Carbon-related material costs are becoming an important procurement consideration for European construction and infrastructure projects, which rely heavily on cement, steel and aluminium. Buildings, bridges, railway developments and energy infrastructure incorporate these materials in products ranging from clinker and cement to reinforcing bars, structural steel, aluminium façades, pipes, fasteners and mechanical equipment.
The Carbon Border Adjustment Mechanism (CBAM) affects this supply chain through its current framework for covered basic materials, while the European Commission’s proposed downstream measures for 2028, where relevant, could extend its reach to additional manufactured goods. For construction companies, the implications extend beyond customs declarations to material purchasing, project budgets, contractual responsibilities and capital expenditure.
The sector’s exposure is particularly high because covered materials pass through distributors and engineering, procurement and construction (EPC) contractors before being incorporated into site work packages and completed infrastructure. Even where a finished product is not directly listed under the applicable rules, its cost and emissions profile can be influenced by the carbon exposure of intermediate materials and components.
Material costs and procurement decisions
Historical unit rates may not fully reflect future carbon-sensitive material costs. At the same time, project specifications established early in the development process can restrict procurement choices, potentially committing contractors to higher-emission suppliers before materials are ordered.
Suppliers able to substantiate lower emissions may be better positioned to protect margins or retain market share. Conversely, where emissions information is missing or unreliable, EU customers may apply conservative assumptions when assessing the associated cost and regulatory exposure.
Managing these risks requires emissions-data and verification requirements to be incorporated into tender specifications. Project teams also need to preserve alternative sourcing options and connect material records with bills of quantities, ensuring that the materials purchased can be reconciled with those specified and installed.
Coordination between customs, procurement, production, finance and assurance functions is essential. Consistent records help prevent the same product or material from being represented differently across internal systems, supplier documentation and compliance processes.
Evidence requirements extend across construction work packages
A project’s assurance file needs to retain supplier data at installation level, delivered quantities, product certificates, allocations to individual work packages and controlled documentation throughout construction. These records should be maintained continuously rather than assembled only when requested by an EU customer or verifier.
Traceability is particularly important where materials move through several commercial and construction stages before installation. The evidence must connect the relevant supplier and production installation with the material delivered and its allocation to the project, providing a consistent basis for verification and commercial discussions.
The proposed downstream extension adds another planning consideration. The Commission’s proposal is relevant to industrial supply chains because most of the 180 proposed product groups are supply-chain products rather than household items. This does not mean every construction product or infrastructure component will automatically enter CBAM scope. Product classification and the applicable regulatory provisions remain decisive.
Construction companies therefore need to distinguish obligations under the current framework from potential requirements under the proposed 2028 measures. Product-level classification, supplier evidence and material records can help identify where regulatory coverage may affect procurement planning.
Long project timelines complicate carbon-cost allocation
Construction and infrastructure projects often establish designs and budgets years before materials are purchased. This creates a timing gap between project commitments and changes in carbon-related requirements, making early sensitivity analysis relevant to procurement and financial planning.
For investors and lenders, the assessment should examine contingency provisions, regulatory-change clauses and the allocation of carbon costs under fixed-price EPC contracts. A contract may appear to transfer a risk without necessarily resolving whether the cost will ultimately be borne by the contractor, passed to the customer or disputed through a later claim.
The analysis also needs to consider the 2030s, as the CBAM and EU Emissions Trading System (ETS) framework phases in over time. Changes to the regulatory and carbon-cost environment can affect the economics of long-lived industrial assets and infrastructure projects.
Contractual provisions shape financial exposure
Purchase and sales agreements should define requirements for emissions-data delivery, verification status, supplier changes, carbon-cost pass-through and remedies where evidence is late or unusable. These provisions matter when historical unit rates fail to account for future carbon-sensitive costs and fixed project specifications limit the scope for changing suppliers.
Without clear contractual arrangements, the party holding the legal CBAM obligation may inherit costs generated several tiers upstream, with limited ability to recover them. The allocation of responsibility for data, verification and additional costs therefore needs to be addressed across the supply chain.
For construction businesses, carbon management is consequently linked to procurement and capital-expenditure planning. Early consideration of emissions can inform material selection, tender conditions, financing contingencies and the allocation of contractual risk. Lower-emission materials are commercially useful where their performance can also be substantiated through evidence suitable for the relevant regulated transaction.
