Energy Wonders of The World: Palo Verde Nuclear Generating Station In Arizona
- Jan 5
- 2 min read
In 1973, plans were announced to construct the first large-scale nuclear generating plant in the world that wasn't located near a large body of surface water. Having gone into service in 1986, it's now celebrating its 40-year anniversary, and in March of 2026, Arizona filed for a renewal through the late 2060s.
This was a breakthrough, a major coup of aggressive engineering, since nuclear plants require massive amounts of water to safely remove heat from uranium fission, the splitting of atoms, that generates steam heat needed to spin turbines and ultimately create electricity.
The Circular Economy Before It Was A Thing: Reusing Sewage Water
To work around its landlocked location, lacking access to any river, lake, or ocean, the 4.2 GW plant was designed to be cooled by reclaimed water from the city of Phoenix. It pioneered the use of sewage water long before the "circular economy" was a common concept, recycling over 20 billion gallons of treated wastewater annually to cool its three reactors.
While the project isn't without challenges today; including rising water costs as the nuclear generator must compete with semiconductor plants and many other interests across Phoenix for the water, it has demonstrated how to think above and beyond what seems possible. And, the Palo Verde Station remained the largest nuclear plant in the U.S. through 2024, when a larger 4.6 GW plant was put into service in Georgia, through extensions to the Vogtle plant which is now the largest.
Standing The Test Of Time: Continues To Influence Nuclear Development
Now, 40 years after, the "Palo Verde Model" remains a global example of how the seemingly impossible can be made possible. Its success has directly influenced arid regions proving that nuclear power can be decoupled from natural geography.
As we move further into 2026, others are embarking on similar workarounds, seeking to build nuclear generators that rely on dry-cooling (air) a path pioneered by Small-Modular-Reactors (SMRs) or desalinated ocean water to power a thirsty, electricity-driven world.
By deploying innovative approaches to tap municipal sewage water within a circular loop, Palo Verde proved geography no longer dictates where massive base-load power is placed. Similar to another Energy Wonder of the World, California's Geysers Geothermal Plant, which relies on a similar circular water loop supporting the water needs of the world's largest geothermal field.
As nuclear energy regains momentum, Palo Verde provides a roadmap for developing power plants far from natural water sources, including next-generation Small-Modular-Reactors (SMRs) which are expected to provide on-site power to data-centers, in water-scarce regions.
Palo Verde Nuclear Generating Station: Project Facts | |
Nameplate Capacity | 4.2 GW |
Completion Date | 1988 |
Total Project Costs | $6B; $17 Billion in 2026 inflation adj. dollars |
Development Time | 15 Years |
Annual Power | 31.4 TWh (equivalent to power needs of ~ 4M households, more than the total usage of 10 different states) |
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