Nuclear Energy Generation by State

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Last updated April 3 , 2024

Nuclear energy remains a major power source in the U.S. Nuclear power accounts for 18.2% of the total electricity generated in the country, according to the April Nuclear Energy Report. This report is based on the latest U.S. Energy Information Administration data, which shows nuclear generation by state from January 2024.

Which state generates the largest amount of energy from nuclear sources? The EIA’s most recent data shows that in January, it was Illinois, with 8,845 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 April, 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 increased by 0.25% from December to January. The U.S. produced a total of 69,080 thousand megawatt-hours of nuclear energy in January 2024. Of the states with significant nuclear generation, 11 experienced a decrease in nuclear generation from month to month, and 15 experienced an increase. Texas nuclear power generation dropped 9.24% from December to January.

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

Nationally, nuclear generation decreased 2.53% from January 2023 to January 2024. 15 states experienced decreases within the year, while 13 experienced increased production. Nuclear generation in Ohio increased by 48.6% 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 Minnesota, where production fell by 68.6% since 2023.

New Hampshire produced the highest percentage of electricity from nuclear. In January, 58.2% of the state’s electricity came from nuclear energy.

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