From 2026, the EU’s Carbon Border Adjustment Mechanism enters its definitive regime. EU importers or indirect customs representatives importing above the 50-tonne single mass-based threshold must be authorised CBAM declarants, declare embedded emissions and surrender CBAM certificates. Certificate prices are linked to the EU ETS allowance price, and a carbon price effectively paid in the country of production may be deducted where proven.
The CBAM scope covers cement, iron and steel, aluminium, fertilisers, hydrogen and electricity. For embedded-emissions calculations, indirect emissions refer to emissions from electricity consumed during production. In the definitive framework, CBAM is limited to direct emissions for iron/steel, aluminium and hydrogen, while cement, fertilisers and agglomerated iron ore must declare both direct and indirect emissions.
Electricity MRV remains relevant for steel and aluminium because a June 2026 Commission technical study examines default electricity emission factors and the conditions for claiming actual indirect emissions. The study also covers requirements for PPAs, direct technical links and verification, alongside possible extension of indirect-emissions coverage to additional CBAM sectors.
What makes a product “CBAM-ready” on electricity
A CBAM-ready product is not created by buying “green electricity” or attaching a Guarantee of Origin. It depends on whether the factory can prove, through a CBAM-compatible MRV system, that electricity used in production has been measured, allocated to the relevant production process and linked to an acceptable electricity emission factor. The evidence must then be carried through to the product-level embedded-emissions calculation used by the EU importer in the CBAM Registry.
The underlying calculation for indirect embedded emissions is based on electricity consumed in the production process multiplied by the applicable electricity emission factor. The result is then allocated per tonne of product or per relevant functional unit. The electricity factor can be a grid factor or an actual electricity factor where CBAM rules allow it.
The commercial value of a green electricity purchase depends on whether the buyer can use purchased electricity as an actual emissions input in the CBAM calculation. Otherwise, the calculation is forced back to a national or regional default factor rather than reflecting the contracted supply.
Electricity contracts as evidence for MRV
Factories are described as buying more than MWh when they procure power for CBAM-relevant production. A CBAM-ready electricity purchase agreement should combine four layers: physical or contractual supply, metered generation and consumption data, emission-factor evidence and audit rights. A generic statement that electricity is “renewable” is treated as weak without plant-level evidence.
On the buyer side, factories should require sellers to identify the exact generation asset, technology, location, installed capacity, grid connection point and metering point. The seller should also provide balancing party details, delivery profile information, settlement period information and ownership of environmental attributes so that claims can be reconciled with factory consumption and CBAM product boundaries.
On the seller side, renewable producers or suppliers are expected to provide an evidence package beyond invoices. This includes generation-meter data, net electricity exported and hourly or sub-hourly generation profiles, plus a plant emission factor and meter calibration records. It also covers outage and curtailment records, delivery schedules and market or TSO/DSO confirmations where available.
Where Guarantees of Origin, I-RECs or equivalent instruments are used, certificate cancellation records must be provided as part of the evidence set. For wind, solar and hydro, the relevant logic focuses on direct CO₂ emissions during electricity production; upstream emissions such as manufacture and installation of wind turbines are not counted for embedded emissions of electricity.
PPA structure versus retail supply
The most robust arrangement is behind-the-meter renewable generation or a direct technical link between the generation source and the factory. A physical PPA with a named generator is described as second-best when supported by metering, scheduling, certificates and audit rights. An ordinary retail supply contract with unbundled green certificates is described as the weakest structure.
Commission guidance during the transitional phase states that actual electricity emission factors may be used where there is a direct technical link or a power purchase agreement between producer and consumer. It also states that market-based certificates such as Guarantees of Origin or Green Certificates cannot by themselves justify actual emission factors.
This point is framed as central commercially: GOs, I-RECs and similar certificates are useful control documents but are not substitutes for CBAM-grade PPA arrangements with metering and allocation systems. They can help prevent double counting and support renewable claims while still requiring metered electricity consumption data, acceptable emission factors and product-level allocation for CBAM-ready product claims.
Buyer–seller documentation for verification
The verification framework links two relationships: one between the factory as an electricity buyer and its generator/trader/supplier counterpart; another between the EU importer as goods buyer and the factory as goods data seller. The factory sits in between by supplying both electricity procurement evidence and CBAM-relevant product data.
The EU product buyer should request a CBAM Electricity And MRV Annex from each factory seller. The annex should require details including installation name, location and operator identity; CN codes; production routes; functional units; production volumes; direct emissions; indirect electricity consumption; an electricity source split; emission factors used; evidence for each factor; precursor data; carbon price paid where relevant; plus confirmation whether actual verified emissions or default values are being used.
The buyer should also require a green electricity evidence file containing PPA documentation, generator identity and plant technical description. It should include grid connection evidence, metering hierarchy information, generation data and delivery data alongside certificate serial numbers with cancellation confirmations. Settlement records should be included together with a no-double-counting declaration.
If a trader sits between generator and factory, contracts must pass through generator-level data rights rather than relying on trader invoices alone. A monthly electricity-to-product reconciliation from the factory seller should show total grid imports alongside PPA-supplied volumes, on-site renewable generation and backup generation. It should also cover exported power volumes, auxiliary consumption, process-level electricity use and final allocation to CBAM goods with reconciliation against ERP production data plus SCADA or EMS data.
MRV integration inside factories
A CBAM-ready factory MRV system should start with installation boundaries rather than beginning at PPA level. Factories must define which installations, production processes, CN codes and functional units are covered under their MRV coverage plan. CBAM does not allow artificial splitting of the same CN-code production process merely because some batches are sold to the EU while others are sold elsewhere.
The Commission’s Q&A states that within one installation there cannot be more than one production process per same functional unit. It also states that EU-bound and non-EU-bound lots cannot be artificially split for the same CBAM good under those conditions.
The MRV system’s electricity module should operate as an energy balance recording every MWh entering an installation from all sources plus every MWh generated on site and exported out of it. It should also record every MWh consumed by each relevant production process during reporting periods. Electricity categories should include on-site renewable output, direct-line supply, PPA-backed supply, ordinary grid supply, backup diesel/gas generation and unverified supply with each category receiving its own emission factor and evidence status.
The product module converts that ledger into specific embedded indirect emissions using allocated results from process-level consumption records. For example given in-source figures: where a cement or fertiliser line consumes 100,000 MWh in a reporting period to produce 500,000 tonnes, electricity intensity is 0.20 MWh/t before further allocation adjustments. When 70,000 MWh are covered by qualifying renewable PPA supply with an accepted low actual factor while 30,000 MWh comes from grid electricity, product-level indirect emissions must be calculated from weighted mixes rather than marketing claims about exported portions being fully green.
Monthly controls and year-end verification readiness
The MRV system should include monthly control cycles at month-end when meter data are frozen for reconciliation purposes. Factories should reconcile meter readings against invoices and settlement data while matching PPA generation to consumption figures. Certificates should be reconciled before allocating electricity to production processes so preliminary product emissions can be calculated with identification of any data gaps.
An internal CBAM electricity report should be issued after those month-end steps complete. At year-end this same system becomes the basis for operator emissions reports plus verifier evidence packs required for declared embedded emissions from 1 January 2026 onward.
Requests to factory sellers from EU buyers
The buyer should ask for a CBAM-ready product data sheet for each CN code and product family covering reporting period details along with production installation information. It should state product quantity plus direct embedded emissions figures where applicable alongside indirect embedded emissions where relevant. It should also include electricity consumption per tonne together with the specific emission factor used plus its source.
The same sheet should specify share of electricity covered by PPA or direct link alongside precursor emissions values where applicable. Carbon price paid information must be included where relevant along with free-allocation adjustment information where applicable plus verification status details tied to declared values.
A seller declaration on electricity claims is also required confirming that renewable claims are not double-counted across products using certificates cancelled either for buyers or relevant consumption at factory level. The declaration should confirm that identical MWh have not been claimed by another product while stating that data will be retained for audit purposes. It must also commit to notifying changes in PPA arrangements including supplier identity generator identity metering configurations or production route changes before shipment .
Pre-verification expectations ahead of first definitive declarations
For strategic buyers including EU steel aluminium cement fertiliser automotive construction-materials and chemicals customers described in-source materials require pre-verification before formal CBAM verification cycles begin. This pre-verification approach is described as reducing commercial risk ahead of first formal declaration cycles but it does not replace accredited CBAM verifier work.
The Commission says operators should take concrete steps during 2026 to monitor and calculate embedded emissions then find an accredited CBAM verifier . First verification work is expected to support first definitive declarations due by 30 September 2027 for imports covering 2026 .
Commercial risks tied to certificates data access allocation
The largest risk identified is greenwashing through certificates where factories buy certificates but cannot connect them to production through acceptable CBAM evidence systems . A second risk concerns data fragmentation when energy procurement ESG finance teams hold parts of evidence without linking MWh inputs to tonnes of product within one MRV file set.
A third risk involves product misallocation when companies assign low-carbon electricity only to EU-bound sales without maintaining a CBAM-acceptable production boundary under MRV rules . A fourth risk concerns supplier opacity especially when traders cannot pass through generator-level data rights needed for reconciling evidence packages at plant level .
What buyers seek beyond generic ESG claims
The commercial opportunity described focuses on producers offering verified electricity-linked CBAM data rather than generic ESG claims . The premium described does not come from using “green” terminology but from lower CBAM exposure along with lower default-value risk during embedded-emissions calculations performed by declarants . Faster customs processing plus smoother operations in CBAM registry workflows are also cited alongside stronger long-term offtake contracting potential tied to industrial demand .
A real framework described in-source has three layers: contracted green electricity backed by verified generation-and-consumption evidence plus factory-level MRV integration into product embedded-emissions calculations . Without all three elements present simultaneously products may still carry renewable branding but would not meet what matters commercially for EU importers verifiers lenders and industrial buyers within this framework .
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