France Cuts Nuclear Power Output as Intense Heatwave Hits Europe

Key Facts

1France slashed nuclear power generation by 6.4 GW, equivalent to 14% of total demand, due to rising river temperatures.

2EDF was forced to take Golfech 2 and Bugey 3 reactors offline and curtail output at six others.

Amid escalating climate challenges pressuring Europe's energy infrastructure, France has slashed its nuclear power generation by 6.4 GW, representing 14% of total domestic demand. According to reports, EDF was forced to take the Golfech 2 and Bugey 3 reactors completely offline and curtail output at six other facilities as river temperatures rose beyond safety limits required for cooling systems.

These curtailments arrive at a sensitive juncture for the European energy market, where previous heatwaves have historically driven power and gas prices higher due to supply tightening. While EDF's reactor availability had improved compared to last year following the resolution of stress-corrosion issues, extreme weather remains a recurring seasonal headwind, with Météo-France reporting temperatures exceeding 40 degrees Celsius in several regions.

Operationally, commodity traders are monitoring the duration of these cuts and their impact on France's status as a net energy exporter. Looking ahead, the market will eye the EIA Weekly Petroleum Report on July 8, 2026, for broader energy demand signals, while water levels in the Rhone and Garonne rivers remain the primary catalysts for determining when full nuclear capacity can be restored.