Serbia’s renewable electricity producers can continue selling power into the European Union under the EU Carbon Border Adjustment Mechanism, but access to favourable carbon treatment will increasingly depend on whether exporters can prove the origin of each delivered megawatt-hour.
The commercial opportunity remains substantial. Serbia occupies the central position in the Western Balkan electricity system, with connections towards Hungary, Romania, Bulgaria, North Macedonia, Kosovo, Montenegro, and Bosnia and Herzegovina. Its liquid domestic market, growing renewable portfolio and direct border with Hungary make it the region’s most important potential platform for renewable electricity exports into the EU.
CBAM, however, separates the physical value of Serbian renewable generation from its regulatory treatment at the EU border. Unless an importer can satisfy the conditions for using actual embedded emissions, Serbian electricity is exposed to a national default factor of 1.041 tonnes of CO₂ per MWh.
At the Q2 2026 CBAM certificate price of €75.28 per tonne, that factor implies an indicative liability of approximately €78.37/MWh. The charge reflects Serbia’s coal-intensive national generation mix rather than the emissions of an individual wind, solar or hydropower plant.
That distinction is decisive for renewable exporters. A Serbian wind farm may generate electricity with minimal operating emissions, but its EU buyer could still face the national default charge if the contractual, metering and cross-border evidence is insufficient to establish actual emissions.
The financial exposure is larger than the price spreads available on many trading routes. During the second quarter of 2026, Hungarian day-ahead electricity averaged approximately €13/MWh above Serbia. A potential CBAM charge of more than €78/MWh would overwhelm that margin and make a conventional export commercially unviable.
Yet scheduled electricity exports from Serbia to Hungary increased 111% year on year in Q2 2026. Part of that growth reflected stronger demand linked to Ukraine and the increasing use of Hungary as a northern trading hub. It also showed that CBAM has not stopped electricity trading. Instead, it has changed the calculation behind each transaction, including its route, origin, contractual structure and expected carbon exposure.
Serbia’s renewable base is expanding. Combined wind and solar capacity increased from 647 MW to 908 MW during the year to September 2025, according to government data. Solar capacity more than doubled from 137 MW to approximately 300 MW, while wind remained the larger of the two technologies.
Elektroprivreda Srbije has also added renewable capacity at its Kostolac mining and power complex. The 66 MW Kostolac wind farm, built across the Drmno, Petka, Ćirikovac and Klenovnik sites, was designed to produce approximately 187 GWh annually. The project was supported by a €110 million KfW loan and an additional €30 million EU grant through the Western Balkans Investment Framework.
The nearby 9.75 MW Petka solar power plant has projected annual production of approximately 13.7 GWh. Both projects use former mining or industrial land, giving EPS an opportunity to add renewable production inside a generation portfolio still dominated by lignite and large hydropower.
Private wind projects, solar developments and auction-supported capacity are broadening the market beyond EPS. Serbia’s challenge is no longer solely to build new renewable plants. It must establish a trading and verification architecture that allows their electricity to retain its low-carbon identity after entering the wholesale market.
This is particularly important because Serbia’s lignite generation continues to shape its default CBAM treatment. Coal-fired production fell 12% year on year to 6.54 TWh in Q2 2026, but lignite remained the principal source of domestic power. Until the generation mix changes substantially or the EU revises the methodology, an exporter unable to prove actual emissions will remain exposed to a default value reflecting the wider system.
Proposed amendments to the CBAM Regulation could improve Serbia’s position. The European Commission has proposed calculating electricity defaults using the entire national generation mix, including hydropower, wind and solar, rather than concentrating predominantly on fossil-fuel generation. That should produce a lower and more representative fallback value for Serbian electricity.
The proposed rules would also remove two major obstacles to the use of actual emissions: the requirement for a direct grid connection to the EU or the absence of congestion along the delivery route. Neither condition reflects the operational reality of interconnected electricity markets, where generators cannot control congestion across multiple borders.
Physical power-purchase agreements conducted through intermediaries could also become eligible, provided a verifiable contractual chain connects the producer, trader and EU importer. Firm nomination requirements would be limited to borders where capacity is allocated explicitly, avoiding an incompatible documentation test for transactions conducted through market coupling.
These amendments remain under negotiation and cannot yet be treated as settled law. Serbian producers and traders should not assume that renewable generation, a guarantee of origin or a corporate PPA will automatically secure zero-emissions treatment.
A guarantee of origin confirms the renewable attribute of electricity, but CBAM requires a broader connection between the generating installation, the volume produced, the contractual transaction and the electricity imported into the EU. The relevant evidence may include hourly production data, calibrated metering records, PPA volumes, trading confirmations, cross-border capacity documentation, delivery schedules and records showing how balancing differences were treated.
Electricity exports and trading can therefore continue largely as business as usual, but they must now be accompanied by CBAM evidence packages covering the electricity source and embedded emissions, according to analysts at Virtu.Energy, a CBAM electricity-focused engineering platform.
The authorised CBAM declarant or EU importer remains formally responsible for the declaration and eventual surrender of CBAM certificates. The importer cannot fulfil that responsibility alone, however. Plant-level production, metering and emissions information sits with the Serbian producer, while contractual and delivery records may be distributed between the producer, exporter, trader and transmission-capacity holder.
This means the declarant will have to share operational compliance requirements with every relevant party in the supply chain. Contracts will need to specify which party prepares the evidence package, who provides access to original records, how inconsistencies are corrected, who pays verification costs and how financial liability is allocated if actual emissions are rejected.
According to Virtu.Energy analysts, integration of a pre-verification process is highly recommended and should begin now. Waiting until the annual declaration is prepared creates the risk that missing hourly data, incomplete contractual records or inconsistencies between generation and delivery can no longer be corrected.
Pre-verification would test whether a proposed export structure is capable of meeting CBAM requirements before or during delivery. It would examine the generating installation, metering arrangements, contractual chain, nomination procedures, transmission route and information available to the EU importer.
The process is particularly important for Serbian electricity sold through several intermediaries. Each transfer can weaken the connection between the renewable generator and the ultimate EU importer unless the documentation is designed to preserve that link.
Multi-border exports create another layer of difficulty. Serbian renewable power may reach the EU directly through Hungary, Romania, Bulgaria or Croatia-related routes, or it may be commercially traded across several regional zones before import. The physical flow recorded by transmission operators may differ from the contractual schedule because electricity follows network conditions rather than the commercial route.
For CBAM purposes, the exporter must be able to demonstrate the qualifying contractual and delivery relationship without claiming that the same renewable production was allocated to multiple buyers. Volume reconciliation and hourly matching will therefore become central controls.
The economics are significant. A 100 MW Serbian wind farm operating at a 35% capacity factor could produce approximately 307 GWh annually. A CBAM-related price discount of only €10/MWh would reduce annual revenue by more than €3 million. Exposure to Serbia’s full default charge would be substantially larger than the operating margin of most renewable projects.
Solar exporters face a different commercial profile. Serbian solar production is concentrated during increasingly competitive midday hours, when regional prices can be low or negative. Storage, shaped PPAs and portfolio aggregation can raise the value of exported solar electricity, but each additional contractual component must remain consistent with the CBAM evidence chain.
Wind generation may have greater export value during winter, evening and lower-solar periods, although its variability increases balancing requirements. Hydropower offers another advantage because reservoir plants can shift production into higher-priced hours and provide balancing services. Each technology consequently needs its own delivery and verification structure rather than a standardised renewable-export model.
Serbia’s domestic market will remain important. Day-ahead volume on SEEPEX increased 7% year on year in Q2 2026, while combined trading across the four observed Western Balkan exchanges rose 19% to 2.70 TWh. Higher domestic liquidity gives renewable producers more options, but electricity sold anonymously into a wholesale pool may be more difficult to connect with a specific EU import transaction.
This creates a premium for export-ready renewable projects with strong metering, auditable production data and contracts designed around CBAM from the outset. Developers able to offer a complete evidence package may secure better PPA terms than projects relying solely on guarantees of origin or general statements about renewable production.
Serbia’s rising exports towards Hungary show that its regional trading role is strengthening. Its renewable producers can participate in that growth, but their competitive position will depend on more than generation cost and cross-border capacity. The decisive asset will increasingly be a verifiable chain connecting the Serbian plant with the electricity declared at the EU border.
The power can continue to move as before. The evidence now has to move with it.