A nuclear plant in northern France shut down three reactors after a swarm of jellyfish clogged pumps used to cool the units, energy group EDF said on Tuesday. France has seen nuclear power production disrupted by multiple heatwaves and droughts this year, with EDF shutting down several reactors in June and July because of extreme heat. View of the Gravelines nuclear power station, 28 September, 2025 AP PhotoOn Sunday, before the latest closures, France recorded a shortfall of 15.6% in nuclear power production, according to AFP calculations based on EDF data published since 2015. The Gravelines nuclear power plant, near the northern city of Dunkirk, is the largest in Western Europe, with six 900-megawatt reactors. The nuclear power plant was temporarily taken offline a year ago after jellyfish clogged its seawater pumping stations.