Renewable electricity has typically been traded using a set of instruments in which the producer supplies power, the trader handles scheduling and balancing, and the buyer receives contractual volumes supported by guarantees of origin. Under the European Union’s Carbon Border Adjustment Mechanism, that structure is no longer sufficient when an authorised CBAM declarant seeks to use actual embedded emissions for imported electricity. The shift concerns how a claim is substantiated rather than how electricity is generated.
In the CBAM actual-emissions approach, a renewable certificate establishes an attribute, while a CBAM claim requires an auditable chain linking a named generating installation, a physical power purchase agreement, hourly production, transmission capacity nominations, network conditions, an identified EU declarant and an accredited verifier. Clarion.Engineer developed a green electricity monitoring, reporting and verification dashboard for solar, wind and battery energy storage projects. The stated purpose is to convert regulatory and operational requirements into a controlled management system.
Eligibility criteria for actual embedded emissions in EU imports
Electricity has a specific role under CBAM because default emission factors are the standard route. Installation-specific actual emissions can be used only if cumulative conditions are satisfied. For electricity imported into the EU, European Commission definitive-period guidance identifies five cumulative criteria.
The claimed volume must be covered by a power purchase agreement between the authorised CBAM declarant and a producer in a third country. The generating installation must be directly connected to the EU transmission system or there must have been no physical network congestion along the relevant route at the time of export. The installation must emit no more than 550 grams of fossil-origin CO2 per kilowatt-hour.
The claimed electricity must also be firmly nominated across relevant interconnection capacity, with production and nomination referring to the same period of no more than one hour. Fulfilment must be certified by an accredited verifier receiving at least monthly interim reports.
The five criteria are not weighted, so passing four out of five does not create an 80 per cent-compliant claim. Failure of any single condition can return the electricity to the default-value route. The dashboard therefore starts with an eligibility gateway rather than an emissions calculation.
It records each legal test status as passed, at risk, blocked or not assessed, and it identifies responsible parties, required evidence, reporting periods, latest review dates and corrective actions. In a demonstration baseline model, two of five gates are passed, two are at risk and one is blocked. The figures are described as illustrative of readiness exposure rather than performance of any particular plant.
From document storage to controlled evidence layers
The dashboard addresses how evidence is handled when companies initially respond to new reporting obligations by creating shared folders for contracts, meter files, guarantees of origin and emissions calculations. Storing documents does not establish relationships between them for verification purposes. A verifier needs traceability through data flows to identify origins, transformations and reviewers.
Clarion.Engineer’s model organises MRV into three layers of controlled truth. The first layer covers fixed installation truth including operator identity, generating installation details, ownership structure, geographical location and technology. It also includes installed capacity, connection point, single-line diagram, metering boundary and hierarchy of measurement devices.
The second layer covers hourly operational truth by connecting revenue meters, SCADA and power plant controller data with production schedules and balancing records. It also incorporates grid imports, auxiliary consumption, curtailment, outages, interconnector nominations and settlement information. For battery storage systems it adds charging sources, state of charge, losses, discharging volumes and source-attribution ledgers.
The third layer covers assurance and handover truth through monitoring plans, control descriptions and data-quality checks. It includes management approvals, monthly evidence packs, findings and corrective actions as well as verifier requests and declarant-specific reporting outputs. The current model contains 71 structured inputs across these layers.
Each input is assigned a definition, format, unit, owner, source system, reporting frequency, approval requirement and evidence reference to reduce ambiguity when different teams use different names for the same quantity. A single field such as “eligible exported electricity” can otherwise refer to gross generation, net generation, metered export, nominated export or settled export or contract-covered volume. Under CBAM these are treated as non-interchangeable quantities.
Six handovers tracking each claimed megawatt-hour
The dashboard follows each claimed megawatt-hour through six controlled handovers described as determining whether a claim survives verification. The first establishes asset truth covering installation identity, technical boundary and connection architecture. The second establishes hourly truth using meters, SCADA and power plant controller data with time synchronisation.
The third handover adds contractual truth including the PPA and declarant identity before subsequent steps connect delivery evidence to claim eligibility. The overall design emphasis is on reconstructing each claimed quantity from original source evidence through eligibility tests that can be defended during accredited verification.
Technology-specific controls for solar PV and wind farms
The dashboard distinguishes between legal gateway requirements that apply across renewable technologies and operational evidence that differs by technology type. For solar photovoltaic installations it focuses on defining relationships between inverter output, transformer losses, auxiliary consumption, clipping, curtailment and grid imports at the point-of-connection meter. It addresses cases where total inverter production exceeds exported electricity measured through revenue metering.
The solar module reconciles inverter-level data to transformer and revenue-meter values while recording curtailment instructions, plant availability and auxiliary loads. It also checks whether the power purchase agreement basis for the claimed CBAM quantity aligns with gross generation or net eligible export rather than mixing measurement bases without documentation.
For wind farms operational controls start at turbine level and continue through collection systems, transformers and revenue metering points. Turbine SCADA totals may differ from settlement quantities due to electrical losses, availability exclusions or timestamp differences or data substitutions noted in the model description.
The wind module tests turbine completeness through collection-system losses and transformer losses alongside outage records and dispatch instructions. It also checks alignment among turbine controllers, the power plant controller, SCADA systems and settlement systems while treating missing turbine data or unexplained adjustments as exceptions rather than absorbing them into monthly totals.
BESS attribution ledger integrated into CBAM eligibility
Battery energy storage is described as creating an attribution problem because it shifts electricity in time while introducing conversion losses rather than producing a new renewable megawatt-hour by itself. If charging comes from both a renewable installation and the grid then discharged quantities cannot automatically be classified as renewable or linked to the original power purchase agreement without additional attribution controls.
The dashboard maintains a separate battery ledger for every reporting interval covering opening state of charge plus renewable charging versus grid or mixed-source charging along with charging losses and standing losses. It also tracks discharge volumes and closing state of charge plus any quantity previously claimed before storage entry.
A conservative control limits eligible battery discharge so it cannot exceed eligible charge after losses and prior claims. A megawatt-hour claimed before entering storage cannot be claimed again after discharge within this framework.
This requires distinct metering or reliable source flags for different charging streams when batteries share connections with solar or wind generation. The system must demonstrate whether charging occurred directly from the renewable facility or from grid supply or mixed sources while establishing loss treatment rules that prevent simultaneous appearance in generator versus battery ledgers.
Monthly close process from D+1 freeze to D+10 interim pack
The dashboard operates using a monthly close process rather than assembling information retrospectively at year-end. In this model D denotes the reporting cut-off date normally set as the final day of the month with subsequent milestones measured in working days.
At D+1 source data are frozen including meter readings together with SCADA records and power plant controller data plus energy-management system inputs along with schedule files transmission files and settlement files secured in their original form to prevent uncontrolled changes after reporting begins.
By D+3 generation imports exports storage quantities are reconciled with gaps duplicates timestamp differences and unexplained losses entered into an exception register. At D+5 hourly matching completes so eligible quantities are constrained by available generation contractual volume nominated capacity import quantity and other applicable limits while unsupported quantities are excluded rather than carried into claims.
At D+7 evidence packs undergo a four-eyes review involving data owners confirming source records control owners reviewing exceptions and management assessing open findings or changes to monitoring systems. By D+10 a monthly interim evidence pack is issued containing controlled hourly ledgers reconciliation exception reports supporting documents management approval plus evidence required for verifier review.
Verification planning aligned with EU guidance on accreditation
The dashboard design also changes how producers relate to accredited verifiers because verification is not treated as only a final inspection of completed spreadsheets. European Commission 2026 guidance describes verification extending from pre-contract stage through strategic risk analysis verification planning process analysis site visits findings independent review issuance of verification reports plus testing of data flows control activities treatment of data gaps and assessment of monitoring plans.
A well-structured dashboard mirrors this approach using a control register showing addressed versus open risks an evidence index enabling tracing from sampled megawatt-hours back to original meter SCADA record contractual entitlement and nomination plus a change log describing modifications to meters software calculation rules or responsible personnel details. It also uses a findings register separating errors non-conformities from improvement actions while maintaining verifier independence by treating pre-verification as management preparation only.
Implementation via work packages WP-00 to WP-09
Implementation is organised through ten work packages numbered WP-00 to WP-09 described as cross-functional across engineering metering operations commercial trading finance compliance roles plus verifier input requirements that cannot replace missing evidence creation by others. The first group establishes governance CBAM pathway installation boundary and data architecture while the second completes physical-delivery PPA grid-route evidence technology-specific controls plus monthly close procedures.
The final group covers representative-month testing remediation activities plus accredited handover steps intended to validate whether design works under operating conditions including missing data curtailment outages storage activity or settlement differences during one full reporting month cycle from source freeze through evidence pack creation and pre-verification review.
Elevated by CBAM.Clarion.Engineer
