Steel supplied to European Union customers can carry different emissions profiles depending on how it is produced, which materials enter the process and how the resulting emissions are documented. For exporters in southeastern Europe, demonstrating compliance with the EU Carbon Border Adjustment Mechanism (CBAM) requires product-specific evidence that reflects the relevant production route and applicable calculation methodology.
An integrated steelworks, an electric arc furnace (EAF) producer and a downstream processor purchasing semi-finished or finished steel face different reporting challenges. Their emissions sources, material flows and reliance on upstream suppliers vary, making a single generic assessment insufficient to establish the quality of their CBAM data.
For EU buyers comparing competing steel offers, the relevant emissions figure must be attributable to the goods being purchased and supported by the applicable methodology. General statements about the relative emissions performance of different production routes cannot replace a calculation for the specific product.
Integrated Steelworks Face Complex Carbon Accounting Requirements
Integrated steel production requires manufacturers to track carbon-bearing fuels, reducing agents, process gases and intermediate materials as they move through connected operations. Coke, coal and other inputs can create complex relationships between production stages, requiring complete accounting boundaries and consistent treatment of material flows.
One key requirement is to prevent the same carbon movement from being counted more than once. Producers must maintain records that connect emissions sources with the relevant processes while preserving the boundaries needed to calculate the emissions attributable to the goods produced.
Electric arc furnace operations have a different set of material and emissions considerations. Their reporting systems need to account for scrap, purchased metallic inputs, electrodes, carbon additions and fuels in relation to the production process.
Where relevant precursor materials enter an EAF operation, their treatment must follow the applicable CBAM methodology. The use of an electric furnace does not, by itself, establish that the resulting steel has negligible embedded emissions.
Scrap Classification and Precursor Data Require Traceability
Scrap accounting warrants particular attention, including the identification and treatment of internally recirculated material. Purchase-order descriptions alone may not resolve every classification question, and a scrap designation does not eliminate emissions generated during melting, heating or subsequent processing.
Steel producers therefore need to document material identities and apply the relevant classification and calculation rules consistently. The treatment of scrap and other metallic inputs must reflect the actual production process rather than assumptions based solely on the material’s commercial description.
For rolling mills and downstream processors, the main reporting challenge may lie with the steel purchased from other manufacturers. Although local processing operations can have comparatively limited emissions, the slab or coil used as an input may carry substantial upstream emissions into the final product.
Where actual precursor emissions data are used, information on purchased slab or coil needs to be connected to the installation that produced the material. Without that link, a processor may struggle to substantiate the emissions figure associated with its output.
Cross-Border Steel Procurement Also Depends on Data Availability
For companies purchasing steel from Türkiye, China and other third markets, the timing of upstream emissions information can become a separate operational issue. Physical deliveries may arrive according to schedule while the supporting emissions documentation remains outstanding.
Procurement departments therefore need to consider the reliability of emissions data alongside delivery performance when evaluating suppliers. The availability of information from upstream producers can affect whether a manufacturer has the evidence required to support its own CBAM reporting obligations.
This dependency is particularly relevant to processors that do not control the production installations responsible for generating much of the embedded emissions in their purchased materials. Their ability to substantiate product-level figures depends partly on the information supplied by external producers.
Direct Emissions, Electricity and Production Volumes Need Separate Treatment
Under the current definitive CBAM framework, direct emissions are generally taken into account for steel goods listed in Annex II. The applicable treatment of individual products and precursors, including relevant exceptions, must nevertheless be checked against the relevant rules.
Electricity procurement claims should not be treated as a universal explanation of a steel product’s CBAM liability. The applicable emissions categories and calculation requirements must be assessed for the specific goods concerned rather than inferred from a general description of the plant’s energy supply.
Production volumes present another potential source of reporting errors. Tonnes of input material, liquid steel output, cast material and saleable finished products represent different quantities and cannot automatically be used interchangeably as calculation denominators.
Manufacturers must reconcile these volumes using the relevant production-process definitions. If the emissions total is divided by an inappropriate tonnage figure, the resulting emissions intensity can be misstated even when the underlying emissions total is accurate.
Route-Specific Improvements Must Be Supported by Comparable Measurements
Engineering changes involving production yields, fuel consumption or material sourcing can affect embedded emissions. Demonstrating the effect requires comparable measurements and consistent accounting boundaries so that changes in emissions intensity can be assessed against an appropriate production basis.
Companies also need to distinguish genuine efficiency improvements from changes in production mix. A different distribution of products or production routes can alter reported emissions figures without necessarily representing an improvement in the efficiency of an individual process.
For steel exporters in southeastern Europe, a substantiated low-emissions claim must identify the product, the installation and the production route, with a calculation that can be reproduced from the supporting records. The emissions figure presented to an EU buyer must remain connected to the specific steel being supplied and the methodology used to establish its embedded emissions.
