France Shuts Down 3 Nuclear Reactors as Heatwave Pushes River Temperatures to Dangerous Levels

France Shuts Down 3 Nuclear Reactors as Heatwave Pushes River Temperatures to Dangerous Levels

France has shut down three nuclear reactors and closed the Eiffel Tower early as a third heatwave pushes river temperatures to dangerous levels, threatening the country's electricity supply.

· 2 min read ·
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France has been forced to shut down three nuclear reactors along the Rhône and Garonne rivers as a severe heatwave pushes water temperatures to levels that violate environmental regulations [194345]. The reactors were taken offline by French energy operator EDF to prevent the discharge of hot water that could harm aquatic life, as high temperatures reduce the cooling efficiency needed for safe operation [194345]. The shutdowns come as France relies on nuclear power for over 70% of its electricity, and no timeline for restarting the reactors has been announced [194345].

The extreme heat has also forced the iconic Eiffel Tower in Paris to "exceptionally close" at 4 pm on Saturday and Sunday, marking the third heatwave to hit France since May [194410]. French authorities placed nine departments on red alert for extreme heat, with temperatures forecast to reach 42 degrees Celsius in some areas [191826]. The red alert, the highest warning level, signals an "exceptional" heat event requiring public vigilance [191826].

June 2026 was the hottest June ever recorded in Western Europe, with average temperatures 3.05°C above the normal baseline, according to the EU's climate monitoring service Copernicus [192060]. Unusually warm rivers across France are threatening electricity production at several nuclear power stations, as plants rely on river water for cooling but high temperatures and low rainfall have pushed water levels down and temperatures up [195046]. French environmental regulations require nuclear operators to limit hot water discharge into rivers, and when river water gets too warm, plants may have to reduce electricity output to comply with these rules [195046].

The heatwave has also disrupted major events, with Sunday's ninth stage of the Tour de France shortened by 30 kilometers due to the red alert in central France's Corrèze region [194067].

Sources

French Nuclear Plants at Risk as Rivers Overheat #195046France Shuts Down Three Nuclear Reactors as Heatwave Intensifies #194345Barcelona hits 112-year temperature record as French nuclear reactor shuts down from heat #192773Europe’s Hottest June Ever Recorded #193210France heat alert: 9 departments turn red as mercury hits 42C #191826Europe’s Hottest June on Record: Temperatures 3°C Above Normal #192060Eiffel Tower Closes Early as France Bakes in Third Heatwave #194410Tour de France Stage Shortened as Heatwave Hits France #194067

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