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Last October, Google said it would bring an Iowa nuclear power plant back from the dead. Now, the facility’s owner, NextEra Energy, has received a $1.9 billion loan from the U.S. Department of Energy to finance the refurbishment.
The sizable loan is the second of its kind, suggesting that the Trump administration views revived nuclear power as a key source of electricity for tech companies seeking to power their AI data centers. Last year, the Department of Energy extended a $1 billion loan to Constellation Energy to restart a reactor at Three Mile Island.
James Danly, Deputy Secretary of Energy, said that the Iowa power plant’s restart in 2029 will “drive down electricity costs,” though he did not explain how. Just 50 megawatts will be set aside for the local power cooperative, NextEra CEO John Ketchum said during an earnings call last year. That capacity would cover 18% of Iowa’s demand growth since 2021, the year before ChatGPT was released.
Google is reportedly looking to build up to six data centers near the Duane Arnold Energy Center, which hasn’t operated since 2020 when an intense rainstorm damaged the power plant. Rather than repair it, NextEra decided to mothball it. At the time, cheap natural gas was flooding the market, making nuclear power economically unappealing.
A lot has changed in the last six years, though. After decades of little growth in demand, the sudden rise of AI coupled with broader electrification of the economy meant that utilities and power providers were suddenly scrambling to find new generating sources of electricity. New data centers are expected to nearly triple the sector’s electricity demand by 2035.
Shuttered nuclear power plants are becoming one of the tech industry’s favorite choices to quickly provide clean, firm power.
Microsoft signed a deal with Constellation Energy two years ago to restart a reactor at Three Mile Island that last operated in 2019. The reactor is scheduled to restart in 2028 and generate 835 megawatts.
Another facility in Illinois, Constellation Energy’s Clinton Clean Energy Center, was in danger of closing down before its parent found a new customer in Meta, which is buying all of the clean energy attributes from the 1.1 gigawatt power plant. The arrangement will see Clinton sending its electrons to the local grid, while Meta will use the certificates to offset emissions it is producing elsewhere. The tech giant’s Hyperion AI data center, for example, will need 10 natural gas power plants to operate. If completed, the data center will consume more electricity than all of South Dakota.
Duane Arnold is smaller, but in the process of refurbishment, NextEra will squeeze an additional 14 megawatts from the facility, bringing the total to 615 megawatts.
Altogether, the three power plants represent the lowest hanging fruit in the U.S. There might be one or two more, according to a report from UtilityDive, though those candidates, including San Onofre in California, have been shuttered for longer and would require more work to bring back online.
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