Nuclear Energy Generation by State

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Nuclear energy remains a major power source in the U.S. Nuclear power accounts for 19.1% of the total electricity generated in the country, according to the most recent data from the U.S. Energy Information Administration (EIA).

Choose Energy’s nuclear generation report analyzes the latest available EIA data (November 2025) to determine which states produce the most nuclear power. The tables on this page highlight how nuclear generation has changed nationally and at the state level. You can use this information to compare nuclear energy by state.

(The following states did not generate a significant amount of nuclear energy in November, 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.)

In November, Illinois generated the most nuclear energy, according to the EIA’s most recent data. Illinois produced 7,642 thousand megawatt-hours, followed by Pennsylvania – 5,943 and Georgia –4,547

Nationally, nuclear energy generation increased approximately 7.8% from October to November. The U.S. produced a total of 63,809 thousand megawatt-hours of nuclear power in November 2025. Texas’ nuclear power generation increased by 15.7%. Kansas experienced the highest increase in nuclear energy production at 1,713%, while production in Missouri decreased by 64.1%, marking the only drop in the United States from October to November.

Following is a list of the states with significant nuclear energy generation, the amounts (in thousand megawatt-hours) produced in November 2025, and how the percentage generation changed from the previous month.

While nuclear energy rose nationally over the course of the year, several states experienced a decrease in production. Missouri’s nuclear generation dropped the most, falling 63.2% since last year.

The following table shows the states that experienced the sharpest decrease in nuclear generation year over year.

Nuclear energy currently makes up 19.1% of all electricity generated in the U.S. In November, New Hampshire produced the highest percentage of electricity from nuclear power. A whopping 61.3% of the state’s electricity came from nuclear sources.

The following table shows which states produced the highest percentage of their electricity from nuclear energy.

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