Serbian electricity exported to the European Union carries an indicative Carbon Border Adjustment Mechanism cost of about €78.37/MWh when the national default emission factor is used, threatening to erase the price advantage that previously supported cross-border sales.
The calculation is based on Serbia’s default factor of 1.041 tonnes of CO₂ per MWh and the second-quarter CBAM certificate price of €75.28 per tonne.
The resulting charge is significantly larger than many historical price spreads between Serbia and neighbouring EU markets. In the second quarter, the average Hungarian price was about €13/MWh higher than Serbia’s, far below the implied default CBAM cost.
This does not mean that every commercial flow from Serbia immediately incurs the full amount. Importers will settle their CBAM obligations through the EU compliance system, while contractual responsibility for the cost can be distributed between the producer, trader and authorised declarant.
But the default value establishes the economic exposure when the parties cannot demonstrate installation-specific emissions under the EU rules.
Renewable producers can seek actual-emissions treatment, potentially reducing the embedded emissions towards zero. Doing so requires more than showing that the electricity came from a wind, solar or hydro installation.
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.
Serbia’s operational Guarantees of Origin registry can support renewable sourcing and prevent double counting, but certificates are not a substitute for physical-delivery evidence. A producer selling a GoO separately from the power may have no basis for claiming that the associated electricity was delivered to a particular EU declarant.
The exposure also extends beyond direct exports. Serbian suppliers serving manufacturers that export steel, aluminium, fertilisers or other carbon-intensive goods to the EU will increasingly face requests for credible electricity emissions data from buyers and verifiers.
The immediate commercial divide is likely to be between generators selling undifferentiated Serbian electricity under the national default factor and installations capable of delivering a controlled, verified renewable package.
At €78/MWh, the default route is not merely a reporting disadvantage. It can determine whether an export trade is viable at all.