Steel and Aluminium DPP: Carbon Evidence, CBAM and Circular Material Data

Why metals are a priority

Iron and steel and aluminium are priority intermediate products in the Commission’s 2025–2030 ESPR working plan. The indicative adoption timetable is 2026 for iron and steel and 2027 for aluminium. These are expected policy milestones, not proof that a final passport field list or market application date already exists. 1

Their inclusion reflects metals’ environmental significance and their influence on downstream products. A material producer’s data can affect the footprint and circularity claims of vehicles, machinery, appliances and buildings.

For these sectors, the digital product passport problem is less about creating a consumer-facing page and more about preserving reliable evidence through complex transformations: slabs become coils, billets become extrusions, coils become parts, and scrap returns through different production routes.

The central task is to connect physical material identity, production evidence and method-specific environmental information without pretending that one carbon number satisfies every regulatory purpose.

Separate the regulatory layers

A metals business may face several overlapping information requests.

Instrument or system	Primary purpose	Why it is not interchangeable with a DPP
ESPR product measures	Product sustainability and information requirements	Final metal-specific obligations depend on adopted measures
CBAM	Carbon-price adjustment for covered imports	Uses its own scope, emissions rules and customs responsibilities
EU ETS	Installation-level emissions and carbon pricing	Installation data is not automatically a product footprint
Product carbon footprint	Climate impact attributed to a product	Depends on boundary, allocation and methodology
Environmental product declaration	Structured lifecycle environmental disclosure	Usually covers more than climate change
Mill or inspection certificate	Material specification and test evidence	Does not by itself establish environmental performance
Private low-carbon label	Scheme-defined performance communication	Thresholds and verification differ between schemes

The expected ESPR passport should connect these records where useful. It should not merge their legal meanings.

A steel inspection certificate may confirm grade and mechanical properties for a heat or batch. A footprint may cover a production route and reporting period. A CBAM declaration concerns imported goods and embedded emissions under its own rules. Mapping among them requires explicit assumptions.

CBAM’s definitive phase began in 2026

The definitive CBAM regime applies from 1 January 2026. For covered goods, importers or their indirect customs representatives must assess authorisation, embedded-emissions declarations and certificate obligations. Under the simplified regime, a single annual mass-based threshold of 50 tonnes applies to relevant covered imports; it is not a universal exemption for all CBAM sectors or a threshold assessed separately for every shipment. 1

Steel and aluminium coverage is determined by the regulation’s commodity codes and conditions. “Contains steel” is not sufficient to conclude that a product is covered, while a downstream-looking product may still fall within a listed code.

For 2026 imports, certificate purchases begin from February 2027. The first annual declarations and corresponding certificate surrender are due by 30 September 2027 under the amended timetable. This distinction matters for budgeting: financial exposure arises from 2026 imports even though purchases and annual settlement occur later. 3

Certificate prices use quarterly EU ETS auction-price averages for 2026 and weekly averages from 2027. Carbon prices effectively paid in the country of production can be relevant to deductions, subject to the applicable evidence rules. 4

What a passport can contribute

A passport-ready data system can preserve installation identity, production-route information, reporting periods, precursor data and verification references. This can reduce repeated supplier questionnaires.

However, a supplier’s “DPP carbon footprint” is not automatically a valid CBAM emissions figure. The importer must still ensure that the value meets the applicable CBAM methodology and verification requirements.

Carbon methodologies: the boundary is part of the result

A meaningful carbon value needs more than a number and a unit. At minimum, record:

The product and declared unit.
System boundary and included production stages.
Reporting period and geographical coverage.
Production route and relevant electricity treatment.
Precursor and other upstream inputs.
Allocation rules for co-products and scrap.
Primary versus secondary data.
Verification status and methodology version.

For example, a tonne of crude steel at the steelworks gate is not the same declared product as a tonne of coated coil after rolling, annealing and coating. Comparing their values without adjustment can reward an incomplete boundary rather than a genuinely lower-emission product.

Steel-specific issues

Steel footprints are sensitive to the production route, ore and metallic inputs, coke and other reductants, fuel use, electricity and finishing operations. Electric-arc-furnace steel is not inherently zero-carbon: the metallic charge, grid mix, electrodes, fuels and upstream production remain relevant.

Hydrogen-based direct reduced iron also requires evidence about hydrogen production and electricity. “Hydrogen-ready” equipment describes technical capability, not demonstrated emissions performance for a particular delivery.

Aluminium-specific issues

Primary aluminium’s footprint can be strongly affected by electricity used in smelting, as well as alumina refining, anode consumption and process emissions. Remelting scrap generally avoids many primary-production stages, but the resulting footprint still depends on collection, preparation, metal yield, alloy additions and energy.

A low-emission smelter does not automatically establish the footprint of a finished extrusion. Billet casting, transport, extrusion, heat treatment and surface finishing may need inclusion depending on the declared boundary.

Recognised frameworks such as ISO 14067 and lifecycle-based product rules can support product-carbon accounting, while construction EPDs commonly use EN 15804. None should be assumed to replace the specific methodology ultimately adopted under ESPR.

Recycled content: distinguish the physical flow from the claim

Recycled content is commercially important, but an unqualified percentage can obscure major differences:

Pre-consumer versus post-consumer scrap.
Purchased scrap versus internal process returns.
Physical segregation versus controlled blending.
Product-specific measurement versus site-level allocation.
Mass-balance accounting versus physical content.

These distinctions should be stored as separate attributes, not compressed into a single “circularity” field.

Internal scrap loops require particular care. Material that never leaves an integrated production process may receive different treatment from recovered scrap under a given standard. A company should not count the same loop repeatedly to inflate a recycled-content claim.

For aluminium, alloy compatibility and contamination affect whether recovered material can return to an equivalent application. For steel, residual elements can constrain certain high-quality applications. A high recycled-content percentage therefore does not alone establish suitability, recyclability or closed-loop performance.

An expected DPP should support evidence about material quality and recovery routes as well as quantity. Exact mandatory content definitions and thresholds remain expected until established in final applicable measures.

Low-carbon steel labels: useful, but not a universal legal grade

The Commission’s 2025 Steel and Metals Action Plan identifies lead markets and demand for cleaner metals as policy priorities. It is a policy communication, not a certificate proving that a particular steel product qualifies as low-carbon. 2

The March 2026 Industrial Accelerator Act text is a proposal. Requirements depending on its final adoption remain expected, and businesses should not market a proposed EU framework as an already mandatory certification system. 1

Private labels and buyer specifications can be useful, but their boundaries and thresholds vary. Some approaches account for scrap availability or distinguish production routes; others apply an absolute intensity threshold. A product can qualify under one scheme without qualifying under another.

A defensible claim should therefore state the scheme, version, boundary, certified entity or product, verification status and applicable period. “Green steel” without that context is weaker than a specific verified emissions statement.

Expected steel and aluminium DPP data

The following is a readiness model, not a final mandatory field list.

Expected area	Recommended attributes
Identity	Producer, facility, product, grade and relevant batch or heat identifiers
Technical specification	Composition, dimensions, applicable standards and certificate references
Production	Route, relevant process stages and reporting period
Climate	Value, unit, boundary, method, allocation and verification
Circular inputs	Recycled-content categories, calculation method and evidence
Substances	Relevant substances-of-concern information
Downstream use	Processing constraints, joining or coating considerations where useful
End of life	Sorting, separation and recycling guidance
Compliance links	Relevant declarations, inspection records and scheme references

Granularity should follow the legal measure and practical traceability needs. A heat-level identifier cannot simply be carried unchanged through every split, blend and transformation without recording parent–child relationships.

For example, a service centre cutting several coils into customer orders needs a way to preserve source-coil references. A remelter combining scrap streams needs a different model. Both may be valid, but they support different claims.

Implementation checklist

Map products to ESPR workstreams and CBAM commodity codes separately.
Determine importer and authorised-declarant responsibilities.
Monitor annual covered-import volumes against the applicable threshold.
Collect installation and precursor data before year-end reporting.
Keep CBAM emissions distinct from lifecycle product footprints.
Record boundaries, units and methodology versions with every carbon value.
Define recycled-content categories and accounting rules.
Connect heat, cast, coil, billet and shipment identities.
Preserve evidence through cutting, blending and remelting.
Review low-carbon claims against the exact scheme used.
Design public and restricted data access separately.
Treat unadopted passport requirements as expected.
Test one real customer-to-producer evidence request end to end.

The strongest preparation is not a premature declaration of “DPP compliance”. It is a traceable material-data system capable of producing the correct evidence for the correct legal or commercial purpose.

Sources

Last reviewed 2 November 2026. Guidance only — not legal advice. View as Markdown