Day-ahead electricity prices for delivery on 2 June fell sharply across Hungary, Romania, Bulgaria, Serbia, Croatia and Slovenia, converging close to the €121/MWh level after the prior session’s rally. Hungary’s HUPX settled at €121.92/MWh, down almost €29/MWh day on day. Romania’s OPCOM and Bulgaria’s IBEX both cleared at €121.21/MWh. Serbia’s SEEPEX closed at €120.90/MWh, while Croatia’s CROPEX was at €121.66/MWh and Slovenia’s BSP at €121.75/MWh.
The regional market remained highly coupled, with only limited divergence between Central European and Southeast European bidding zones. Greece traded at a substantial discount, with HENEX settling at €96.31/MWh. The lower Greek price was supported by strong renewable generation and persistent solar oversupply during daylight hours.
Demand and supply balance across the SEE system
Total electricity consumption across the SEE system rose to 28.2 GW, up by approximately 1.4 GW versus the previous trading day as industrial load returned after the weekend period. Regional generation increased by 1.33 GW, enabling the market to absorb higher demand without requiring significant import support. Net imports across the monitored markets fell to just 84 MW, compared with almost 1.2 GW one day earlier.
The generation mix shifted during the session, with solar output declining by around 684 MW. Thermal generation increased to compensate, including a 753 MW rise in gas-fired output, a 314 MW increase in coal generation, and an additional 254 MW from hydro. Gas-fired plants became the primary marginal technology across much of the region, particularly during morning and evening peak periods when solar generation was unavailable.
Generation shares and cross-border flows
Hydropower contributed approximately 25% of regional generation, remaining the single largest source in the mix. Solar accounted for roughly 20%, gas for 17%, and coal and nuclear each represented around 14%. Cross-border flows followed a familiar pattern across the region.
Greece remained the largest importing market, taking about 1.66 GW from neighbouring systems. Romania and Bulgaria continued as net exporters, while Serbia and Croatia relied on imports during parts of the trading day. The relatively low Greek price supported export economics toward neighbouring Balkan markets and Italy.
Forward power pricing and commodity signals
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