Serbia maintained one of the more competitive wholesale electricity positions in Southeast Europe during the second half of August, supported by stronger hydro, renewable and thermal generation. However, the sharp increase in prices at the beginning of September demonstrated how quickly that advantage can narrow as domestic and regional market conditions change.
Serbia’s day-ahead electricity market averaged €133.02/MWh during August 17-23, placing it around €22/MWh below Hungary’s €155.16/MWh and approximately €21/MWh below Croatia. Among the markets included in the regional comparison, only Turkey recorded lower prices.
The discount was particularly significant because Serbian electricity demand increased sharply during the same period. Compared with Week 30 in late July, electricity consumption in Serbia rose by 13.54%, while demand across the wider group of monitored Southeast European markets declined by around 6.4%.
Serbia was able to absorb the additional demand through a broad increase in domestic generation. Variable renewable output rose by 48.9%, hydropower generation increased by 66.58%, while thermal production was up 12.45%. The stronger generation mix allowed Serbia to remain a net electricity exporter despite higher domestic consumption.
This combination created a substantial price differential between Serbia and neighbouring markets, particularly Hungary and Croatia, providing traders with opportunities to move electricity north toward higher-priced systems.
However, the beginning of September showed that these spreads can change rapidly. SEEPEX baseload prices increased by €34.04/MWh to €166.25/MWh for September 1 delivery, reducing Serbia’s discount to Hungary’s HUPX market to just €10.49/MWh. Hungary cleared at €176.74/MWh, while prices in Romania, Bulgaria and Greece were all clustered around the mid-€170/MWh range.
Serbian prices continued to strengthen, reaching €173.00/MWh for September 2 delivery. The rapid increase highlighted the difference between a structural advantage in generation and a temporary market discount.
Serbia benefits from a diversified electricity portfolio that includes lignite-fired generation, large hydroelectric facilities, wind capacity and an expanding solar sector. When hydropower conditions are favourable and thermal plants operate reliably, this combination can leave the country with surplus electricity and support exports toward higher-priced Central European markets.
However, each component of the generation mix has its own limitations. Hydropower remains dependent on hydrological conditions, coal-fired plants are exposed to outages and maintenance requirements, while wind output can weaken simultaneously across interconnected markets. Meanwhile, the continued expansion of solar generation is increasingly concentrated in lower-priced daytime hours.
Cross-border market conditions are also becoming increasingly important. Romania entered September with nuclear generation severely constrained after low Danube water levels forced the shutdown of both Cernavodă reactors, increasing the country’s need for imported electricity. At the same time, the return of stronger weekday demand contributed to rising regional net imports and tighter conditions across interconnected markets.
As regional markets tightened, SEEPEX prices moved closer to those in Hungary, Romania, Bulgaria and Greece. The development illustrates that Serbia’s price advantage is not permanent but increasingly dependent on the relative balance between domestic generation, regional supply conditions and cross-border demand.
For traders, the opportunity lies less in assuming that Serbia will consistently remain a low-priced market and more in identifying the periods when its generation stack allows it to separate from neighbouring price zones.
The €22/MWh discount between Serbia and Hungary recorded during Week 34 demonstrated the potential size of that opportunity. Its rapid contraction at the beginning of September, however, also showed the risks of treating such a market advantage as permanent.
