Country profile: United States

Summary figures for 2017

The following information is from the NEA publication Nuclear Energy Data, the annual compilation of official statistics and country reports on nuclear energy in OECD member countries.

Country Number of nuclear power plants connected to the grid Nuclear electricity generation (net TWh) Nuclear percentage of total electricity supply
United States99805.0 (b)20.1
OECD America120911.818.0
OECD Total3111 856.817.6
NEA Total3522 062.617.9
(b) Preliminary data.

Country report

Nuclear power plants in the United States represent approximately one-quarter of the world's nuclear power capacity. As of 31 December 2017, the United States operated 99 light water reactors (the same as at the end of 2016) with a combined net capacity of 99.56 gigawatts electric (GWe). Data are preliminary and include the electric power sector only. In 2017, US reactors generated 20.05% of total utility-scale electricity while comprising 9.27% of total US electric capacity.

In 2017, US nuclear power plants generated 804.95 net terawatt-hours (TWh) of electricity of the total electricity generation of 4 014.80 TWh based on preliminary data from the US Energy Information Administration (EIA). Data include only the electric power sector. For more than a decade, the nuclear share of total generation has remained relatively constant as recent permanent shutdowns have been offset by increased performance (capacity factors) and uprates.

The following paragraphs describe current conditions in the United States related to nuclear power and uranium.

Source: Nuclear Energy Data 2018