Hungary's Paks Nuclear Plant Holds at 0.5 GW as PM Warns of Further Cuts
With Paks running at a quarter of its 2 GW capacity and more reductions possible, Hungarian power markets face continued strain until rainfall arrives later this week.
Hungary's prime minister Peter Magyar warned on Sunday (2026-08-16) that further output cuts at the Paks nuclear plant remain possible, with the facility producing just 0.5 GW against its full rated capacity of 2 GW. Rain is forecast later in the week of 2026-08-17, which may ease the cooling water constraints tied to low Danube flows — but the situation is not resolved yet.6
Paks provides the backbone of Hungary's electricity supply, so operating at a quarter of capacity places immediate pressure on the country's power balance and its ability to export. The plant's extended vulnerability through a summer of drought has exposed how thinly margined the grid is when its single nuclear station is impaired for weeks at a time.6
The deterioration has been steep. As recently as early August, the situation was more acute: on Tuesday (2026-08-04), Montel reported that Hungary's remaining operating reactor — at that point producing just 240 MW — risked a full shutdown within 48 hours unless rainfall in Austria raised Danube levels sufficiently. That near-shutdown warning gives context to Sunday's (2026-08-16) 0.5 GW figure, which reflects a partial recovery but still leaves the plant far below normal output.3
That partial recovery followed a restart. Hungary expected to switch on one Paks turbine on Monday (2026-08-10) evening after rain lifted Danube water levels enough to resume operations, Prime Minister Magyar said at the time. The 0.5 GW figure now operating suggests roughly one unit running, with the rest of the plant still offline pending further improvement in river conditions.4
The drought driving these constraints is not a routine summer dip. The Danube fell to an all-time low during July 2026, forcing nuclear output offline across the affected region, with the World Weather Attribution consortium — led by the Royal Netherlands Meteorological Institute and co-authored by scientists from more than a dozen European countries and the United States — linking the severity to broader climate trends.5
For traders watching European power and gas, the Paks situation matters through its effect on Hungarian import demand. A country running a large nuclear deficit in summer typically pulls more gas-fired generation to cover the gap, which feeds back into regional gas consumption and, through TTF pricing, broader European gas balances. ICE Endex TTF front-month was quoted at €61.79/MWh on 2026-08-18. Whether Paks output recovers materially before autumn demand begins to build will shape how tightly the Hungarian grid enters the heating season.
The nuclear outage also carries a secondary dimension for gas transit. Hungary is a significant conduit for pipeline gas flows into Ukraine, which imported 2.97 bcm from Hungary last year — equivalent to roughly 40% of Ukraine's annual demand. Traders told Montel in May (2026-05-20) that Ukraine has several alternatives and could manage a Hungarian gas flow cut, pointing to other supply routes. That assessment has not been publicly revised since.1,3
Paks itself carries a separate long-run complication. The plant's expansion — a Rosatom-led project — has been beset by delays and financing problems, partly because of sanctions on Russia. The Economist reported in the week of 2026-05-18 that Rosatom was in talks to sell a 49% stake in the $25 billion plant, a sign of the financial stress bearing on the project even before the operational disruptions of this summer.2
The European Commission pledged in May 2026 to release plans for taxes or levies on Russian enriched uranium, aiming to phase out its use alongside a halt to Russian gas imports by 2027. It subsequently delayed the uranium plans. The hesitation underlines how exposed some member states remain to Russian nuclear supply chains — and how politically awkward accelerating that exit remains for governments in Budapest's position.2
For now, the market's attention is narrower: whether rainfall later in the week of 2026-08-17 is sufficient to sustain Paks output above its current 0.5 GW floor, or whether another drawdown forces Magyar back to the podium with a new warning. A second significant cut from here would push Hungary's power deficit into territory not covered by a partial turbine restart, and would likely require heavier cross-border imports at a time when the wider central European grid is itself managing drought-thinned hydro resources.6