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Nuclear Energy Generation by State

How your state ranks in producing electricity from nuclear energy

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December nuclear energy generation by state report


Dobresum/iStock/Getty images 

Last updated December, 2024

Nuclear energy remains a major power source in the U.S. Nuclear power accounts for 17.4% of the total electricity generated in the country, according to the December nuclear energy generation report. This report is based on the latest U.S. Energy Information Administration data, which shows nuclear generation by state from September 2024.

Which state generates the largest amount of energy from nuclear sources? The EIA’s most recent data shows that in September, it was Illinois, with 7,654 thousand megawatt-hours, followed by Pennsylvania – 6,285, and South Carolina – 4,355.

The following states did not generate a significant amount of nuclear energy in September, so they will not be included in the findings below: Alaska, Colorado, Delaware, Hawaii, Idaho, Indiana, Iowa, Kentucky, Maine, Massachusetts, Montana, Nevada, New Mexico, North Dakota, Oklahoma, Oregon, Rhode Island, South Dakota, Utah, Vermont, West Virginia, and Wyoming

The following charts are based on Choose Energy’s analysis of the EIA’s nuclear energy production data.

How has nuclear energy production changed since last month?

Across the country, electricity generation from nuclear power decreased by 10.2% from August to September. The U.S. produced a total of 62,660 thousand megawatt-hours of nuclear power in September 2024. Texas’ nuclear power generation decreased by 1.27%. Kansas experienced the highest increase in nuclear energy production at 13.6%, while production in Connecticut decreased by 29.3%, marking the most significant drop in the United States from August to September.

Following is a list of the states with significant nuclear energy generation, the amounts (in thousand megawatt-hours) produced in September, and the percentage generation changed from the previous month.

How has nuclear energy production changed since last year?

Electricity generation from nuclear power decreased by 4.42% from September 2023 to September 2024. Texas’ nuclear power generation increased by 0.14% since last year. Virginia experienced the highest increase in nuclear energy production at 27.25%, while production in Tennessee decreased by 27.8%, marking the most significant drop in the United States from September 2023 to September 2024

Following are the states that increased the most in nuclear energy generation compared to last year:

Which states produce the highest percentage of electricity from nuclear?

South Carolina, Illinois and New Hampshire produced the highest percentage of electricity from nuclear in September, 52% of the states’ electricity came from nuclear energy.

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