Serbia’s power market sent a mixed but important signal in Week 25. The country moved from a net import position into a modest net export balance, yet the SEEPEX weekly price still rose. That combination says more about the new structure of regional electricity trading than a simple domestic supply-demand reading would suggest.
SEEPEX averaged around €85.73/MWh, up by almost 10% week-on-week. At the same time, Serbia shifted from net imports of more than 100 GWh in the previous week to net exports of around 21 GWh. Hydro generation improved sharply, while thermal output was lower. In a closed market, that would normally put downward pressure on prices. But Serbia is not a closed market. Its price is increasingly formed inside a regional grid where Hungary, Romania, Croatia, Bulgaria and Greece all transmit signals through interconnectors, congestion and trading behaviour.
The Serbian case is important because it shows that national balance is no longer enough to explain price movement. Serbia can produce more, export more and still experience a higher market price if surrounding systems are tighter. Hungary moved higher, Croatia moved above €100/MWh, Romania also increased, and Italy remained at a strong premium. Those neighbouring price signals created a regional floor that Serbia could not ignore.
Hydro was the stabilising element. Stronger hydro output gave Serbia more flexibility and helped reduce reliance on imports. This is particularly important during summer, when cooling demand can increase load and solar production creates sharper intraday ramps. Hydro remains Serbia’s most valuable flexible renewable resource, not only because it produces electricity, but because it can support balancing and reduce exposure to expensive peak-hour imports.
Coal remains the other side of the Serbian equation. Lower thermal output can improve short-term emissions and reduce fuel pressure, but Serbia still relies heavily on lignite-based generation for system stability. As more renewables enter the grid, the role of thermal plants will gradually shift from baseload output to flexibility, reserve and security of supply. That transition will not be smooth unless grid investments, forecasting, balancing rules and storage development move faster.
For traders, the Serbian market is becoming more attractive because it can behave differently from its neighbours. It can sit below Hungary and Croatia, trade close to Bulgaria and Greece, and still respond to Italian and Central European premiums. This makes SEEPEX more relevant for cross-border positioning, particularly during weeks when hydro recovery changes the domestic balance.
For investors, the lesson is direct. Serbia’s future renewable projects should not be valued only on expected annual generation. Their value will depend on grid connection quality, dispatch profile, curtailment exposure, balancing cost, PPA structure and access to buyers that understand hourly market risk. The Week 25 signal was clear: Serbia can export and still price higher because regional scarcity is becoming part of the domestic market reality.
