculate preliminary emissions values during a reporting year for operational management purposes and discrepancy identification. Internal estimates and provisional calculations should remain distinguishable from final actual emissions values that have undergone agreed review and verification procedures.
A controlled information-release process can define who authorises distribution of emissions results to customers. It can also specify which supporting documentation must accompany those results when shared externally. This helps prevent preliminary figures being treated as verified regulatory evidence by exporters or importers.
Internal management dashboards can reinforce separation by tracking metering records, material information, outstanding supplier requests, verification findings and customer submissions as separate categories. An unresolved supplier request should not appear as completed verified evidence under internal tracking systems.
Shared verified datasets can reduce duplication across multiple EU customers
Manufacturers supplying several EU customers can reduce reporting duplication by maintaining a standardised core dataset of verified installation-level emissions information. Underlying records can remain consistent while customer-specific documentation formats or commercial information are provided according to individual importers’ requirements. This approach limits recreating the same emissions calculation separately for each buyer.
The use of standardised supplier evidence does not transfer regulatory responsibilities between participants under CBAM rules. Each EU importer continues managing its own CBAM declaration while the industrial operator remains responsible for accuracy, traceability and maintenance of source information used for calculations.
A centralised evidence repository supported by defined approval and release procedures allows exporters to provide consistent emissions documentation across multiple commercial relationships. At the same time it preserves separate legal and technical responsibilities within the CBAM reporting chain between operators, verifiers and EU importers.