Aggregators and electricity traders may support CBAM-compliant renewable electricity exports from the Western Balkans when the contractual chain preserves a verifiable connection between the generating facility, intermediaries and the authorised EU CBAM declarant. Cross-border renewable PPAs are frequently not set up as single-plant arrangements with one buyer. In these cases, traders and aggregators can pool output from multiple wind, solar and hydropower assets.
Pooling generation can also help manage imbalances and deliver a shaped electricity product to industrial consumers or utilities. The approach is designed to improve portfolio efficiency while limiting the effect of production volatility from individual generators. This structure can be used even when the underlying pool consists entirely of renewable generation.
CBAM rules narrow evidence for intermediary structures
Existing CBAM requirements have complicated the use of intermediary structures. Where an intermediary is involved, contractual evidence has been interpreted narrowly. This interpretation can restrict portfolio optimisation even if all generation in the pool is renewable.
A proposed amendment would allow intermediary structures if a verifiable contractual relationship links the producer, every intermediary in the chain and the authorised CBAM declarant. The Energy Community Secretariat described the change as positive, citing eligibility for using actual embedded emission values. It could also enable aggregators to manage positions across EU and Energy Community markets.
Portfolio aggregation across Western Balkan generation types
The amendment could be particularly relevant for Western Balkan renewable projects where standalone supply to a large EU industrial buyer is difficult. Individual wind, solar or hydropower plants are often too small, geographically dispersed or operationally variable for direct contracts. An aggregator could combine wind projects in Serbia, hydropower assets in Montenegro or Albania, and solar installations in North Macedonia into a single portfolio.
Beyond aggregation, intermediaries can handle cross-border transmission capacity and intraday adjustments. They can also manage balancing exposure and settlement differences. These functions become more important as physical generation profiles, contractual schedules and actual cross-border electricity flows diverge.
Compliance depends on plant-level traceability and hourly evidence
Compliance requirements remain demanding under the proposed approach. The contractual chain must identify generating installations, eligible electricity volumes, metering points, nomination procedures and how production shortfalls are treated. Portfolio management systems must prevent double counting and distinguish qualifying renewable electricity from replacement power bought on the market.
Hourly data and plant-level traceability are required for evidence at delivery-period level. Monthly aggregate certificates are unlikely to be sufficient to show that a particular imported electricity volume originated from a qualifying renewable installation during the relevant period. Traders and aggregators would therefore need systems covering plant-level metering, nomination records, settlement data and auditable allocation methodologies.
Intermediary role extends to project finance and longer-term PPAs
The intermediary model can also support project finance functions for aggregators. By diversifying generation across multiple assets, aggregators can reduce production volatility. This can support longer-term PPAs and increase confidence among large offtakers.
The structure may improve bankability for smaller renewable projects that may struggle to secure direct cross-border agreements independently. CBAM is unlikely to remove the role of electricity traders and aggregators; instead it changes how they operate within a verifiable evidence chain. Intermediaries increasingly act as both portfolio managers and operators of documentation linking renewable generation with EU electricity imports.
Traders capable of combining market optimisation, cross-border portfolio management and verifier-ready traceability could position themselves between Western Balkan renewable projects and growing EU industrial electricity demand.
