Serbian electricity exported to the European Union is carrying an indicative Carbon Border Adjustment Mechanism cost of about €78.37/MWh when the national default emission factor is applied. The figure is based on a default factor of 1.041 tonnes of CO₂ per MWh and a second-quarter CBAM certificate price of €75.28 per tonne. The resulting charge is described as large relative to historical price spreads that previously supported cross-border sales.
CBAM default calculation and comparison with regional prices
The calculation implies a cost level that can exceed differences seen between Serbian and neighbouring EU market prices. In the second quarter, the average Hungarian price was about €13/MWh higher than Serbia’s, which is far below the implied default CBAM cost. This gap indicates that the CBAM default value can change the economics of cross-border trading compared with earlier spreads.
The indicative cost does not mean every commercial flow from Serbia automatically incurs the full amount at the point of sale. Importers settle CBAM obligations through the EU compliance system, while contractual responsibility for the cost can be allocated among the producer, trader and authorised declarant. The default value instead sets an economic exposure level when parties cannot demonstrate installation-specific emissions under EU rules.
Actual-emissions route and evidence requirements
Renewable producers can seek actual-emissions treatment, which can reduce embedded emissions towards zero. However, doing so requires more than demonstrating that electricity originated from a wind, solar or hydro installation. Under EU requirements, an evidence chain must support each claimed megawatt-hour.
The EU evidence chain includes a qualifying physical PPA, hourly production data, cross-border capacity nominations, transit-country documentation, allocated imported quantities and independent verification. Each claimed megawatt-hour must be traceable to the authorised CBAM declarant using it in the EU declaration.
Guarantees of Origin and limits for physical delivery claims
Serbia’s operational Guarantees of Origin registry can support renewable sourcing and help prevent double counting. Even so, Guarantees of Origin are not described as a substitute for physical-delivery evidence under the CBAM framework. A producer selling a GoO separately from the power may have no basis for claiming that associated electricity was delivered to a specific EU declarant.
The exposure also extends beyond direct electricity exports into downstream industrial supply chains. Serbian suppliers serving manufacturers exporting steel, aluminium, fertilisers or other carbon-intensive goods to the EU may face requests for credible electricity emissions data from buyers and verifiers.
Commercial impact between undifferentiated and verified renewable supplies
The immediate commercial divide is likely to be between generators selling undifferentiated Serbian electricity under the national default factor and installations able to deliver a controlled, verified renewable package. With a €78/MWh default-level exposure, the default route is described as potentially decisive for whether an export trade remains viable at all.
