Arizona’s Palo Verde Nuclear Generating Station could be powering homes until 2067. Arizona Public Service filed a Notice of Intent on March 13, 2026, to apply for a second license renewal in late 2027. If approved, all three of the plant’s units would operate for 80 years total.
Palo Verde’s three units first came online between 1986 and 1988. Their current licenses expire between 2045 and 2047. A second renewal would push those dates to 2065, 2066, and 2067, respectively. Each unit has a different expiration date because they weren’t all built at the same time.
Nuclear plants start with a 40-year license. A first renewal adds 20 more years. A second renewal adds another 20. Ten U.S. stations have already received 80-year licenses. Three more are currently under NRC review. Palo Verde would join that group if its application moves forward.
The Nuclear Regulatory Commission will review the application after it’s submitted. The NRC will look at safety plans, aging management strategies, and environmental impact. Public participation is also part of the process.
Palo Verde is the largest power generator in the western United States. It produces 4,200 megawatts of electricity. That’s enough to power around 4 million homes. It serves customers in Arizona, New Mexico, southern California, and west Texas.
The plant has one unique feature. It’s the only U.S. nuclear plant not located near a natural body of water. Instead, it uses recycled municipal wastewater from Phoenix for cooling.
Arizona’s energy needs are also growing. APS is reportedly working with Salt River Project and Tucson Electric Power to explore new nuclear sites. The three utilities are said to have applied for a U.S. Department of Energy grant in 2025 to fund site evaluations, with retired coal plant locations among the sites being considered. Both small modular reactors and large reactors are reportedly being considered. Nuclear energy is widely recognized as offering significant greenhouse gas reductions compared to continued reliance on fossil fuels.
Nuclear energy is seen as a key part of the country’s clean energy future. Extending Palo Verde’s life would be a cheaper option than building a brand-new plant from scratch. The plant currently employs an estimated thousands of full-time workers and contributes roughly billions of dollars to local economies. The National Association of Manufacturers has emphasized that extending existing plant lifespans supports U.S. manufacturing competitiveness.
References
- https://nam.org/arizona-nuclear-plant-seeks-two-more-decades-of-operation-36037/
- https://www.world-nuclear-news.org/articles/aps-to-seek-fresh-palo-verde-life-extension
- https://www.power-eng.com/nuclear/aps-seeks-license-extension-for-palo-verde-nuclear-plant/
- https://www.aps.com/en/About/Our-Company/Newsroom/Articles/APS_Seeks_to_Renew_Palo_Verde_Generating_Station_Licensing
- https://www.exchangemonitor.com/arizona-public-service-seeks-another-license-renewal-for-palo-verde/
- https://www.rtoinsider.com/128183-aps-seek-extension-palo-verde-nuclear-through-2067/
- https://www.nucnet.org/news/aps-to-seek-licence-renewal-for-all-three-units-at-palo-verde-nuclear-station-3-4-2026
