The energy landscape in Southeast Europe is undergoing significant transformation as the European Union’s Carbon Border Adjustment Mechanism (CBAM) influences market dynamics. In Serbia, a country where coal still predominates in the electricity mix, there is growing discourse among energy traders and policymakers about the feasibility of importing thermal electricity from neighboring coal-dependent nations while simultaneously exporting renewable energy to EU markets.
This dual approach may seem paradoxical at first glance, but it aligns with modern electricity market operations. Electricity, once injected into the grid, becomes indistinguishable from other sources; however, the environmental attributes associated with its generation can be decoupled from the physical flow. Mechanisms such as Guarantees of Origin facilitate this separation, allowing countries to import fossil fuel-generated electricity while exporting renewable energy or its certificates to markets that value decarbonized power.
Serbia’s strategic geographic position in Southeast Europe places it at the crossroads of high-carbon and low-carbon electricity systems. The nation’s transmission infrastructure connects it to several countries, including Hungary, Romania, Bulgaria, Bosnia and Herzegovina, Montenegro, and North Macedonia, forming a crucial part of the regional electricity exchange network.
Historically, Serbia has fluctuated between being a net importer and exporter of electricity based on hydrological conditions and the performance of its lignite fleet. Currently, Serbia’s power system comprises approximately 4.4 GW of lignite capacity, 3 GW of hydropower, and around 0.6 GW of wind capacity, with solar developments rapidly advancing. While coal continues to dominate baseload generation, the share of renewables is gradually increasing as new projects come online.
Neighboring countries like Bosnia and Herzegovina maintain substantial coal generation capabilities. Bosnia operates several large lignite plants such as Tuzla and Kakanj, making it one of Europe’s most coal-reliant electricity systems. Due to relatively low domestic demand compared to generation capacity, Bosnia has historically been a net exporter of electricity to Serbia and Croatia.
Bulgaria also possesses significant lignite generation capacity within the Maritsa East basin, where major power stations like Maritsa East 2 contribute to both domestic supply and exports. The interconnected nature of Serbia’s transmission system allows for flexible electricity flows based on market conditions.
In a future shaped by CBAM and corporate decarbonization efforts, Serbia could feasibly import baseload electricity from coal plants in Bosnia or Bulgaria while exporting renewable energy to EU markets eager for certified green power. This economic model emphasizes profitability rather than ideological considerations; EU markets increasingly reward renewable energy accompanied by valid Guarantees of Origin.
Serbia may leverage imported thermal electricity to meet domestic demand during peak periods while exporting surplus renewable generation from its wind farms and solar installations to neighboring EU markets such as Hungary or Romania. This strategy hinges on the ability to separate physical flows from certification systems effectively.
However, implementing this dual model presents challenges. Transmission capacity is a primary concern; Serbia’s existing infrastructure may not support simultaneous imports and exports without congestion or curtailment issues. Moreover, domestic grid constraints necessitate upgrades to accommodate new renewable generation nodes that are emerging outside traditional production areas.
Balancing supply and demand remains critical as well. The variability inherent in wind and solar generation requires robust flexibility resources—such as hydropower reservoirs or battery storage—to manage fluctuations effectively. If Serbia imports baseload electricity while exporting renewables, maintaining grid stability will be essential.
Price dynamics will also play a crucial role in determining the viability of these trade patterns. Sustained price differentials between Central European and Southeast European markets can create lucrative arbitrage opportunities for Serbian energy traders. However, fluctuations in fuel prices or regional supply-demand balances may impact these opportunities significantly.
The availability of renewable certificates adds another layer of complexity. To export green power successfully, corresponding certificates must verify the origin of that electricity. Domestic industrial consumers may compete for these certificates under CBAM regulations, potentially limiting their availability for export purposes.
This situation underscores a strategic choice for Serbian energy policy: whether to prioritize domestic industrial competitiveness through local consumption or maximize revenue through cross-border trading. As Serbia expands its renewable capacity, it may adopt a hybrid approach that supports both objectives simultaneously.
Advancements in battery storage technology could further enhance this dual strategy by enabling more flexible management of excess renewable generation during low-demand periods. Such systems can mitigate curtailment risks and improve overall economic returns from renewable investments.
Over time, Serbia could evolve into a pivotal balancing hub within regional electricity markets—mediating flows between coal-dominated Balkan systems and increasingly decarbonized EU markets. The country’s geographic advantages and interconnection capabilities position it well to capitalize on both domestic production and cross-border trading opportunities.
The success of this model will ultimately depend on investments in infrastructure, effective market design, and clear policy frameworks that ensure transparency in certification processes for renewable exports. As Serbia navigates this evolving landscape, its strategic decisions will significantly influence its role within Europe’s integrated energy framework.
