Carbon pricing under the EU’s Carbon Border Adjustment Mechanism is beginning to alter how electricity moves across Southeast Europe, with traders increasingly expected to account for differences in carbon intensity when planning cross-border flows. In this emerging picture, electricity markets in the region may start to behave less like a single integrated trading space and more like overlapping regional pools with different carbon-related incentives. The shift matters for compliance planning and contracting strategies for importers and exporters linked to EU demand, as well as for EU producers operating under emissions regulation.
Carbon pricing changes the logic of cross-border electricity
As carbon border costs start to influence cross-border electricity flows, a new trading pattern is being discussed in which electricity with different carbon intensities circulates within distinct regional markets. Under this approach, Serbia could act as both an importer and an exporter depending on the generation source’s carbon profile. The core implication is that electricity is no longer priced only by generation costs and system needs across borders.
Instead, carbon intensity becomes a decisive factor in whether electricity can access EU markets at competitive terms. This introduces a structural reconfiguration of flows: rather than exporting coal-generated power directly toward the EU, Serbia could reserve low-carbon output for EU delivery while sourcing higher-emitting electricity from neighboring systems during specific periods. For market participants, that means contracting and scheduling decisions may increasingly reflect carbon-related market access rather than only short-term dispatch economics.
Serbia’s role: balancing imports with low-carbon exports
In the scenario under discussion, coal-based electricity produced within Serbia may increasingly remain within the Western Balkans region where carbon border costs do not yet apply. At the same time, Serbia could export low-carbon electricity—primarily hydropower and renewable generation—to EU markets where carbon intensity shapes market access. This would allow Serbia to align its export mix with the carbon-related expectations of EU buyers.
When domestic demand exceeds Serbia’s available low-carbon generation capacity, imports could fill the gap. Those imports would be paired with continued exports of renewable electricity to the EU, effectively separating higher- and lower-carbon volumes by destination. The result is a model in which Serbia’s position in regional power trade depends on day-to-day system balance and the carbon characteristics of available supply.
Bosnia and Herzegovina and Bulgaria become key counterparties
Two neighboring systems are highlighted as particularly important to this emerging structure: Bosnia and Herzegovina and Bulgaria. Bosnia and Herzegovina operates lignite-fired power plants and has historically exported electricity across the region. Bulgaria also maintains significant coal-fired generation capacity alongside nuclear and renewable assets.
During periods when Serbia needs additional supply beyond its low-carbon output, imports from these coal-heavy systems could be used to meet demand while renewable electricity continues to be exported to the EU. From a commercial perspective, such arrangements have been likened to a form of carbon arbitrage, where traders import coal-based electricity at relatively low prices from neighboring markets while exporting higher-value renewable electricity that benefits from low-carbon characteristics in EU-linked trading.
Infrastructure and coordination determine whether the model can work
The feasibility of this kind of cross-border reconfiguration depends on operational conditions rather than policy intent alone. Transmission capacity between Serbia and neighboring countries must be sufficient to support large electricity flows in both directions when required by system balance. Cross-border market integration and transmission system operator coordination are also described as necessary to manage these trading patterns reliably.
The Western Balkans grid is already highly interconnected, with major transmission corridors linking Serbia with Bosnia and Herzegovina, Bulgaria, Romania, Hungary, and North Macedonia. These interconnections enable electricity to flow across the region depending on price signals and system needs, creating the physical basis for carbon-influenced routing decisions. However, adding carbon border costs changes how those price signals translate into export competitiveness toward EU markets.
Implications for decarbonisation pathways across covered sectors
The described market transformation is also expected to affect investment incentives for low-carbon generation across Southeast Europe. Countries that expand low-carbon capacity could gain access to premium electricity markets within the EU as carbon intensity becomes more central to market entry conditions. At the same time, coal-heavy systems may find themselves increasingly confined to regional markets where carbon costs are lower or absent.
Looking ahead, the dynamic could produce a two-tier structure for electricity trading across Southeast Europe: one tier dominated by low-carbon electricity integrated with EU-linked markets, and another tier where coal-based generation remains central within regional trade. For policymakers and industry stakeholders—particularly those active in CBAM-relevant value chains such as cement, steel, aluminium, fertilisers, electricity, and hydrogen—the key compliance takeaway is that upstream energy sourcing choices can become more tightly connected to EU market access conditions under emissions regulation frameworks.
Analytical synthesis
The emerging discussion centers on how CBAM-linked carbon pricing can reshape dispatch-linked trade patterns by making carbon intensity a determinant of whether electricity reaches EU buyers competitively. In this framework, Serbia’s export strategy would increasingly separate low-carbon hydropower and renewables for EU delivery from coal-based supply that may stay within regional markets. Whether this evolves into sustained practice will depend on transmission capability, cross-border integration, and coordinated operation across interconnected Western Balkans corridors involving Bosnia and Herzegovina and Bulgaria.