The country has seen nuclear power production disrupted by multiple heatwaves and droughts this year. Article contentFrance uses nuclear power to generate around 70 percent of its electricity. The country has seen nuclear power production disrupted by multiple heatwaves and droughts this year. According to AFP calculations based on data published by energy group EDF since 2015, 20.4 percent of generating capacity was unavailable. Much of the lost nuclear generating capacity was due to full or partial shutdowns at five of the six reactors at the Gravelines nuclear power plant after a swarm of jellyfish clogged pumps used to cool the units.