TOP 10

Net capacity of 95.5 GWe

93 Nuclear reactors

The US claims top spot , with 93 operable nuclear reactors offering a combined net capacity of 95.5 GWe . In 2020 , nuclear generated 19.7 % of the country ' s electricity . There had been four AP1000 reactors under construction , but two of these have been cancelled . One of the reasons for the hiatus in new build in the USA to date has been the extremely successful evolution in maintenance strategies . Over the last 15 years , improved operational performance has increased utilisation of US nuclear power plants , with the increased output equivalentto 19 new 1000 MWe plants being built . energydigital . com 111