United States - World Nuclear Performance Report
The USA has 94 operable reactors with a combined capacity of 97 GWe, the largest nuclear fleet of any single country.
In May 2025 President Donald Trump signed executive orders to increase US nuclear energy capacity to 400 GWe by 2050.
In August 2024 North Anna 1&2 were awarded 20-year subsequent licence renewals, extending their operating lifetimes to 80 years. Other subsequent licence renewals to 80 years of operation were granted in 2025 to: Monticello (in January 2025); Oconee 1-3 (in April 2025); and in July 2025 VC Summer 1 also received a licence to operate for up to 80 years. Earlier in September 2024 the US Nuclear Regulatory Commission (NRC) restored the extended licences for Turkey Point 3&4 (to 2052 and 2053, respectively) following a supplemental environmental review. The NRC had initially approved the extensions in 2019.
Increasing demand for clean and reliable power is driving progress towards the restart of reactors previously shut down. In September 2024 Constellation signed a 20-year power purchase agreement (PPA) with Microsoft that will enable the restart of Three Mile Island 1, five years after it was shut down. In the same month the US Department of Energy finalized a $1.52 billion loan guarantee for Holtec International’s project to recommission the single-unit Palisades plant. In June 2025, Meta signed a 20-year PPA with Constellation securing the long-term operation of Clinton 1.
Nuclear electricity production by age of reactor
