European infrastructure projects face carbon-related cost exposure before construction begins. Steel, cement and aluminium are specified, procured and incorporated into long-lived assets, including roads, railways, bridges, tunnels, substations, transmission lines and large buildings. Procurement programmes for these materials can extend over several years.
The Carbon Border Adjustment Mechanism (CBAM) adds a carbon dimension to material sourcing and project cost planning. The current CBAM framework applies to covered goods. The European Commission has proposed downstream measures for 2028, which could extend the mechanism’s reach into additional manufactured products where relevant.
Carbon exposure before procurement decisions are final
Exposure is high to very high for capital-intensive projects because material decisions made during feasibility studies and tender preparation may occur years before purchasing. Carbon characteristics of inputs and the quality of emissions evidence can affect project economics before an asset enters operation. This timing can influence how budgets are set and how suppliers are selected.
Long procurement cycles complicate cost forecasting across project stages. Infrastructure projects move from feasibility estimates and EPC tenders to material procurement, construction and long-term operation. At each stage, information about a material’s producing installation and embedded emissions can become separated from the product itself.
Traceability requirements in procurement documentation
Traceability becomes part of procurement and commercial documentation as projects progress. Budgets prepared years in advance can become outdated when carbon-related costs or the scope of downstream regulation change faster than conventional inflation assumptions. Project teams need to distinguish direct CBAM certificate liabilities from indirect costs passed through by upstream suppliers.
Companies can face material price exposure even when they are not authorised CBAM declarants. A timing mismatch also affects how teams respond to later cost changes. Procurement specifications may lock in particular materials or suppliers before the final purchase, while contractual commitments can limit flexibility.
Project controls separating carbon risks from commodity risks
Project cost models should incorporate carbon scenarios alongside commodity-price escalation. Regulatory-change risks should be assigned explicitly in contracts rather than handled as a separate sustainability process. These controls can be integrated into enterprise resource planning (ERP), production, procurement and quality systems.
Maintaining an evidence chain requires keeping product codes, supplier identities, production batches and material flows connected. Supplier emissions data must be reconciled with quantity records, procurement packages and installed-asset registers. This is intended to substantiate project-specific embodied carbon.
Evidence quality affecting costs and assumptions
Verified actual emissions values may support a lower carbon-adjusted cost where documentation is complete. Incomplete documentation can lead to conservative assumptions or default values instead. This can transfer additional costs to the EU buyer if evidence is insufficient.
Financing models need to account for carbon-sensitive CAPEX alongside other cost drivers. Lenders and investors are expected to test how higher material costs, sponsor contingency and procurement delays could affect project financing. This is particularly relevant where fixed-price contracts provide limited relief from regulatory changes.
Impacts on financing metrics and EPC contract allocation
Debt sizing and credit analysis should consider the possibility that additional costs emerge after budgets and contracts have been established. Carbon exposure should be translated into potential effects on EBITDA, working capital and capital expenditure (CAPEX). Customer-retention scenarios may also be relevant depending on the project context.
The same considerations apply to EPC risk allocation through contract terms and lender contingency provisions. These provisions can affect whether a carbon-related cost becomes a contractual claim, a margin reduction or a manageable project expense. Contract structures therefore influence how carbon-related costs flow through project accounts.
Contract clauses on emissions data delivery and cost recovery
Purchase and sales agreements should specify requirements for emissions-data delivery and verification status. Contracts should also address supplier changes, carbon-cost pass-through and remedies where evidence is late or unusable. These clauses are particularly important when project budgets have been fixed well before materials are ordered.
The scope of regulatory rules or carbon-related costs may change during the interim period between budget setting and ordering. Without clear clauses, the party carrying the legal CBAM obligation can inherit costs generated several tiers upstream with limited ability to recover them. Contracts therefore need to align data responsibilities and cost allocation with supply-chain structure.
Downstream CBAM extension relevance for infrastructure supply chains
The Commission’s proposed downstream extension is relevant to infrastructure-related 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 fall within CBAM scope. Product classification remains essential for assessing potential exposure under current rules versus proposed measures.
Infrastructure investors already model steel, cement and power costs in their assessments. Under CBAM, those assessments also need to account for the carbon characteristics of inputs and the evidence available to substantiate them. Carbon performance is becoming an additional specification alongside quality, cost and delivery in procurement of long-lived assets.