SE Europe Power Steady Despite Dry Spell Forecast Through Mid-August
Improving nuclear availability and storage capacity are containing price upside, but deepening drought through mid-August keeps the southeastern grid's hydro balance fragile.
Montel reported on 2026-08-05 that southeastern European power markets were holding steady even as a hot, dry spell was forecast to persist through mid-August. That weather pattern has historically pushed prices sharply higher across a grid that leans heavily on hydropower.6
Hydropower functions as the primary swing supplier across the southeastern European grid. When rivers run low and reservoirs thin, thermal and nuclear capacity must absorb the deficit, and the cost of that substitution feeds directly into regional prices.3
Montel reported on 2026-06-22 that improving nuclear plant availability and a boost in storage capacity were expected to limit the bullish impact of the dry conditions, even as hydropower supply tightened significantly. Analysts told Montel the combination should keep prices contained, despite conditions they described as "super dry."3
The scale of demand the region can reach in sustained heat was visible on 2026-06-30, when Serbia was set to register record high electricity demand as the heatwave moved east and cooling loads intensified. Southeast European power prices were still expected to ease as that hot spell began to wane, traders told Montel — evidence that available supply held enough room to respond even at that demand extreme.5
Conditions have remained hot and dry since late June, with Montel's current forecast extending the dry spell through mid-August. Hydro reservoirs recover slowly. Each additional week without meaningful rainfall pushes more generation onto nuclear and thermal assets that are both costlier to run and subject to their own reliability limits.6,3
ICE Endex TTF front-month traded at €55.92/MWh in morning trade on 2026-08-05. That reading does not indicate acute southeastern drought stress being priced into the wider European gas market. Northwestern Europe is largely insulated from southeastern European hydro shortfalls by its different generation mix and cross-border flow constraints. But southeastern power prices can diverge sharply from hub levels when the supply balance tightens enough to exhaust interconnector capacity. The context has been made more sensitive by a loss of roughly 20% of daily global LNG supply from Middle East disruptions, which has narrowed the headroom that European storage positions provide against regional supply squeezes, investing.com analysis noted.4
Analysts told Montel in May 2026 that Europe could see power prices jump 10% from then-current levels over the summer, driven by hot, dry conditions alongside risks from the Strait of Hormuz remaining closed.1 That upside has not fully materialised, and southeastern European prices have tracked below the upside case. But the weather component is still running.
Broader EU gas demand has been running about 10% below prior-year levels, bolstering storage positions across the continent, according to data noted by The Economist.2 That buffer carries more weight in a summer when southeastern Europe is running dry.
Nuclear availability remains the less predictable variable in the regional balance. Hydro shortfalls can be tracked through precipitation data and reservoir levels. Nuclear output in southeastern European markets has proven more volatile: plants can trip unexpectedly or face curtailment in sustained heat where river cooling becomes constrained. Montel's June 2026 analysis pointed to improving nuclear availability as a key factor containing prices; if that position erodes through August, the buffer narrows fast.3
Stable nuclear output and storage capacity are currently providing cover against the drought. The scenario that changes the balance is a dry period extending beyond mid-month, compounded by any unplanned nuclear outage. Reservoir drawdown rates through the remainder of August will give the clearest read on how much of this stability can hold.6,3