Nuclear energy production in the U.S. 2021, by key state
Illinois is the leading U.S. state in nuclear power production. In 2021, this state of the Northern Midwest generated almost 97 terawatt-hours of nuclear energy. Pennsylvania followed, with around 75.9 terawatt-hours of electricity generated by nuclear power plants. The share of nuclear energy in the electricity generation of the U.S. was roughly 19 percent that year.
