Three Countries Accounted for Over Half of Global Nuclear Generation in 2023

Nuclear made up 9% of the world’s electricity mix in 2023, with just three countries accounting for over half of global generation.

Global nuclear power generation increased by a marginal 46 TWh (+1.8%) to 2,686 TWh in 2023, recovering less than 40% of its fall in 2022 (-123 TWh, -4.4%). The partial recovery of French nuclear power from 2022 contributed strongly (+41 TWh), together with restarts in Japan’s nuclear fleet (+26 TWh). Elsewhere in the world, new reactors in Finland, the US and China came online and helped offset the effect of voluntary early closure of reactors in Germany and Belgium.