CBAM and electricity: How carbon pricing is redrawing Balkan power flows

Europe’s [[PRRS_LINK_1]] is beginning to transform South-East Europe’s electricity market in ways that only a few years ago seemed politically and commercially improbable. For decades, electricity trading across the Balkans was shaped primarily by generation costs, hydrology, fuel prices and transmission availability. Coal-heavy systems in Serbia, Bosnia and Herzegovina or Bulgaria frequently exported competitively priced electricity into neighboring markets, while hydropower-rich countries such as Albania and Montenegro leveraged seasonal surpluses during favorable hydrological periods.

By 2026, however, carbon intensity is becoming just as important as generation cost itself.

The introduction of CBAM into electricity trading is gradually redrawing the geography of Balkan power flows. The mechanism is changing which countries export competitively into EU markets, how utilities evaluate renewable investments and why industrial consumers increasingly seek low-carbon electricity contracts. It is also accelerating a much broader restructuring of regional electricity economics where carbon exposure, balancing flexibility and renewable integration increasingly determine long-term competitiveness.

The shift is already visible in market data.

During the first quarter of 2026, commercial electricity exchanges between the European Union and the Western Balkans contracted sharply. Total scheduled cross-border flows between the EU and the WB6 fell by approximately 25% year-on-year. Electricity exports from EU markets into the Western Balkans dropped by more than 40%, while flows from the Western Balkans into neighboring EU systems also declined.  

At first glance, the trend appears counterintuitive. Wholesale electricity prices across parts of the Western Balkans remained significantly below neighboring EU markets during the same period. In a purely price-driven system, lower-cost Balkan electricity would typically flow aggressively toward higher-priced European markets.

Instead, carbon-related costs increasingly distorted those traditional trading patterns.

The explanation lies in how CBAM changes electricity market incentives. Under the mechanism, imported electricity generated from carbon-intensive systems effectively faces a growing carbon cost adjustment when entering EU markets. In practical terms, this means that coal-heavy electricity from parts of the Western Balkans becomes progressively less competitive relative to low-carbon generation inside the European Union.

This is particularly significant for South-East Europe because several Balkan electricity systems still depend heavily on lignite generation.

Serbia illustrates the challenge clearly.

The country remains one of the largest electricity producers in the Western Balkans, historically relying on lignite-fired generation from EPS-operated thermal complexes such as Nikola Tesla and Kostolac. These assets provided relatively low-cost baseload electricity for decades and frequently supported regional exports during periods of favorable market conditions.

Yet under a carbon-sensitive electricity framework, Serbia’s generation mix creates increasing commercial friction.

Even as the country accelerates renewable deployment through wind and solar projects, lignite generation still strongly influences overall system carbon intensity. Electricity exported from Serbia toward EU markets therefore carries growing embedded carbon exposure, particularly during periods when thermal generation supports balancing or renewable deficits.

This changes the economics of cross-border trading fundamentally.

Historically, Balkan electricity markets operated largely around marginal generation costs. If Serbian coal generation remained cheaper than neighboring alternatives, exports flowed toward higher-priced markets. CBAM increasingly introduces an additional layer where carbon intensity itself affects competitiveness.

The consequence is that some of the Balkans’ historic export advantages are beginning to erode.

Bosnia and Herzegovina faces similar pressures. The country historically benefited from a combination of hydropower and lignite generation, allowing utilities to export electricity into regional markets at competitive prices. Yet under tightening European carbon frameworks, coal-backed electricity exports become progressively less attractive despite relatively low production costs.

The impact extends beyond utilities themselves.

Industrial companies across South-East Europe increasingly recognize that electricity sourcing now affects broader export competitiveness into EU markets. Manufacturers producing steel, chemicals, automotive components or industrial goods are beginning to pay closer attention to the carbon intensity of their electricity supply because embedded emissions increasingly influence relationships with European buyers and financiers.

This creates growing demand for renewable-backed industrial electricity contracts.

In effect, CBAM is turning electricity itself into a strategic industrial input rather than simply an operational cost.

Albania stands out as one of the clearest beneficiaries of this transition.

The country’s electricity system remains overwhelmingly dependent on hydropower, giving Albania one of Europe’s lowest-carbon generation mixes. During the first quarter of 2026, strong hydrological conditions significantly increased hydroelectric output, strengthening Albania’s export positioning precisely when carbon-sensitive electricity trading became more important.  

This creates a structural competitive advantage.

While coal-heavy systems face increasing friction exporting into EU markets, Albania’s hydro-backed electricity effectively benefits from a carbon premium. Low-carbon generation not only avoids CBAM-related penalties but increasingly commands strategic value within regional balancing and industrial decarbonization frameworks.

Montenegro occupies a more nuanced position.

The country combines hydropower assets with growing wind generation but still operates inside a wider regional electricity environment heavily influenced by neighboring thermal systems. Future renewable expansion and transmission integration could strengthen Montenegro’s position as a low-carbon balancing exporter, particularly if Adriatic wind development accelerates alongside interconnection upgrades toward Italy, Bosnia and Serbia.

Romania presents a different model entirely.

Unlike much of the Western Balkans, Romania combines nuclear baseload generation, hydropower and growing renewable capacity. This diversified low-carbon structure increasingly strengthens Romania’s strategic position inside South-East Europe’s evolving electricity market.

As CBAM-related pressures intensify, Romania may emerge as one of the region’s most competitive low-carbon electricity exporters, particularly once future offshore wind development in the Black Sea begins scaling toward commercial operation.

The wider implication is that South-East Europe’s electricity map is gradually being reorganized according to carbon intensity.

This transition creates new investment hierarchies.

For years, renewable investment across the Balkans focused primarily on subsidy mechanisms, irradiation levels, wind resources and grid access. Today, developers increasingly recognize that renewable projects also carry strategic value because they reduce overall system carbon exposure.

A wind farm in Serbia no longer represents merely an additional renewable asset. It effectively functions as a mechanism for lowering the carbon intensity of the national electricity mix and improving long-term export competitiveness.

The same applies to solar development across the region.

Yet renewable expansion alone does not fully solve the problem because intermittent generation requires balancing support. Coal-heavy systems forced to ramp thermal plants during periods of low wind or solar output still face elevated carbon exposure.

This is why flexibility infrastructure is becoming increasingly important inside the CBAM-driven electricity transition.

Battery storage, hydropower balancing and transmission interconnections all play central roles because they allow renewable-heavy systems to operate with lower dependence on thermal backup generation. The more effectively South-East Europe can balance intermittent renewables through low-carbon flexibility, the lower overall system carbon intensity becomes.

Transmission infrastructure is particularly important in this context.

The Trans-Balkan Corridor and wider regional interconnection upgrades effectively allow low-carbon electricity to move more efficiently across the region. Hydropower from Albania or Montenegro can increasingly stabilize renewable-heavy systems elsewhere. Romanian nuclear output may support balancing during low-wind periods. Cross-border integration therefore directly reduces dependence on carbon-intensive balancing generation.  

This creates a powerful incentive for deeper regional electricity integration.

Historically, Balkan electricity systems operated relatively independently despite cross-border trading. CBAM increasingly encourages a more interconnected low-carbon balancing architecture because isolated coal-heavy systems become progressively less competitive over time.

The geopolitical implications are substantial.

Europe’s broader energy transition increasingly intersects with industrial policy and strategic autonomy. Electricity imports from neighboring regions are no longer evaluated solely on price and security grounds but also on carbon compatibility with EU climate objectives.

For the Western Balkans, this creates both opportunity and risk.

Countries capable of accelerating renewable deployment, grid modernization and low-carbon balancing may strengthen their integration with EU electricity markets significantly. Those remaining heavily dependent on lignite generation risk gradual marginalization as carbon pricing pressure intensifies.

This dynamic could reshape regional investment flows.

International investors increasingly evaluate South-East European energy markets through the lens of long-term carbon competitiveness. Renewable-heavy systems with strong balancing capability and low carbon intensity attract stronger institutional interest than markets exposed to prolonged thermal dependence and regulatory uncertainty.

Corporate PPAs reinforce this trend further.

Industrial consumers across Serbia, Romania and Greece increasingly seek renewable-backed electricity contracts not only for price stability but also for ESG positioning and carbon compliance. Automotive suppliers linked to European supply chains, metals producers exporting into EU markets and industrial manufacturers exposed to sustainability reporting frameworks are all becoming important drivers of renewable demand.

In effect, CBAM is gradually linking electricity markets with industrial decarbonization strategy.

This creates entirely new commercial relationships inside the regional energy market. Utilities capable of supplying low-carbon electricity gain strategic advantages beyond wholesale trading. Renewable projects increasingly benefit from industrial offtake demand. Transmission corridors enabling low-carbon balancing become more valuable.

At the same time, legacy thermal assets face growing pressure.

Lignite generation still provides essential system stability across parts of the Balkans, particularly during periods of low renewable output or hydrological stress. Yet the long-term economics of coal generation become progressively more difficult under expanding carbon pricing frameworks.

This creates a delicate transition challenge for governments across the region.

Rapid coal phase-outs risk undermining system stability and industrial competitiveness if renewable and balancing infrastructure are not developed quickly enough. Yet delayed transition increases exposure to carbon-related market penalties and export disadvantages.

The solution increasingly lies in integrated infrastructure development.

Renewable generation alone is insufficient. South-East Europe also requires large-scale storage deployment, transmission reinforcement, advanced balancing markets and flexible low-carbon capacity capable of stabilizing increasingly renewable-heavy systems.

The countries moving fastest in this direction are likely to strengthen their long-term regional market positions.

Still, the transition remains uneven. Regulatory fragmentation persists across the Balkans. Carbon pricing structures remain inconsistent. Market integration continues evolving gradually rather than uniformly. Financing requirements for grid modernization and storage infrastructure are enormous.

Nevertheless, the direction of travel is increasingly unmistakable.

CBAM is not simply an environmental policy instrument. It is becoming a structural force reshaping South-East Europe’s electricity economy. Carbon intensity increasingly determines trading competitiveness, industrial attractiveness and long-term infrastructure value.

The Balkan electricity market is therefore entering a new era where low-carbon flexibility, renewable integration and transmission connectivity matter as much as generation cost itself.

In that environment, the future winners are unlikely to be the countries merely producing the cheapest electricity. Increasingly, strategic advantage belongs to those capable of producing electricity compatible with Europe’s evolving carbon-constrained economy.

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