Electricity exporters and trading companies across Southeast Europe are facing growing pressure to demonstrate the carbon characteristics and physical delivery of electricity supplied to the European Union as the Carbon Border Adjustment Mechanism (CBAM) introduces additional costs, verification requirements and commercial risks into regional power trading.
For utilities, independent renewable generators and electricity traders operating in Serbia, Montenegro, Bosnia and Herzegovina, North Macedonia and Albania, the ability to deliver low-carbon electricity supported by independently verifiable evidence is becoming an increasingly important competitive advantage.
Although formal CBAM declaration and certificate obligations primarily rest with the authorised EU importer, the economic impact extends across the supply chain. EU counterparties are expected to pass some carbon costs and documentation requirements on to non-EU suppliers through electricity purchase prices, trading agreements and contractual guarantees.
The central commercial risk is that electricity marketed as renewable may still incur CBAM costs based on country-specific default emission factors if actual emissions cannot be demonstrated in accordance with EU rules.
This distinction is particularly significant for wind, solar and hydropower producers seeking access to higher-priced EU electricity markets.
The impact is already becoming visible in cross-border trading patterns. According to the Energy Community Secretariat, commercially scheduled electricity exchanges across borders between Energy Community contracting parties and EU member states fell by 25% in the first quarter of 2026, while average day-ahead electricity prices in non-EU markets were approximately €30/MWh lower than in neighbouring EU markets.
Despite favourable hydropower conditions, lower wholesale prices did not translate into the export volumes that would normally be expected from such price differentials. The Secretariat’s subsequent assessment found that renewable electricity producers were encountering practical difficulties in meeting the requirements for demonstrating actual embedded emissions.
For traders, this represents a fundamental shift in cross-border arbitrage. Trading strategies that traditionally focused on wholesale price spreads, transmission capacity, network losses, balancing exposure and counterparty risk must now also account for CBAM costs and the likelihood that individual electricity volumes will qualify for actual-emissions treatment.
Export margins can disappear when an EU buyer applies default emissions values, even when the electricity originates from a renewable installation.
Electricity exporters seeking to help their EU customers apply actual emissions must provide more than conventional energy certificates or evidence of renewable generation. Accredited verifiers will assess whether the generating installation, physical electricity purchase agreement, transmission records and cross-border nominations satisfy the applicable CBAM requirements.
Under the current framework, electricity claiming actual emissions must be covered by a qualifying physical power purchase agreement (PPA) linked to the authorised EU CBAM declarant. The generating installation must be directly connected to the EU transmission system or meet the applicable conditions for demonstrating the absence of physical network congestion between the installation and the EU transmission system.
Fossil-origin emissions from the installation must not exceed 550 grams of CO₂ per kilowatt-hour. Generation data and accepted cross-border nominations must also be reconciled over periods of no more than one hour, including relevant transit systems.
For a Serbian wind producer selling electricity through a trading intermediary into Hungary, compliance may require close coordination among the generator, trader, transmission system operators and EU importing entity. Similarly, electricity supplied from Montenegro to Italy through the submarine interconnector must be supported by qualifying contractual and physical-delivery evidence if the importer intends to claim actual emissions.
Guarantees of Origin alone cannot replace these requirements.
For electricity trading companies, the growing importance of traceability at the individual installation and contractual-delivery level is one of the most significant changes introduced by CBAM. Traders purchasing electricity from multiple generators and combining it within a commercial portfolio may struggle to identify which volumes qualify for actual-emissions treatment unless their contracts and allocation records provide sufficient detail.
EU verification rules require generating-installation operators to prepare a declarant-specific addendum to their emissions reports, identifying the relevant authorised CBAM declarant and the qualifying electricity volumes. This adds complexity for trading companies supplying multiple EU counterparties.
Market participants will need systems that can reconcile generation, contracted deliveries, nominations, import quantities and allocations while preventing double counting. Potential responses include separate verified renewable portfolios, dedicated physical PPAs and tighter contractual restrictions on reallocating electricity volumes between buyers.
Regional producers should expect EU buyers to request supporting evidence before signing or renewing long-term electricity supply agreements. Documentation may include generating-plant identification, emissions-monitoring procedures, generation meter data, physical PPA records, accepted cross-border nominations, transmission evidence and records demonstrating how electricity volumes are allocated to individual EU importers.
An accredited verifier will independently assess the submitted information and identify discrepancies or material deficiencies. Verification does not automatically guarantee that contracted renewable electricity will qualify for actual-emissions treatment. Eligibility remains subject to the applicable regulatory criteria.
Exporters and traders should therefore distinguish between technical pre-verification services, which help prepare and organise evidence, and formal verification performed by an appropriately accredited independent organisation.
For established regional utilities such as EPS, EPCG, ERS and EPBiH, CBAM creates additional commercial pressure on electricity export portfolios. Coal-dependent generation faces greater exposure to carbon-adjusted import costs, while renewable and hydropower assets may be better positioned to compete when their electricity meets the requirements for actual-emissions verification.
Independent generators face a different challenge. Although their projects may have low operating emissions, they may lack the contractual arrangements, transmission documentation or hourly data needed to support verified exports.
For traders, the main exposure lies in contractual obligations. EU buyers may demand price adjustments, warranties, additional documentation or compensation if the required emissions evidence cannot be provided. Banks financing renewable projects and electricity trading operations must also assess whether projected export revenues depend on CBAM treatment that has not yet been demonstrated.
The distinction between a conventional renewable PPA and a CBAM-verifiable electricity supply agreement could increasingly affect project bankability, lending conditions and projected debt-service coverage.
Potential changes to EU rules could ease some of these constraints. The European Parliament’s September 2026 position on CBAM revisions could make actual-emissions treatment more accessible by simplifying certain contractual and physical-delivery requirements, including arrangements involving electricity traders. However, the proposed changes have not yet become final legislation, meaning exporters remain subject to the requirements currently in force.
The first verification reports covering 2026 imports are expected from January 2027, ahead of the first annual CBAM declaration deadline on September 30, 2027.
For Southeast Europe’s electricity sector, the transition is creating a market in which wholesale prices alone no longer determine export competitiveness. Increasingly, the strongest position will belong to generators and traders able to supply electricity backed by credible emissions data, qualifying contracts and independently verified cross-border delivery records.
For regional exporters, the commercial question is no longer simply whether electricity can be sold into the EU, but whether its verified carbon characteristics allow the buyer to secure that electricity at a competitive final cost.
