Engineering and environmental consultancy Clarion.Engineer has developed a methodology designed to connect the fragmented data chain behind the European Union’s Carbon Border Adjustment Mechanism, linking manufacturers, exporters, importers, energy suppliers, precursor producers and emissions verifiers.
- Production data forms the basis of CBAM reporting
- Precursor emissions extend the data chain
- Electricity evidence requires separate controls
- Pre-verification separates preparation from statutory assurance
- Responsibility and independence are defined separately
- MRV systems can be implemented in stages
- Factory records remain critical to the framework
The framework is intended to address a practical problem facing EU importers: information required for CBAM declarations can originate across multiple companies, production stages and jurisdictions before reaching the customs declaration.
Rather than treating emissions reporting as an annual calculation, Clarion’s approach establishes a continuous factory-level Monitoring, Reporting and Verification (MRV) process. It defines activities, responsibilities, controls and evidence requirements from raw-material procurement through to the delivery of verified embedded-emissions information to the European customer.
CBAM entered its definitive phase in January 2026, increasing the importance of the quality and traceability of emissions information associated with imported goods. For non-EU manufacturers, the issue also affects commercial relationships, as European customers increasingly require consistent and verifiable emissions data when negotiating volumes, prices and longer-term supply arrangements.
Production data forms the basis of CBAM reporting
Clarion’s methodology begins with product classification and production-boundary definitions, followed by identification of emission sources, production routes, precursor materials and electricity consumption. Responsibility for the information is distributed among the relevant factory functions, with production, procurement, finance, environmental management, laboratories, energy teams and IT departments contributing to a controlled reporting system.
Under the framework, operational information is periodically reconciled against procurement records, energy invoices, inventories, production accounts, sales documentation and export volumes. Differences are investigated during the reporting period rather than being reconstructed after the end of the year.
Clarion said the principal difficulty is the evidence supporting the final emissions calculation, including production records, energy consumption, precursor emissions, allocation methodologies, meter readings, laboratory results and the link between factory output and goods ultimately shipped to the EU. The methodology represents a shift for companies where carbon reporting has traditionally been assigned to a single environmental manager or an external consultant.
Precursor emissions extend the data chain
A specific part of the framework addresses precursors, or materials used to manufacture another CBAM-covered product whose embedded emissions may need to be incorporated into the final product’s emissions calculation. Manufacturers purchasing steel, aluminium, fertiliser inputs or other relevant materials can therefore depend on information generated at another installation, potentially in another country and according to a different reporting system. Clarion’s procedure requires factories to record precursor suppliers, production locations, quantities, production routes, reporting periods and the verification status of supplied information.
The system uses supplier questionnaires, supporting-document requirements, risk classifications and escalation procedures to distinguish substantiated information from estimates or unsupported declarations. Where supplier information is incomplete, the framework records the limitation and determines whether actual data can be used or whether an applicable default approach is required. Change controls are also incorporated for new suppliers, modified production routes and changes in the origin or specification of precursor materials.
Electricity evidence requires separate controls
Electricity consumption presents another area where commercial claims and CBAM evidence can diverge. Industrial customers may receive renewable-energy declarations, contractual certificates or environmental claims from electricity suppliers. Such documentation does not automatically establish the emissions value that can be used under CBAM calculation rules.
Clarion’s methodology consequently separates commercial energy claims from CBAM-relevant evidence. Electricity consumption must be reconciled against meter readings and invoices, while generation-source information, emissions factors and contractual arrangements undergo defined eligibility and traceability checks. The framework is designed to establish a documented connection between electricity consumption and the information used in the embedded-emissions calculation.
Pre-verification separates preparation from statutory assurance
Clarion’s model introduces a role it calls the “Pre-Verifier”, referring to a readiness and internal-assurance specialist rather than a statutory verifier. A Pre-Verifier working with a factory can review the monitoring plan, test calculations, examine precursor information, assess internal controls, conduct sample checks and identify deficiencies before formal verification starts. The purpose is to reduce late-stage corrections and assemble a structured evidence package for the accredited verifier.
Clarion distinguishes this preparation work from formal verification. Pre-Verification is not a CBAM certificate, accreditation or formal verification opinion. Where applicable rules require actual embedded-emissions data to undergo verification, the final determination remains the responsibility of an appropriately accredited verifier.
The methodology also provides for a second model under which a local technical specialist performs defined tasks under the supervision of an EU-accredited verifier. Such activities can include site inspections, process observation, interviews, technical testing and evidence collection at a non-EU facility. Under this structure, the accredited verifier retains authority over the verification strategy, risk assessment, materiality, sampling, findings evaluation, independent review and final conclusion.
Responsibility and independence are defined separately
Clarion’s framework establishes an independence barrier between advisory preparation and accredited verification. A consultant responsible for preparing a factory’s system should not subsequently submit work concerning the same facility and reporting period as independent verification. The methodology requires competence, confidentiality, delegated authority and conflicts of interest to be documented.
The separation addresses a wider challenge in the expanding CBAM assurance market, where manufacturers need to distinguish technical and advisory assistance from work that carries the legal significance of accredited verification.
Clarion has structured this distinction through separate responsibility matrices, engagement models and reporting lines. Its method statement incorporates work-breakdown structures, RACI matrices, data registers, meter inventories, precursor logs, risk-and-control matrices, corrective-action records and verifier request trackers. The framework also proposes a digital “data room” through which authorised evidence can be supplied to the verifier and, where appropriate, the EU customer.
MRV systems can be implemented in stages
Factories can introduce the methodology progressively, beginning with a scope and gap assessment and moving through system design, implementation of data controls, pilot calculations, internal Pre-Verification and corrective action. The final stages involve preparation for accredited verification followed by routine monthly and annual operation of the MRV system.
For EU importers, the approach is intended to provide earlier visibility over potential carbon exposure rather than waiting until the reporting deadline. Buyers can seek contractual rights to obtain emissions information, challenge calculations, request supporting documentation and receive advance notice of changes that could affect embedded emissions. Commercial agreements may also include reporting schedules, verification obligations and remedies for incomplete or delayed information. Suppliers that cannot meet those requirements could be exposed to the application of less favourable default values, delayed orders or pressure to renegotiate commercial terms.
Factory records remain critical to the framework
The methodology nevertheless depends on the quality of the underlying factory information and the cooperation of upstream suppliers. Procedures cannot compensate for missing meters, inconsistent production records or precursor suppliers that do not provide credible information. The framework also does not transfer the legal responsibilities of the authorised CBAM declarant, factory operator or accredited verifier.
Clarion’s stated role is to connect those parties and their respective responsibilities before formal reporting and verification takes place. For industrial exporters, the framework places emissions information within the same operational discipline as production quality, financial reporting and customs documentation, as CBAM requirements increasingly affect interactions between manufacturers and their European customers.
