Electricity prices across much of Southeast Europe rose above €200/MWh for Oct. 5 delivery as weekday demand increased and wind generation fell. Greece also recorded hours of negative prices during periods of heavy solar output, before prices rebounded after sunset.
On the day-ahead market, Hungary’s HUPX average climbed by €71.90/MWh to €232.76/MWh. Romania increased by €67.50/MWh to €228.48/MWh, while Croatia reached €219.83/MWh, Slovenia €217.71/MWh, and Bulgaria €203.78/MWh.
Albania recorded the largest rise in the region, increasing by almost €120/MWh to €277.08/MWh. Regional electricity demand grew by about 10.6% to 28.7 GW, alongside a forecast wind output decline of around 886 MW. Net imports into the monitored SEE region increased to roughly 1.64 GW.
Cross-border price spreads and solar-driven negatives in Greece
Serbia remained relatively low at €169.68/MWh, leaving SEEPEX more than €60/MWh below Hungary and Romania. The gap reflected the impact of limited cross-border capacity, where cheaper Serbian electricity did not fully remove premiums in neighbouring markets when transmission routes were congested or already heavily utilised.
Greece showed a different pattern: its daily average stayed around €148–150/MWh, but solar output pushed prices below zero for almost eight hours. Prices then rebounded sharply after sunset, following the period of negative pricing.
The price movements highlighted a split between evening scarcity and import dependence in some countries and midday renewable oversupply in others. The resulting conditions supported a commercial premium for batteries, pumped hydro, flexible demand, and transmission capacity able to move electricity across both time and geography.
The regional system was producing more renewable power, while the value depended on when and where each megawatt was available.