Serbia’s renewable-energy financing market is moving from focusing mainly on electricity output volumes toward assessing how exported electricity can back a verifiable, premium-bearing transaction in the European Union, as carbon-related compliance rules reshape cross-border power sales.
The shift is becoming more relevant for banks, project sponsors and investors as the European Union’s Carbon Border Adjustment Mechanism (CBAM) moves into its definitive phase on January 1, 2026. The mechanism does not cover electricity imports under its 50-tonne de minimis exemption. EU importers seeking to apply installation-specific actual emissions rather than the applicable default methodology must submit the required electricity-specific evidence.
For Serbian renewable projects, this means the premium attached to low-carbon electricity exports may be more conditional than the headline power purchase agreement (PPA) price would suggest. In turn, lenders are being pushed to separate base contracted revenue from income that depends on meeting CBAM evidence requirements.
Separating contracted income from CBAM-linked upside
Financing assessments are placing greater weight on core electricity revenue versus additional income tied to regulatory compliance and supporting evidence. A bankable base case should show that a project can meet debt service through contracted electricity revenue and realistic merchant-market assumptions, without assuming that every exported renewable megawatt-hour will automatically receive the intended CBAM treatment.
Any extra premium should be treated as upside only once the project has proved that contractual arrangements, physical delivery of electricity, nominations, network evidence, installation data, and independent verification processes are operationally workable. This allows lenders to evaluate underlying credit strength without depending on revenue streams that remain conditional.
The need for this approach is rising as Serbia’s renewable pipeline expands. The country’s second renewable-energy auction round awarded support to 10 wind and solar projects with a combined capacity of 645 MW, corresponding to planned investment of approximately EUR 782 million.
In March 2026, the Ministry of Mining and Energy reported that more than 1 GW of battery storage capacity was in development and had been registered with transmission system operator EMS.
Revenue risk and the cost of capital
Alongside compliance evidence, the cost of capital adds pressure to financing models. The National Bank of Serbia kept its key policy rate at 5.75% on October 8, leaving it unchanged since September 2024. While the policy rate does not directly set project-finance pricing, it underlines the need for lenders to scrutinise revenue streams that rely on regulatory requirements and evidentiary processes that have not been consistently demonstrated in routine operation.
For wind and solar projects, a major stress point is the gap between annual electricity generation and the volume eligible for the intended treatment on an hourly basis. A plant can meet its annual P50 generation forecast while still failing to deliver the equivalent value during individual settlement periods. This may occur if renewable output is supplemented by market purchases, nominations are not accepted, or the EU importer cannot complete the evidence chain.
As a result, a fixed-shape or baseload PPA may generate commercially firm electricity revenue even when the installation-specific low-carbon component stays variable. Contracted delivery and the ability to substantiate the required emissions treatment are separate risks and should be modelled accordingly.
Scenario testing for CBAM-conditioned revenue
Banks are expected to test at least four scenarios when evaluating Serbian renewable projects that could face uncertainty around CBAM-related revenue.
Expected generation and expected evidence performance, reflecting the project’s base operating assumptions.
Lower generation and increased replacement purchases, assessing the impact of weaker renewable output and additional electricity procurement.
Partial evidence failure, analysing the financial effects if some exported volumes cannot qualify for the intended treatment.
Full fallback to the applicable default methodology, assessing exposure if installation-specific actual emissions cannot be substantiated.
The aim is not to forecast which scenario will occur, but to determine who bears financial consequences under each outcome and how quickly those costs can flow into project cash flow. That makes scrutiny of PPA provisions, liability caps, replacement-power obligations, and carbon-related indemnities particularly important.
A carbon indemnity can create a substantial financing risk when it exposes the project company to liabilities that exceed the premium it receives. Lenders should assess whether contractual protections are proportionate to the additional revenue and whether the project has sufficient financial capacity to absorb potential claims without affecting debt service.
Technical due diligence focused on the evidence chain
Technical due diligence also needs to go beyond generation equipment and grid connection. A commissioned wind or solar plant does not automatically function as a bankable compliance-data system.
Lenders’ technical advisers should review revenue-metering equipment, calibration procedures, supervisory control and data acquisition (SCADA) interfaces, data-export rights, time stamps, cybersecurity controls, and the process for monthly reconciliation. EPC and operations and maintenance (O&M) contracts should also ensure these functions remain operational and supported after handover.
Legal and operational due diligence should confirm whether the EU offtaker, intermediary and importer or declarant will remain the same legal entities throughout the debt tenor. Lenders should also verify that access to the relevant operational and compliance data will persist following contract termination, counterparty changes or insolvency, to the extent needed to support the transaction’s intended treatment.
Without these protections, a project could continue generating and exporting electricity while losing the ability to substantiate the premium-bearing portion of its revenue.
Three layers of renewable-energy revenue
The emerging financing framework creates a clearer hierarchy of renewable-energy income. Base electricity revenue remains the primary layer, supported by contracted power sales and realistic merchant assumptions.
Guarantees of Origin (GoOs) and other environmental attributes form a second, legally distinct layer, subject to the applicable contractual and regulatory framework. A CBAM-related premium for electricity imports is a third layer that should remain conditional until the transaction repeatedly demonstrates it can support the emissions treatment.
Separating these income streams helps lenders distinguish the project’s core cash-generating ability from additional value linked to environmental attributes and carbon-related compliance. It also helps prevent a conditional premium from being treated as guaranteed income when calculating debt-service capacity.
Evidence-ready projects and financing terms
For Serbia’s project-finance market, the development does not necessarily make electricity export PPAs less attractive. Instead, it raises the importance of structuring export revenue transparently and proving that evidence requirements can be met in practice.
The projects most likely to obtain more favourable financing terms are those that can demonstrate not only strong wind resources, solar irradiation and reliable grid access, but also a controlled, auditable process connecting plant-level metering data to relevant EU import records.
As Serbia’s renewable-energy market matures, the definition of a bankable asset is expanding. The value of a renewable project will depend not only on the electricity it generates, but also on its ability to document, verify and substantiate the characteristics of the electricity it exports. In the next phase of Serbian renewables development, the bankable asset will be the power plant together with its evidence chain, rather than the plant alone.
Supported by CBAM.Clarion.Engineer