Nuclear Energy Generation by State

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Last updated February, 2025

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 nuclear energy generation report. This report is based on the latest U.S. Energy Information Administration data, which shows nuclear generation by state from November 2024.

Which state generates the largest amount of energy from nuclear sources? The EIA’s most recent data shows that in November, it was Illinois, with 8,201 thousand megawatt-hours, followed by Pennsylvania – 6,160, and Alabama – 4,015.

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

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

Across the country, electricity generation from nuclear power increased by 5.9% from October to November. The U.S. produced a total of 61,904 thousand megawatt-hours of nuclear power in November 2024. Texas’ nuclear power generation increased by 6.6%. New Hampshire experienced the highest increase in nuclear energy production at 349%, while production in Mississippi decreased by 45.1%, marking the most significant 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, and the percentage generation changed from the previous month.

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

New Hampshire produced the highest percentage of electricity from nuclear energy in November, 65% of the states’ electricity came from nuclear energy.

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