Türkiye’s role as a major manufacturing partner for the European Union places its steel and aluminium supply chains at the centre of CBAM-related commercial pressure. Domestic mills and smelters supply processors and original equipment manufacturers (OEMs), whose machinery, household appliances, vehicles and components enter EU markets.
This integration makes Türkiye a significant test case for the EU’s Carbon Border Adjustment Mechanism (CBAM), connecting the mechanism’s current coverage of basic materials with the potential implications of proposed downstream measures for 2028. Legal coverage and economic exposure are not the same: manufacturers outside the six original CBAM sectors can still face pressure through carbon-intensive inputs, electricity costs, customer requirements and financing conditions.
Emissions evidence must follow materials through manufacturing
The supply chain runs from Turkish steel mills and aluminium smelters through domestic processors and OEMs to EU importers and industrial customers. As materials are transformed, blended or allocated between products, emissions information must remain traceable if it is to support the carbon value assigned to a finished component or an import declaration.
This creates a need for controlled chain-of-custody systems across production and trade. Records must connect upstream material origins and emissions with processing activities and the quantities ultimately delivered to European customers. The challenge becomes more complex as the number of products, installations and suppliers grows into the hundreds or thousands.
Turkish producers also face commercial decisions over how to respond to carbon-related costs: absorb them, pass them on to customers or invest in decarbonisation. At the same time, EU scrutiny of selective allocation of cleaner production to export markets makes it important that emissions claims are supported by consistent, verifiable records.
These requirements can alter supplier rankings. A product with the lowest factory-gate price may not have the lowest carbon-adjusted landed cost for an EU customer once its emissions profile and associated costs are considered.
Industrial upgrades must combine efficiency with verified data
Manufacturers can address exposure through improvements in electric-arc furnace (EAF) efficiency, recycling, renewable electricity procurement and plant-level emissions monitoring, reporting and verification (MRV). Downstream manufacturers also need supplier carbon clauses that establish how emissions information is provided and maintained across the value chain.
Mapping products, installations and supplier relationships early can reduce the need to reconstruct data retrospectively. The objective is to connect material and energy records with specific production outputs and EU-bound shipments, rather than relying on general corporate emissions figures that cannot be reconciled with individual products.
Verification readiness depends on meter data, production routes, material flows, precursor emissions, product allocation and verified calculations tied to output destined for the EU. The closer the link between source records and reported values, the more confidently companies can use actual emissions information in negotiations with customers.
A reliable evidence system also helps distinguish physical decarbonisation from improvements in reporting. Cleaner production can reduce actual emissions, while stronger measurement and verification can substantiate the results; both are relevant, but they are not interchangeable.
Financing depends on export exposure and transition costs
For lenders and investors, the assessment of Turkish industrial companies should consider concentration of revenue from EU customers, the development of domestic carbon pricing, access to renewable electricity, retrofit capital expenditure and the extent to which customer contracts reward lower emissions.
Transition plans need to distinguish between investments that reduce physical emissions, spending that improves emissions-data quality and measures primarily intended to preserve market access. This separation helps financial institutions assess the purpose and expected impact of each investment instead of treating all carbon-related expenditure as equivalent.
Companies with significant EU sales may face different commercial consequences depending on their ability to pass through costs, secure cleaner energy and demonstrate their production performance. Where contracts do not adequately allocate carbon-related costs or documentation responsibilities, manufacturers and importers may be left exposed to costs arising elsewhere in the supply chain.
EU importers transmit CBAM requirements to Turkish suppliers
For non-EU exporters, the formal obligation to surrender CBAM certificates generally rests with the EU importer. Commercial pressure nevertheless travels upstream, as European buyers have an incentive to favour suppliers that can provide verified actual emissions values and reliable supporting documentation.
That makes CBAM readiness relevant to Turkish manufacturers even when they do not maintain an EU certificate account themselves. Their position in European supply chains can depend on the carbon profile of the goods they supply and their ability to substantiate it in a form usable by customers and importers.
Contracts should therefore define responsibilities for emissions-data delivery, verification status, supplier changes, carbon-cost pass-through and remedies when evidence is late or unusable. These provisions are important where the party carrying the formal import obligation has limited control over production decisions or material sourcing several tiers upstream.
Without clear contractual arrangements, EU importers may face costs associated with emissions information or production choices made by suppliers further along the chain, with limited ability to recover those costs. For Turkish producers, clear allocation of responsibilities can also determine whether decarbonisation investments and verified lower emissions translate into commercial value.
Türkiye’s extensive manufacturing links with the EU make the relationship between carbon performance, production costs and data quality particularly consequential. As CBAM requirements shape purchasing and compliance decisions, steel and aluminium suppliers will be assessed not only on price, quality and delivery, but also on their ability to document emissions across increasingly complex manufacturing chains.
