Nuclear Energy Generation by State

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Last updated June 3 , 2024

Nuclear energy remains a major power source in the U.S. Nuclear power accounts for 19.6% of the total electricity generated in the country, according to the June Nuclear Energy Report. This report is based on the latest U.S. Energy Information Administration data, which shows nuclear generation by state from March 2024.

Which state generates the largest amount of energy from nuclear sources? The EIA’s most recent data shows that in March, it was Illinois, with 8,085 thousand megawatt-hours. 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 did not generate a significant amount of nuclear energy in march, so they will not be included in the findings below.

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

Across the country, electricity generation from nuclear power decreased by 1.92% from February to March. The U.S. produced a total of 63,346 thousand megawatt-hours of nuclear energy in March 2024. Of the states with significant nuclear generation, 12 experienced a decrease in nuclear generation from month to month, and 16 experienced an increase. Texas nuclear power generation dropped 7.11% from February to March.

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

Nationally, nuclear generation increased 0.84% from March 2023 to March 2024. 11 states experienced decreases within the year, while 16 experienced increased production. Nuclear generation in Louisiana increased by 66.9% year over year.

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

Generation decreased by the greatest percentage in Mississippi, where production fell by 96.06% since 2023.

New Hampshire produced the highest percentage of electricity from nuclear. In March, 64.4% of the state’s electricity came from nuclear energy.

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