On 11 March 2026, electricity markets across Central and South-East Europe reported a notable decline in day-ahead prices, driven by milder weather and an increase in renewable energy generation. The Hungarian HUPX market recorded a price drop to €111.01/MWh, marking a significant decrease of €26.3/MWh from the previous day. Similarly, Romania’s OPCOM and Bulgaria’s IBEX markets saw prices settle at approximately €93.83/MWh, down by about €16.1/MWh.
Forecasted system consumption across the region reached around 33,280 MW, reflecting a modest increase of 221 MW day-on-day but remaining below winter peak levels. This stable demand coincided with a rise in renewable energy production, which included solar generation peaking at approximately 4,376 MW and wind output at about 889 MW. The increased renewable supply contributed to a softened market balance, reducing reliance on marginal thermal generation during daylight hours.
Commodity benchmarks further influenced the bearish sentiment in power markets. The CEGH gas benchmark fell to €48.62/MWh, down by €11.1/MWh, while EU carbon allowances traded near €72.91/t. The decline in gas prices enhanced the competitiveness of gas-fired plants over coal, subsequently lowering marginal clearing prices in various regional markets.
Market participants are anticipating continued price softness in the coming weeks as reflected in forward power contracts. Hungarian futures for week 12 hovered around €105/MWh, while April 2026 base contracts traded close to €96/MWh. These figures suggest an expectation of balanced market fundamentals leading into early spring.
Cross-border Flows: Romania and Slovenia Anchor Regional Supply
The dynamics of cross-border electricity flows play a crucial role in shaping the structure of power markets in South-East Europe (SEE). Romania has emerged as a key balancing hub within the region, with average generation on 11 March reaching approximately 4,152 MW, slightly above domestic consumption of 4,138 MW. This allowed Romania to maintain significant export flows through its interconnections.
Romanian exports to Bulgaria were approximately 1,300 MW while flows towards Serbia approached 700 MW, underscoring Romania’s vital role in stabilizing the Western Balkan power system. The generation mix in Romania remains heavily reliant on coal and hydropower, with coal-fired plants contributing around 2,327 MW and hydropower generating roughly 1,168 MW.
In Slovenia, total electricity generation averaged 1,587 MW against domestic consumption of 1,619 MW during this period. Slovenia’s system is sustained by nuclear baseload generation from the Krško plant at 702 MW and complemented by hydropower output of about 377 MW.
The interconnected nature of these systems facilitates price convergence across regional markets; however, temporary transmission constraints can lead to market fragmentation and present trading opportunities for arbitrage among participants.
Renewable Volatility: Short-term Supply Swings Drive Trading Opportunities
Renewable energy generation continues to introduce significant short-term volatility into SEE electricity markets. Rapid changes in wind and solar output can dramatically affect supply-demand balances and influence day-ahead pricing mechanisms. For instance, Romanian wind generation surged to 614 MW during this trading period compared to just 54 MW earlier in the week due to shifting weather patterns. Solar production also contributed considerably at approximately 739 MW during daytime hours.
The role of hydropower remains critical for balancing supply within the region; Romanian hydro generation averaged around 1,168 MW while Albania’s electricity system heavily depended on hydropower sources for about 55% of its total generation capacity.
In Greece, wind energy accounted for roughly 22% of total output while gas-fired plants provided around 25%, showcasing an evolving generation mix that increasingly integrates renewable variability with flexible thermal sources.
The rising share of intermittent renewable energy necessitates enhanced short-term forecasting tools for trading desks as fluctuations can shift wind output dramatically from around 600 MW to over 2,400 MW within days. As renewable capacity expands throughout the Balkans without substantial grid enhancements or additional storage solutions, price volatility is likely to increase further—highlighting the strategic importance of intraday trading and cross-border arbitrage opportunities for market participants.
