Google AI Push Wins $1.9 Billion Loan to Restart Iowa Nuclear Plant
NextEra secured a $1.9 billion U.S. loan to restart Iowa's 615 MW Duane Arnold nuclear plant by 2029, supporting up to six Google AI data centers nearby.
Summary
NextEra Energy secured a $1.9 billion U.S. Department of Energy loan to refurbish Iowa’s Duane Arnold Energy Center, which Google committed to revive in October 2025. Damaged by a rainstorm and mothballed amid cheap natural gas in 2020, the plant is targeted to restart in 2029. NextEra will add 14 megawatts for 615 megawatts total, while CEO John Ketchum says 50 megawatts will serve the local power cooperative, covering 18% of Iowa’s demand growth since 2021. Google is reportedly considering up to six nearby data centers. Deputy Energy Secretary James Danly says the restart will lower electricity costs but has not explained how.
The Trump administration previously lent Constellation Energy $1 billion to restart Three Mile Island’s 835 megawatt reactor, closed since 2019, by 2028 under a Microsoft agreement. Meta buys all clean-energy attributes from Constellation’s 1.1 gigawatt Clinton plant, although its Hyperion AI data center could require 10 natural gas plants and consume more electricity than South Dakota. Data-center electricity demand could nearly triple by 2035. Duane Arnold, Three Mile Island and Clinton are the easiest U.S. nuclear opportunities; perhaps one or two harder restart candidates remain, including California’s San Onofre.
Positives
- $1.9 billion in federal financing gives NextEra Energy funding to return Duane Arnold to service by 2029.
- 14 additional megawatts will raise Duane Arnold’s generating capacity to 615 megawatts.
- 50 megawatts reserved for the local cooperative could cover 18% of Iowa’s electricity-demand growth since 2021.
- 835 megawatts from Three Mile Island are scheduled to return in 2028 through Constellation Energy’s Microsoft agreement.
- 1.1 gigawatts from Clinton remain operational after Meta agreed to buy the plant’s clean-energy attributes.
Risks & concerns
- Only 50 of Duane Arnold’s 615 megawatts will be reserved for the local power cooperative.
- James Danly offered no explanation for his claim that restarting Duane Arnold will reduce electricity costs.
- Google’s reported plan for up to six nearby data centers could place substantial new demand on Iowa’s power system.
- Hyperion could require 10 natural gas plants and consume more electricity than South Dakota despite Meta’s nuclear certificates.
- Perhaps one or two additional U.S. restart candidates remain, with San Onofre and other long-closed plants requiring more work.
