The Southeast European power markets exhibited notable divergence on April 8, with Serbia and Hungary achieving significant price premiums over a generally softer regional pricing cluster. This shift is attributed to localized supply constraints and reduced cross-border electricity inflows, contrasting with Romania, Bulgaria, and Greece, where prices declined due to improved renewable energy generation and a more balanced system.
In the day-ahead market, Hungary’s HUPX reported a clearing price of 94.42 €/MWh, reflecting an increase of 3.1 €/MWh from the previous day. Similarly, Serbia’s SEEPEX surged to 97.39 €/MWh, marking a gain of 7.0 €/MWh and positioning it as the highest-performing market in the region. In stark contrast, Romania (80.63 €/MWh), Bulgaria (80.41 €/MWh), and Greece (80.41 €/MWh) all experienced price declines ranging from 4 to 7 €/MWh, reinforcing a lower-priced southeastern cluster.
Despite these price movements, total consumption across the Southeast Europe and Hungary system rose to 31,058 MW—an increase of 1,626 MW—while generation expanded more significantly to reach 28,571 MW, up by 2,148 MW. The growth in generation was primarily driven by solar energy (+728 MW to 4,997 MW), hydro (+608 MW to 7,459 MW), and gas (+630 MW to 3,116 MW), compensating for a decline in coal production.
This shift in generation dynamics led the region to transition from a net import position towards near balance, with net imports decreasing sharply to -160 MW—a day-on-day improvement of 1,021 MW—indicating reduced reliance on external supply.
However, the primary factor contributing to the price strength in Hungary and Serbia was not an overall scarcity of supply but rather changes in cross-border flow dynamics. Imports into the Hungary-Slovenia system from Austria and Slovakia dropped to 1,955 MW, down by 478 MW, while imports from Italy into the SEE region also diminished. Concurrently, the spread between Hungary and Germany widened to 7.45 €/MWh—an increase of 6 €/MWh—highlighting the premium that the Hungarian hub commands compared to Western Europe.
This reduction in core inflows has effectively isolated the pricing dynamics within the Hungary-Serbia zone, allowing local market fundamentals to take precedence. In Serbia specifically, prices traded nearly 17 €/MWh above those in Romania and Bulgaria, suggesting localized balancing challenges and heightened demand during evening peak hours rather than systemic tightness. The market structure has shown patterns of significant midday price softness followed by sharp increases during evening hours as solar generation dominates during daylight.
Forecasts for renewable energy output align with these observations; total renewable energy generation reached 10,179 MW—comprising 4,320 MW from solar and 3,394 MW from wind—with solar output increasing day-on-day while wind generation saw a slight decline. This combination tends to heighten intra-day volatility in markets lacking robust storage or interconnection capabilities.
Looking ahead at forward markets reveals a more cautious sentiment. Hungarian baseload forwards have edged higher with Week 16 priced at 116.50 €/MWh, May-26 at 100.50 €/MWh, and Cal-26 at 115.50 €/MWh—all supported by stable gas prices and carbon market stability (CEGH gas at 53.88 €/MWh; EUA at 71.51 €/t). However, spreads to Germany have softened slightly across the curve, indicating that current tightness may not be sustainable if renewable generation continues its upward trend and interconnection flows normalize.
Structural changes across the region are also influencing market behavior significantly. Developments such as Bulgaria’s partial reactivation of the Chaira pumped-storage plant, Greece’s addition of 2.13 GW of solar capacity, and Hungary’s targeted expansion of battery storage capacity (aiming for between 2.4–2.5 GW) suggest a market increasingly reliant on renewable intermittency and balancing flexibility.
In summary, while immediate trading focus remains on regional spreads rather than outright price movements—where the Romania-Bulgaria-Greece corridor around 80 €/MWh acts as a soft floor—Hungary and Serbia continue to command premiums driven by localized constraints. Any easing of cross-border congestion or further enhancements in renewable output could rapidly compress these spreads moving forward.
Currently, Serbia stands out as the tightest node within the Balkan power system while Hungary retains its pivotal role as a pricing benchmark between Western Europe and Southeast Europe.
