The Carbon Border Adjustment Mechanism (CBAM) is increasingly influencing the dynamics of Southeast Europe’s electricity market, extending its reach beyond traditional industrial sectors. Initially perceived as a regulatory measure focused on industries such as steel and cement, CBAM is now recognized as a transformative factor reshaping electricity trading patterns, cross-border power exchanges, and the investment landscape for renewable energy across the region.
As of 2026, the effects of CBAM are becoming more pronounced. The interplay between electricity trading in EU and non-EU Balkan countries is evolving; it is no longer solely dictated by price differentials or fuel costs but increasingly by carbon intensity metrics. This shift is altering the economic viability of lignite generation and renewable energy exports, while also impacting regional balancing infrastructure and interconnection strategies.
Recent data from the Energy Community indicates a significant decline in commercial electricity exchanges between the EU and the Western Balkans, with a drop of approximately 25% in Q1 2026. This downturn suggests that traditional pricing mechanisms are insufficient to maintain previous trading volumes, as carbon-related costs and structural market adjustments take precedence in determining competitiveness.
Historically, the electricity trade in Southeast Europe was heavily influenced by generation cost structures. Countries like Serbia and Bosnia and Herzegovina relied on lignite-based electricity exports when domestic production costs were favorable. Romania utilized a mix of nuclear, hydro, and thermal generation, while Greece depended on gas prices linked to LNG. Albania and Montenegro capitalized on hydropower during periods of high water flow.
However, with the introduction of CBAM, this established framework is undergoing significant changes. As Europe integrates carbon costs into its industrial and electricity markets, the competitiveness of carbon-intensive generation diminishes compared to systems with higher renewable energy shares. Consequently, imports from high-emission sources are encountering increased commercial barriers due to policy shifts, buyer preferences, environmental, social, and governance (ESG) considerations, and evolving financing conditions.
This transition poses particular challenges for Western Balkan nations where reliance on lignite remains substantial. For instance, Serbia’s electricity system heavily depends on lignite from EPS thermal plants, while Bosnia and Herzegovina continues to utilize coal extensively. Kosovo has one of Europe’s most carbon-intensive electricity mixes. These countries previously enjoyed competitive domestic production costs relative to gas-dominated EU markets; however, under carbon-adjusted conditions, this advantage is diminishing.
The underlying issue extends beyond regulatory frameworks to encompass pricing structures that favor renewable-heavy systems. Increasingly favorable weather conditions lead to lower marginal production costs for renewables. For example, solar oversupply in Greece or Bulgaria can suppress daytime prices significantly. Additionally, wind generation in Romania and Serbia is starting to influence regional balancing flows more prominently. As renewable energy penetration increases, opportunities for carbon-intensive baseload exports are shrinking.
CBAM amplifies these trends by making carbon intensity a visible economic factor within broader EU trade frameworks. This development creates a structural divide in Southeast European electricity markets: countries that can effectively integrate renewable energy sources with robust balancing infrastructure stand to gain strategic advantages while those reliant on lignite face heightened risks associated with declining competitiveness and financing challenges.
Romania appears well-positioned in this evolving landscape thanks to its diverse energy mix that includes nuclear baseload power and flexible hydropower resources alongside expanding renewables. Future developments such as Black Sea offshore wind projects may further enhance its capacity for low-carbon exports to neighboring regions.
Conversely, Greece’s rapid expansion of solar energy combined with LNG-supported balancing capabilities positions it as a lower-carbon market within the Balkans. Despite facing challenges related to market volatility, Greece’s trajectory aligns closely with Europe’s overarching decarbonization objectives.
Serbia’s situation is more complex due to its ongoing reliance on lignite generation despite possessing favorable transmission geography and emerging renewable projects. Approximately 4.54 GWh of planned battery storage linked to EMS agreements indicates progress toward enhancing flexibility within its grid system. However, Serbia’s dependence on lignite continues to significantly impact its overall carbon intensity.
The Trans-Balkan Corridor emerges as a critical asset in this context; initially conceived as a modernization initiative for regional transmission networks, it is evolving into a key component of a future low-carbon balancing architecture connecting Serbia with Montenegro and Bosnia and Herzegovina.
Interconnections are now vital not only for facilitating electricity movement but also for establishing competitive carbon positions within the market. A system rich in renewables with strong transmission capabilities can export low-carbon electricity effectively into higher-value markets; conversely, those reliant on carbon-heavy generation without adequate balancing capacity may find themselves constrained despite their potential output.
Hydropower resources are gaining strategic significance under these new market conditions. Countries like Albania and Montenegro benefit from their reservoir systems which provide dispatchable low-carbon flexibility. In an environment shaped by CBAM-related pressures, hydropower assets are becoming increasingly valuable not just for their generation capacity but also for their role in supporting balanced operations and efficient dispatching.
Montenegro’s submarine cable linking it directly to Italy enhances this dynamic further by integrating its hydro and wind resources into EU demand channels capable of supporting low-carbon balancing flows—transforming Montenegro into an integral part of a broader Adriatic renewable corridor rather than remaining isolated within the Balkan market.
The evolution towards battery storage systems intersects significantly with these market changes as well. Storage facilities are essential for absorbing excess renewable production while stabilizing intermittent generation patterns—improving the reliability of low-carbon electricity flows during volatile periods. As trading becomes more sensitive to carbon metrics, flexibility infrastructure will become increasingly valuable for maintaining renewable energy value amidst fluctuating market conditions.
This trend explains why integrated portfolios combining renewables with storage solutions are attracting investment across Southeast European markets.
The demand from industrial sectors further reinforces these shifts; manufacturers in Serbia, Romania, and Greece are actively pursuing renewable-backed electricity contracts to mitigate their carbon exposure within European supply chains. Industries such as automotive components and metal production face mounting pressure to demonstrate reduced embedded emissions—a factor that increasingly influences their competitive standing.
Consequently, sourcing electricity from renewable sources becomes integral to broader strategies adapting to CBAM regulations—a cycle that perpetuates itself as industrial decarbonization drives up demand for renewables while increasing volatility necessitates enhanced storage solutions.
The regional electricity market is gradually restructuring itself around principles of low-carbon flexibility rather than merely focusing on baseload generation volume—a shift with significant geopolitical implications.
Europe’s energy transition is increasingly intertwined with industrial strategy and national autonomy considerations. Low-carbon systems capable of supporting industrial decarbonization are gaining both economic significance and political weight while carbon-heavy systems risk marginalization unless they adapt swiftly.
This scenario places considerable pressure on utilities and policymakers across the Western Balkans as they navigate an uncertain future for coal-heavy generation fleets amid expanding carbon-adjusted market frameworks which could lead to rising financing costs and narrowing export opportunities—making renewable integration not just environmentally favorable but economically essential.
Despite these pressures, the transition remains uneven across the region; many Southeast European markets still rely heavily on lignite for stability and affordability while essential infrastructure for renewable balancing remains underdeveloped compared to Western Europe. Political resistance against transitioning away from coal persists in several nations.
This suggests that while the effects of CBAM will likely unfold gradually rather than through abrupt disruptions in the market structure, the direction toward a more carbon-sensitive trading environment is becoming increasingly clear—reshaping how electricity trading operates throughout Southeast Europe moving forward.
