Serbia has shown that large-scale wind farms can be built, financed and connected to the grid. The inauguration of Čibuk 2 in September 2026 added 154 MW beside the existing 158 MW Čibuk 1, forming a 312 MW wind complex in South Banat. As more turbines enter the electricity market, the focus is shifting from project development to managing their output.
Čibuk 1 and Čibuk 2 represent more than €500 million in investment. Serbia’s wider renewable auction programme has also attracted substantial investment: the EBRD says the first two competitive auctions allocated nearly 1,300 MW of wind and solar projects, including the Pupin and Čibuk 2 wind farms. Early Serbian wind developments had to clear permitting, financing and grid-connection barriers; operational market exposure is increasingly important for the next generation.
Forecasting and balancing costs
Wind output must be forecast before delivery, and the balancing responsible party bears the difference between nominated and actual positions under the applicable market rules. EMS reports a 2026 average upward balancing-energy price of €154.174/MWh for specified risk and settlement calculations, compared with €136.523/MWh in 2025, according to EMS data. That figure is not the automatic imbalance cost for every wind farm, but it indicates the potential economic significance of forecasting deviations.
A project can produce exactly the annual MWh assumed in its financing case and still face substantial balancing costs if its hourly output repeatedly differs from its nominated schedule. Net cash flow can therefore fall short even when annual generation meets expectations. Forecasting is consequently a commercial function, supported by weather prediction, turbine-level production models, real-time SCADA data and intraday trading capability.
A trader that moves the contracted position closer to actual output before gate closure is likely to reduce residual imbalance exposure. Combining renewable assets in a portfolio can also reduce forecast error when their deviations offset one another, but the benefit depends on physical correlation. Wind farms in the same meteorological region may deviate in the same direction at the same time, making Serbia’s concentration of significant capacity in Vojvodina particularly relevant.
Contract allocation and settlement
Balancing responsibility needs to be clear in each contract: who submits nominations, owns the forecasting model and has authority to trade intraday? Contracts must also establish who pays when measured output differs from the nominated position and how balancing costs are divided between generator and trader. Those terms can materially alter the economics of otherwise similar power purchase agreements (PPAs).
Transparency matters particularly when a third-party trader or balancing responsible party controls settlement. A wind farm owner should be able to trace the forecast, nomination and measured output through to balancing settlement. Without that record, imbalance can become a commercial cost that is difficult to audit.
Flexibility and financing
Serbia’s more sophisticated electricity system may also offer opportunities for flexible assets. EMS procures ancillary services and operates balancing arrangements covering frequency-related reserves and balancing activation. Over the longer term, wind projects paired with storage, flexible portfolios or capable aggregators could provide some of the flexibility needed to manage balancing requirements, rather than only creating them; doing so requires technical qualification, control systems and clear market rules.
Financing needs to reflect these operating risks rather than treating balancing costs as a small generic assumption. Lenders should review historical forecast-error distributions, trading arrangements, forecasting-provider quality and the contractual allocation of imbalance. They should also stress periods when adverse factors coincide: production below forecast may occur while upward balancing energy is expensive, while unexpectedly high output may arrive during a regional surplus when prices are weak.
That risk is asymmetric, and market integration is becoming as important as generation. Serbia has already shown that wind projects can attract international investors and non-recourse financing. Operating those assets efficiently in a more liquid, volatile and increasingly regional electricity market will determine how variable production translates into predictable cash flow.