United States Nuclear Power: Generation, Share and Trend
The United States generated 785 TWh of electricity from nuclear in 2025, 17.4% of its total, according to Ember. That made it the largest nuclear power producer in 2025 of the 32 countries with Ember data, comparing each country's latest year. Nuclear supplied 8.9% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through August 2026; they are
compiled from national sources and are not real time.
Key Facts
The United States generated 785 TWh of electricity from nuclear in 2025.
Nuclear supplied 17.4% of the United States' electricity in 2025.
The United States was the largest nuclear power producer in 2025 among the 32 countries with Ember data, comparing each country's latest year.
The United States' nuclear generation in 2025 was 1% lower than in 2020, when it was 790 TWh.
The United States' nuclear generation in 2025 was 2% lower than in 2015, when it was 797 TWh.
The United States' nuclear generation peaked at 809 TWh in 2019.
The United States' nuclear share in 2025 was above the world share of 8.9%.
The United States had 96.9 GW of nuclear generating capacity in 2025.
Key Figures, 2025
Measure
Value
As of / source
Nuclear generation
785 TWh
2025 · Ember
Share of the United States' electricity
17.4%
2025 · Ember
World share of nuclear
8.9%
2025 · Ember
Rank by nuclear generation (each country's latest year)
1 of 32
2025 · Ember
Nuclear capacity
96.9 GW
2025 · Ember
Nuclear Generation Year by Year
Ember annual statistics, 2000 to 2025
Nuclear
The United States' electricity generation from nuclear each year from 2000 to 2025, in TWh. It was 785 TWh in 2025.
Annual statistics through 2025, TWh
United States nuclear electricity generation, 2000 to 2025
Year
Nuclear
2000
754 TWh
2001
769 TWh
2002
780 TWh
2003
764 TWh
2004
789 TWh
2005
782 TWh
2006
787 TWh
2007
806 TWh
2008
806 TWh
2009
799 TWh
2010
807 TWh
2011
790 TWh
2012
769 TWh
2013
789 TWh
2014
797 TWh
2015
797 TWh
2016
806 TWh
2017
805 TWh
2018
807 TWh
2019
809 TWh
2020
790 TWh
2021
780 TWh
2022
772 TWh
2023
775 TWh
2024
782 TWh
2025
785 TWh
United StatesWorld
The share of the United States' electricity generated from nuclear, 2000 to 2025, compared with the world share. In 2025 it was 17.4%, against 8.9% worldwide.
Annual statistics through 2025, % of generation
Share of the United States' electricity from nuclear and the world share, 2000 to 2025
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. World shares are Ember's World totals; ranks compare each country's latest year, which can differ between countries.
Nuclear Generation Month by Month
Ember monthly statistics through August 2026
Nuclear
The United States generated 70.7 TWh of electricity from nuclear in August 2026, against 70.7 TWh in August 2025.
Monthly statistics through August 2026, TWh
United States monthly nuclear electricity generation, September 2024 to August 2026
Month
Nuclear
2024-09
62.7 TWh
2024-10
58.8 TWh
2024-11
61.9 TWh
2024-12
71.2 TWh
2025-01
71.7 TWh
2025-02
61.8 TWh
2025-03
62.5 TWh
2025-04
57.9 TWh
2025-05
62.1 TWh
2025-06
66.2 TWh
2025-07
70.8 TWh
2025-08
70.7 TWh
2025-09
65.5 TWh
2025-10
59.2 TWh
2025-11
63.8 TWh
2025-12
72.5 TWh
2026-01
73.3 TWh
2026-02
62.4 TWh
2026-03
62.1 TWh
2026-04
57.4 TWh
2026-05
65.0 TWh
2026-06
68.8 TWh
2026-07
71.4 TWh
2026-08
70.7 TWh
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of August 2026. Monthly figures for the United States can differ slightly from the annual totals.