Electricity exporters and trading companies across Serbia, Montenegro, Bosnia and Herzegovina, North Macedonia and Albania are facing increased pressure to show 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.
While formal CBAM declaration and certificate duties rest with the authorised EU importer, the economic effects are expected to extend 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 incur CBAM costs based on country default emission factors if actual emissions cannot be demonstrated under EU rules. The distinction matters for wind, solar and hydropower producers seeking access to higher-priced EU electricity markets.
Cross-border power flows shift amid CBAM-linked costs
The impact of CBAM-linked verification is showing up in cross-border electricity exchanges. The Energy Community Secretariat reports that commercially scheduled exchanges between Energy Community countries and EU member states fell by 25% in the first quarter of 2026.
The same assessment says average day-ahead prices in non-EU markets were about €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 subsequent assessment attributed part of the outcome to practical difficulties for renewable producers in meeting conditions needed to demonstrate actual embedded emissions. For traders, this changes how cross-border arbitrage works because CBAM costs and qualification probabilities must be incorporated into trading decisions.
Traditional factors used for cross-border scheduling—wholesale price differentials, transmission capacity, losses, balancing exposure and counterparty risk—now also need to reflect CBAM costs. Export margins can be reduced when an EU buyer applies default emissions values even if the electricity comes from a renewable installation.
Evidence requirements for claiming actual emissions treatment
Electricity exporters aiming to support EU customers’ use of actual emissions must provide more than conventional energy certificates or proof of generation. Accredited verifiers are expected to check whether the generating installation, physical electricity purchase agreement, transmission evidence and cross-border nominations meet applicable CBAM requirements.
Under the current framework, electricity claiming 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 meet requirements intended to show there is no physical network congestion between the installation and that system.
The fossil-origin emissions associated with the 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. For Montenegro, electricity supplied to Italy through a submarine interconnector would need qualifying contractual and physical delivery evidence if the importer intends to claim actual emissions.
The arrangements described cannot be replaced simply by Guarantees of Origin. This affects how exporters package documentation when selling into EU markets under CBAM rules.
Traceability obligations for trading portfolios and allocations
For electricity trading companies, traceability at the level of individual installations and contractual deliveries is becoming more important. A trader buying from multiple generators and combining supply within a portfolio may struggle to show which volumes qualify for actual-emissions treatment without appropriate contractual structures and detailed allocation records.
EU verification rules require operators of generating installations to prepare a declarant-specific addendum to their emissions report. The addendum must identify the relevant authorised CBAM declarant and specify qualifying electricity quantities.
This requirement adds complexity for trading businesses serving multiple EU counterparties. Companies are expected to maintain systems that reconcile generation, contracted deliveries, nominations, import quantities and allocations without double counting.
The commercial response described includes options such as separate verified renewable portfolios, dedicated physical PPAs and additional contractual restrictions on reallocating electricity volumes between buyers.
Evidentiary packages before long-term supply agreements
Regional electricity producers are expected to face requests from EU buyers for evidence packages before signing or renewing long-term supply agreements. The requested materials may include plant identification, emissions-monitoring procedures, generation meter data, physical PPA documentation, accepted cross-border nominations, transmission evidence and records supporting allocation of electricity to individual EU importers.
The accredited verifier is expected to independently assess information provided and identify discrepancies or material deficiencies. Verification is described as an assurance process governed by defined regulatory criteria rather than a guarantee that contracted renewable electricity will automatically qualify for actual-emissions treatment.
The material also distinguishes between technical pre-verification services that help prepare evidence and formal verification performed by an appropriately accredited independent organisation. Exporters and traders are therefore expected to manage documentation processes separately from formal verification steps.
Commercial exposure for utilities, traders and project finance
EPS, EPCG, ERS and EPBiH, as established regional utilities, face additional commercial pressure on their export portfolios under CBAM. Coal-dependent generation is exposed to carbon-adjusted import costs, while renewable and hydropower assets may have a stronger position where 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 to support verified exports. For traders, risk is concentrated in contractual exposure related to whether qualifying emissions evidence can be provided.
The material notes that EU buyers may seek price adjustments, warranties, additional documentation or compensation when qualifying emissions evidence is unavailable. Banks financing renewable projects and electricity trading operations are also expected to assess whether anticipated export revenues depend on CBAM treatment that has not been demonstrated.
The difference between a conventional renewable PPA and a CBAM-verifiable electricity supply agreement could affect project bankability, lending conditions and projected debt-service coverage. This links CBAM documentation requirements directly with financing assumptions used in project evaluation.
Status of CBAM revisions ahead of 2027 reporting
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 involving arrangements with electricity traders. However, proposed changes are not yet final legislation under current circumstances.
The first verification reports covering 2026 imports are expected from January 2027. This timing precedes the first annual CBAM declaration deadline on September 30, 2027.
The transition described for Southeast Europe’s power sector indicates that power prices alone will not determine export competitiveness. Instead, an emerging premium is expected to go toward 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 at all.