Serbia recorded less extreme intraday price volatility than the northern European markets. SEEPEX prices fell to €51.06/MWh at 14:00 before climbing to €150.02/MWh at 22:00, producing a daily spread of €98.96/MWh.
The profile reflects Serbia’s smaller solar fleet, thinner market liquidity and partial insulation from the more strongly integrated European electricity markets. The afternoon low remained almost four times higher than the lows recorded in Hungary and Slovenia, while Serbia’s evening peak was approximately €50/MWh below the maximum prices in those two markets.
For generators, this currently limits the degree of solar cannibalisation experienced by Serbian photovoltaic projects. For consumers and storage operators, however, it also reduces the maximum potential for energy arbitrage. A battery operating at 80 per cent round-trip efficiency and charging at €51.06/MWh would need to achieve approximately €63.83/MWh on discharge simply to recover the cost of the electricity lost during the cycle. Selling at €150.02/MWh would leave a theoretical gross energy margin of around €86/MWh before network charges, degradation and market-access costs.
The price curve nevertheless supports the economic case for greater pumped-storage capacity in Serbia. The refurbished Bajina Bašta facility can preserve water during cheaper solar hours and generate electricity during the evening ramp, while the long-discussed Đerdap 3 project could provide substantially greater multi-hour flexibility.
The Serbian government said that six parties submitted initial expressions of interest for Đerdap 3 by 25 June. However, only the consortium led by Bechtel UK Holdings International and ENKA qualified for the second stage. Other expressions of interest came from groups involving Fresh Development and LDS, Voith Hydro, Channell Commercial, Moravacem, and Global TBM with Robbins.
Separately, the government launched a procurement procedure on 21 July for planning and part of the project’s technical documentation. These steps indicate movement beyond political promotion, but they do not represent an investment decision, construction contract or financing close.
The qualification of only one consortium also reduces competitive tension over engineering scope, construction costs and risk allocation. Đerdap 3 must additionally be assessed against grid-connection requirements, reservoir design, environmental approvals and the hydrological performance of the wider Danube system.
A single trading day with a €99/MWh price spread demonstrates potential system value, but it cannot by itself underpin the investment case for a large pumped-storage project requiring substantial capital and a multi-decade recovery period.
