Electricity exporters and trading companies across Serbia, Montenegro, Bosnia and Herzegovina, North Macedonia and Albania are facing increased pressure to document the carbon characteristics and physical delivery of electricity sold into the European Union. The Carbon Border Adjustment Mechanism (CBAM) is introducing new costs, verification obligations and commercial risks into regional power trading. For utilities, independent renewable generators and electricity traders, the ability to supply independently verifiable low-carbon electricity is becoming a competitive factor.
While formal CBAM declaration and certificate obligations fall primarily on the authorised EU importer, the economic impact extends through the supply chain. EU counterparties are expected to pass part of the carbon cost and documentation requirements to non-EU suppliers via electricity purchase prices, trading agreements and contractual guarantees. A key commercial risk is that electricity marketed as renewable may still face CBAM costs based on country default emission factors if actual emissions cannot be demonstrated under EU rules.
CBAM-linked costs alter cross-border power flows
The effect is already visible in cross-border electricity exchanges. The Energy Community Secretariat reports that commercially scheduled exchanges across borders between Energy Community countries and EU member states declined by 25% in the first quarter of 2026. Over the same period, average day-ahead prices in non-EU markets were approximately €30/MWh lower than in neighbouring EU markets.
Despite favourable hydropower conditions, lower wholesale prices did not lead to export volumes that would typically be expected from those spreads. The Secretariat’s assessment also found practical difficulties for renewable producers in meeting conditions required to demonstrate actual embedded emissions. For traders, this changes cross-border arbitrage by shifting how volumes qualify for treatment under CBAM rules.
Trading decisions that previously relied on wholesale price differentials, transmission capacity, losses, balancing exposure and counterparty risk now need to incorporate CBAM costs. Market participants also have to account for the likelihood that individual electricity volumes will qualify for actual-emissions treatment rather than default values. Export margins may shrink or disappear when an EU buyer applies default emissions even if the electricity originates from a renewable installation.
EU verifiers require physical delivery evidence for actual emissions
Electricity exporters seeking to support EU customers’ use of actual emissions must provide more than conventional energy certificates or proof of generation. Accredited verifiers are set to check whether the generating installation, physical electricity purchase agreement, transmission evidence and cross-border nominations meet applicable CBAM requirements. Under the current framework, claims for actual emissions must be covered by a qualifying physical PPA linked to the authorised EU CBAM declarant.
The generating installation must either be directly connected to the EU transmission system or satisfy requirements showing no physical network congestion between the installation and the EU transmission system. Fossil-origin emissions associated with the relevant approach must not exceed 550 grams of CO₂ per kilowatt-hour. Electricity generation and accepted cross-border nominations also need reconciliation within periods not exceeding one hour, including relevant transit systems.
For example, a Serbian wind producer selling via a trading intermediary into Hungary may require coordination among the generator, trader, transmission system operators and the EU importing entity. In another case, Montenegrin electricity supplied to Italy through a submarine interconnector needs qualifying contractual and physical delivery evidence if the importer wants to claim actual emissions. These arrangements cannot be replaced simply by Guarantees of Origin.
Traceability and allocation records become central for traders
For electricity trading companies, traceability at individual installation and contractual-delivery level is becoming more important. When a trader purchases electricity from multiple generators and combines supplies within a commercial portfolio, it may be difficult to show which volumes qualify for actual-emissions treatment without suitable contractual structures and detailed allocation records. EU verification rules also require generating installation operators to prepare a declarant-specific addendum to emissions reports.
The addendum must identify the relevant authorised CBAM declarant and specify qualifying electricity quantities. This requirement increases complexity for trading businesses dealing with multiple EU counterparties. Companies are expected to use systems that reconcile generation, contracted deliveries, nominations, import quantities and allocations while avoiding double counting.
The commercial response described in the market includes separate verified renewable portfolios, dedicated physical PPAs and additional contractual restrictions on reallocating electricity volumes between buyers. Exporters are also expected to prepare evidence packages ahead of signing or renewing long-term supply agreements with EU buyers. Those packages may include plant identification, emissions-monitoring procedures, generation meter data, physical PPA documentation and accepted cross-border nominations.
Independent verification processes shape contract risk
The evidence packages can also include transmission evidence and records supporting allocation of electricity to individual EU importers. Accredited verifiers assess submitted information independently and identify discrepancies or material deficiencies as part of their review process. Verification does not guarantee that contracted renewable electricity will automatically qualify for actual-emissions treatment because it operates under defined regulatory criteria.
Exporters and traders are therefore expected to distinguish between technical pre-verification services used to prepare evidence and formal verification carried out by an appropriately accredited independent organisation. For established regional utilities including EPS, EPCG, ERS and EPBiH, CBAM adds commercial pressure on export portfolios. Coal-dependent generation faces exposure to carbon-adjusted import costs, while renewable and hydropower assets may have stronger positioning when their electricity can satisfy actual-emissions verification requirements.
Independent generators face a different challenge: projects may have low operating emissions but still lack contracting arrangements, transmission documentation or hourly data needed for verified exports. For traders, risk is concentrated in contractual exposure because EU buyers may request price adjustments, warranties, additional documentation or compensation when qualifying emissions evidence is unavailable. Banks financing renewable projects and electricity trading operations increasingly need to assess whether expected export revenues depend on CBAM treatment that has not been demonstrated.
Regulatory timeline for 2026 imports approaches 2027 reporting
The European Parliament’s September 2026 position on CBAM revisions could simplify certain contractual and physical-delivery requirements related to arrangements involving electricity traders. However proposed changes are not yet final legislation, leaving exporters exposed to current requirements. The first verification reports covering 2026 imports are expected from January 2027, ahead of the first annual CBAM declaration deadline on September 30, 2027.
The transition is described as changing how competitiveness is determined in Southeast Europe’s electricity sector because power prices alone no longer determine export outcomes into the EU market. The premium increasingly depends on generators and traders able to deliver electricity supported by credible emissions data, qualifying contracts and independently verified cross-border supply records. For regional exporters, the commercial question becomes whether verified carbon characteristics allow an EU buyer to purchase at a competitive final cost rather than whether electricity can be sold into the EU.
