Southeast European cement and fertiliser producers may face CBAM exposure linked to materials manufactured outside their own facilities. For cement grinding plants and fertiliser blending businesses, emissions tied to upstream inputs can outweigh those from local processing. Supplier data and sourcing decisions therefore play a central role for information provided to EU customers.
Both sectors rely on upstream materials, but their emissions calculations use different production boundaries and monitoring requirements. Cement assessments must include clinker, finished-product composition and processing activities. Fertiliser calculations depend on chemical precursors, nitrogen content and the specific manufacturing route. The European Commission’s approach for other industries would not capture these sector-specific requirements.
Clinker sourcing and composition for cement emissions reporting
The European Commission’s sector guidance addresses clinker and a composition-based calculation used for cement. A grinding plant purchasing clinker must identify its source, obtain the applicable emissions information and include emissions from its own processing activities. Clinker content is a key parameter in cement emissions reporting and procurement.
A grinding business considering a different clinker share must assess the potential emissions impact alongside product composition, strength requirements and customer specifications. Reducing the clinker ratio can offer advantages only if the resulting cement remains suitable for its intended use and alternative constituents are available reliably. Producers should not base commercial claims solely on lower calculated carbon intensity without confirming technical suitability.
Material traceability is also part of the calculation process. A plant may receive clinker from multiple production installations, store it and allocate it across different cement products. The calculation needs a defensible link between sources, quantities consumed and resulting output, because annual purchase totals may not reflect the input mix used during the relevant reporting period.
This setup can create verification challenges for grinding businesses. Records for local electricity and fuel consumption may be available, while upstream clinker emissions reports can be difficult to obtain. The risk is higher when purchases are made through traders rather than directly from producing installations.
Supply agreements are expected to cover the availability of evidence needed for calculations. Any change in clinker source should trigger a review of both documentation and technical quality requirements.
Fertiliser precursors, nitrogen content and manufacturing routes
Fertiliser manufacturers face different upstream dependencies under the Commission guidance. It identifies chemical precursors such as ammonia and addresses indirect electricity emissions where applicable. Nitric acid production requires specific monitoring of nitrous oxide (N₂O) using the relevant measurement approach.
The production route must be mapped before an operator can determine which information is required for the calculation. A fertiliser blending facility purchasing chemicals may have relatively limited emissions at its own site while relying on multiple upstream production records. Management needs to identify covered inputs and determine how their quantities and relevant characteristics feed into the finished product’s calculated emissions.
A supplier’s general sustainability report may provide background but may not include product-specific or installation-specific evidence required for calculations. Product composition also affects how emissions figures are communicated to customers. Comparisons between fertilisers should use consistent product definitions and applicable units, because figures per tonne of commercial product should not be compared indiscriminately with values based on different functional units or compositions.
Manufacturers are expected to state what each reported intensity represents and keep that definition consistent across documentation and customer communications.
Electricity treatment alongside precursor emissions
Electricity plays a different role in these sectors than the direct-emissions-only treatment applied to Annex II metal goods. Cement and fertiliser producers must examine electricity consumption and the relevant calculation factors under rules governing their products. Businesses considering renewable electricity arrangements should verify whether those arrangements satisfy applicable requirements for the intended emissions treatment.
A general claim that electricity is renewable does not, by itself, establish compliance with the relevant methodology. Electricity procurement also needs to be assessed together with precursor sourcing. A cement plant may improve its electricity supply while remaining exposed to high-emissions clinker sources, while a fertiliser blender may reduce energy use locally even if emissions from purchased chemicals dominate its product calculation.
Investment decisions should compare how much each emission source contributes in order to identify where feasible reductions are largest. Upstream improvements may offer the greatest impact even when local energy-efficiency measures remain financially worthwhile.
Inventory management, logistics costs and evidence consistency
Seasonal procurement and stock management can affect how reliable emissions records are. Producers may buy materials ahead of expected demand or maintain buffer inventories to protect against supply interruptions. Reporting teams must separate quantities purchased during a period from quantities actually consumed in production.
This distinction supports a more reliable calculation and helps explain differences between cash purchasing expenditure and material costs attributed to current production. Transport, storage and financing costs also need inclusion when comparing alternative suppliers.
Switching the source of clinker or ammonia can change freight expenditure, warehousing requirements and working-capital needs, even when those costs do not fall within the embedded-emissions boundary used for CBAM calculations. The commercial sourcing model should remain consistent with the regulatory calculation while keeping a clear distinction between financial costs and emissions included under CBAM.
Controls for evidence gaps in upstream input data
Smaller cement and fertiliser producers can start by focusing on a limited number of critical inputs rather than investing immediately in extensive automation. A precursor register, supplier documentation schedule and reconciliation of consumption against production can help identify key information gaps.
Additional meters and monitoring controls should be prioritised where they improve reliability of parameters required by the applicable calculation. Investment should respond to defined monitoring needs rather than simply increase installed equipment capacity.
Producers also need to distinguish between lower reported emissions intensity and changes in their final CBAM certificate requirement. The certificate calculation and adjustments need separate assessment because a percentage reduction in reported intensity does not necessarily translate into an equivalent percentage reduction in final cost.
EU customers may value lower reported intensity for commercial or environmental reasons, but financing decisions are expected to rely on expected cost effects under applicable rules rather than an assumed proportional relationship.
Procurement choices affecting export positions
For Southeast European cement and fertiliser exporters, procurement decisions can determine a substantial part of final export position. The most useful comparison is between complete supply routes that provide both technically acceptable products and documentation needed to support emissions calculations.
Efficient grinding and blending operations cannot replace missing production data for materials received from upstream sources.