Western Balkan electricity exporters face a carbon-accounting challenge as power crosses multiple grids before reaching EU buyers. EU mirror statistics recorded 9.84 TWh of gross electricity imports reported from Serbia in 2025, but border figures alone do not establish where that electricity was generated or the emissions associated with it.
Hungary, Romania, Bulgaria and Croatia were the leading destinations for the reported imports. Serbia’s border totals can include domestic production, bilateral purchases, transit flows and re-exported power, making them an unreliable measure of electricity generated by Serbian installations.
Power from Montenegro, Bosnia and Herzegovina, North Macedonia or Albania can enter wholesale positions and cross-border schedules involving Serbia before delivery to an EU market. The physical flow, the contractual seller and customs origin are distinct; treating all electricity imported from Serbia as Serbian-generated would misrepresent the region’s carbon burden.
CBAM evidence and exposure
In a June 2026 assessment, Serbia’s Ministry of Finance estimated electricity-related exposure of around 21.8 million euros for 2026 using its original baseline. The ministry warned that regulatory uncertainty may already be affecting cross-border trade, making unchanged 2025 volumes a weak assumption for future liabilities.
The ministry examined possible rule changes that could reduce the modeled electricity effect, but said they had not been adopted at the time of its assessment. The effect of compliance on electricity-trade volumes will depend on market conditions.
Electricity is outside the 50-tonne physical-goods exemption under the EU Carbon Border Adjustment Mechanism (CBAM) and is fully exposed from the beginning of the definitive regime, subject to detailed accounting rules and specific exemptions. The EU allows verified actual-emissions approaches only under demanding conditions involving direct electricity sourcing, contractual and physical matching, and network access.
A portfolio combining hydro, wind, solar, coal and imported power may need a reconciled evidence chain to support an installation-specific emissions claim under CBAM. Renewable guarantees of origin serve a separate market function and are not an automatic substitute for the mechanism’s required evidence.
Trading costs and export records
A trader buying lower-cost electricity outside the EU for sale into Hungary or Romania must weigh more than exchange prices. Border congestion, transmission costs, balancing obligations, carbon certificates and the credit needed to hold positions can eliminate positive trading spreads, particularly when EU solar or wind output lowers domestic electricity prices.
Regional renewable developers can build export opportunities around verifiable evidence rather than a generic green claim. Installation-level metering, clear asset ownership, power-purchase contracts, hourly schedules, identification of the EU importer and controlled allocation of environmental attributes can reduce disputes.
The same records may help bank lenders assess long-term contracted revenue, although the legal route to recognition of actual emissions requires case-specific confirmation. The central regional policy question is whether a particular megawatt-hour can be lawfully linked to a particular installation and importing declarant, rather than relying only on a country’s average carbon intensity. Serbia’s position as both a producer and a transit market makes that distinction central to electricity exports from the Western Balkans.
Elevated by CBAM.Clarion Engineer