BELGRADE, 6 November — Banks financing Serbian wind and solar projects with European Union export ambitions may need to assess cross-border delivery records alongside power prices and generation forecasts. The European Commission issued customs guidance on 6 November clarifying how nominated electricity volumes are used in customs declarations where transmission capacity is explicitly allocated. The guidance makes evidence of delivery and the identification of the EU importer a potential revenue concern for projects selling into the EU.
Default emissions can affect contract economics
The guidance does not change the emissions methodology for imported electricity. It highlights the importance of preserving supporting records, while the central question for lenders is whether a project can realise the electricity price assumed in its financial model.
A Serbian renewable plant may have strong wind or solar resources, an operational grid connection and a signed power purchase agreement (PPA), yet still face uncertainty over the Carbon Border Adjustment Mechanism (CBAM) treatment of electricity delivered to an EU buyer. That uncertainty matters when the PPA’s economics depend on the buyer being able to use verified actual emissions. If a transaction fails the relevant eligibility conditions, the importer may have to use Serbia’s national default factor of 1.041 tCO2/MWh.
Combined with the third-quarter 2026 CBAM certificate price of €82.32 per tonne, that factor implies an indicative unadjusted carbon amount of €85.70/MWh. This is not a fixed charge on every Serbian renewable electricity export. It illustrates the potential difference between a qualifying low-emissions transaction and one assessed using the default factor.
The contract determines which party bears that financial difference. An EU buyer may be responsible for CBAM compliance, while a Serbian generator could face a lower realised electricity price, a disputed warranty or reduced demand if the assumed treatment cannot be substantiated.
Lenders test the evidence chain
Lenders should distinguish ordinary electricity offtake from agreements whose prices incorporate an expected CBAM advantage. Such a PPA needs provisions for data access, metering, nomination records, verifier cooperation and responsibility if evidence is missing or a claim is rejected.
Technical due diligence should check whether settlement meters and SCADA systems can produce complete hourly records, whether generation can be allocated to specific contractual volumes, and whether the relevant cross-border nominations can be obtained from the parties that control them. Legal and commercial reviews should identify the transmission-capacity holder, nomination submitter and authorised EU CBAM declarant.
Those reviews should also test whether a PPA remains bankable if an intermediary changes or the buyer can no longer use actual emissions. Lenders can model a downside case using a lower export price or an alternative domestic route to market, without assuming the full CBAM-related premium. Carbon prices, transmission costs, balancing exposure and the availability of eligible import arrangements should be stress-tested together.
Not every Serbian renewable project faces this issue: domestic sales and exports that do not rely on plant-specific CBAM treatment carry different risks. Additional diligence matters most where EU-linked revenues support debt service or a higher project valuation. For those projects, CBAM readiness is part of revenue due diligence, and the bankable asset includes both the generating plant and a reliable contractual and data chain connecting its output to the EU buyer.