Day-ahead electricity prices in Southeast Europe fell for Saturday delivery, with regional markets pushed below €100/MWh as weekend demand weakened and solar generation remained strong. Even with lower average prices, traders pointed to ongoing evening price volatility. They also highlighted tighter transmission conditions expected later in July and weaker hydropower availability in parts of the region.
Weekend price levels and market convergence
Regional exchanges showed closer alignment versus the prior working week. SEEPEX settled at €94.24/MWh, while IBEX Bulgaria reached €93.46/MWh. OPCOM Romania was at €93.75/MWh, CROPEX Croatia at €95.40/MWh, HUPX Hungary at €97.34/MWh, BSP SouthPool Slovenia at €98.22/MWh and HENEX Greece at €98.82/MWh.
The narrowing spread left the regional price range slightly above €5/MWh, indicating a high degree of alignment across Central and Southeast European markets for weekend delivery.
Friday-to-weekend correction and drivers
The decline followed higher prices on Friday across several markets. Hungary traded above €123/MWh, Slovenia above €125/MWh, and Croatia approached €120/MWh. Serbia remained the lowest-priced market among the main SEE exchanges at €106.01/MWh.
The weekend correction was attributed mainly to weaker consumption over the weekend and stronger renewable output rather than an improvement in regional supply conditions.
Intraday volatility shaped by solar and evening demand
Hourly price volatility remained a key feature of market pricing. Strong solar generation during midday hours pushed several markets toward €0/MWh during peak photovoltaic production. Evening demand then lifted prices back toward approximately €159/MWh.
The intraday spreads reached close to €160/MWh, reflecting large swings between midday and evening periods.
Demand patterns and hydropower flexibility
The weekend demand profile provided temporary relief for electricity systems across Southeast Europe. Combined demand across major regional markets declined by around 6.5% compared with Friday, with industrial consumption weakening while residential demand stayed relatively stable under warm summer conditions.
Hydropower conditions continued to influence flexibility during peak hours. Reservoir output was weaker than spring levels, increasing reliance on thermal generation, electricity imports and other flexible resources when demand rises.
Cross-border flows and transmission outlook
Bilateral power flows continued to affect regional price formation. Bulgaria remained the main exporting market, supported by stable nuclear generation and strong solar output, while Serbia, Croatia and Hungary relied on imports during certain hours.
Montenegro maintained use of the subsea interconnector with Italy as an export route when domestic generation exceeded local consumption.
Tighter transmission conditions are expected to become more prominent in the second half of July. Import capacity on some corridors is forecast to narrow, including reduced capacity from Bosnia and Herzegovina toward Serbia, while congestion remains elevated on interconnections linking Southeast Europe with Italy, Austria and Türkiye.
Market participants warned that higher temperatures, thermal plant outages or weaker hydro generation could quickly reverse the weekend price weakness.
Storage projects and grid development in the region
Battery storage remained a major long-term theme in the region’s power market developments. Developers in Romania, Bulgaria, Greece, Croatia and Slovenia are advancing utility-scale storage projects designed to capture large intraday price differences while providing balancing and ancillary services.
Grid expansion also remains central to the transition underway across the region. Romania continues to expand transmission infrastructure for new renewable capacity, while Greece is progressing island interconnections and offshore grid projects.
In Serbia, renewable energy policy developments continue alongside investor focus on transmission access, connection capacity and project implementation timelines.
Near-term factors for the coming week
The outlook for the next week depends largely on temperature trends, hydrological conditions and transmission availability. Weekend price declines are described as unlikely to persist if demand rebounds while hydro resources continue to weaken.
Until large-scale storage capacity becomes more widely available, the gap between low-cost solar hours and expensive evening balancing periods is expected to remain a defining feature of Southeast Europe’s electricity market.