Croatian power traded below zero at Sunday lunchtime, while neighbours' evening prices passed EUR 225
Day-ahead prices for 6 September 2026: Croatia around -EUR 0.93/MWh at the solar peak. Hungary fell to about -EUR 1.5 at 13:00, then rose to about EUR 227.7 at 20:00. Analysts tie the swing to regional solar oversupply and point to batteries as the tool for it.
Lunchtime on a sunny Sunday: the power exchange is drowning in solar. Eight hours later the same grid is paying top money for every megawatt-hour it can find.
Power Trading News Europe reported on 6 September 2026 that solar output pushed day-ahead prices across central and south-east Europe to zero or below at midday. Croatia reached around -EUR 0.93 per MWh. In Hungary the price fell to about -EUR 1.5 at 13:00, then climbed to about EUR 227.7 at 20:00. Bulgaria and Greece also reached roughly EUR 225 to 227 in the evening.
SEE Energy News described the same day: weekend demand was low, solar was strong, and the evening rebound came as the sun set and other sources were needed. Both outlets say the pattern strengthens the case for storage and flexible demand.
Analogy: it is a fish market where the catch is given away at noon and fought over at dinner. A cold room in between changes everything.
Good: a clear, dated picture of the daily swing in the region Croatia trades with. That gap between midday and evening is the reason a battery beside workplace solar can earn its keep.
Bad: one Sunday is one Sunday. Weekday prices and winter prices look different, and a retail supply contract may hide most of this swing from a business bill.
Ugly: the Croatian evening price is not given in these reports. The EUR 225 figures belong to neighbouring markets, so we do not claim them for Croatia.
Source: Power Trading News Europe, 6 Sep 2026 - solar surge drives SEE power prices to zero before EUR 225/MWh evening rebound; SEE Energy News, 6 Sep 2026 - solar-driven negative prices before evening rebound.