Between 15 and 21 June 2026, the key signal in Southeast Europe’s power market was the changing shape of the hourly day-ahead pricing curve rather than the average electricity price. The pattern showed prices softening during midday hours when solar output was higher, followed by a sharp rise after sunset.
Solar output and the midday-to-evening price shift
During the week, solar generation increased by 8.1%, adding more renewable energy to the system. Despite the higher renewable output, average electricity prices increased across most regional markets. The issue highlighted in the week’s pricing behaviour was not a lack of electricity during daytime, but a shortage of flexible and dispatchable capacity during evening hours. Cooling demand stayed elevated while solar production declined rapidly.
The hourly profile showed the lowest pricing pressure around midday and the strongest price increases after hour 18. Markets including Hungary, Romania, Croatia and Italy moved into premium pricing territory during the evening period. This evening ramp became more prominent in commercial terms for the market.
Evening ramp value for flexible supply and grid services
The shift in evening pricing created opportunities for multiple types of supply and flexibility options. These included gas-fired generation, battery storage, hydropower flexibility, imports and demand-response solutions. The underlying change described was that the evening period increasingly concentrated value compared with earlier hours.
For generators and electricity buyers, the economics were described as moving alongside the price profile changes. Solar projects with merchant exposure faced a growing risk of price cannibalisation during midday hours when renewable output was highest. Assets able to shift generation into evening peak periods were linked to a stronger revenue outlook. Buyers relying only on flat PPAs were described as remaining exposed to the most expensive hours unless contracts included shaping mechanisms, balancing services or storage-backed delivery structures.
Fuel-price moves versus scarcity-hour pricing
The week also indicated that fuel prices were not the only benchmark for electricity market performance in Southeast Europe. TTF gas prices declined by 14.8% to €41.76/MWh, while electricity prices still increased in Serbia, Hungary, Romania, Croatia and Italy. The pricing behaviour pointed to greater value being placed on firmness and flexibility during scarcity hours rather than tracking fuel-cost moves alone.
For investors and market participants, technologies providing flexibility were described as becoming more valuable than simple installed capacity additions. These included batteries, pumped-storage hydropower, flexible gas generation, hydro optimisation and shaped renewable PPAs. The next phase of the regional power market was framed as depending less on annual generation volumes and more on delivering reliable electricity between late afternoon and midnight.
