Energy Department closes $1.9B loan for Google’s Iowa nuclear restart

The US Department of Energy closed a loan of up to $1.9 billion to NextEra Energy on September 8, financing the restart of the Duane Arnold Energy Center in Linn County, Iowa. The 615 megawatt plant is the state’s only nuclear facility, and it hasn’t produced electricity since 2020. Google is the customer waiting at the other end of it.

The money came through the department’s Office of Energy Dominance Financing, which reached a conditional commitment and financial close in one step rather than two. NextEra says the milestone moves it closer to restoring the plant. Its own target, set out in a September 8 release, is a restart no later than the first quarter of 2029.

Returning 615 megawatts of reliable baseload generation will drive down electricity costs, while supporting thousands of American jobs.

James P. Danly, US Deputy Secretary of Energy, via the Department of Energy

Danly didn’t explain the mechanism by which a refurbished reactor lowers bills, and DOE’s release doesn’t either. Still, the commercial structure behind it is clearer. NextEra and Google signed a 25-year power purchase agreement for Duane Arnold’s output last October, with Central Iowa Power Cooperative buying the remaining portion on the same terms.

That agreement also reshaped who owns the plant, because it came bundled with an ownership change. NextEra has signed definitive agreements to acquire CIPCO and Corn Belt Power Cooperative’s combined 30% interest, which takes its own stake to 100%. Google, for its part, is buying the power for its cloud and AI infrastructure in Iowa.

Item	Figure	Stated by
Loan size	Up to $1.9 billion	DOE
Capacity	615 MW	DOE
Homes powered	Nearly 500,000	DOE
Construction jobs	Nearly 1,500	DOE
Operations jobs	More than 450	DOE
Iowa economic benefit over 25 years	More than $9 billion	NextEra
Tax revenue over project life	About $75 million	NextEra
Target restart	No later than Q1 2029	NextEra

Those numbers come from two releases published the same day, and they don’t quite agree. DOE counts more than 450 jobs during operations, while NextEra’s release says more than 400 permanent roles. The gap is small, but it’s worth reading these as estimates rather than commitments.

The plant shut in 2020 after a storm damaged it, and Utility Dive notes its retirement was already planned on cost grounds. Engadget reports the August 2020 storm brought gusts up to 140 mph that knocked down the cooling towers. Cheap natural gas made repairing it look uneconomic at the time, according to TechCrunch.

What changed is demand. AI data centres have made firm, always-on generation valuable again, which is why mothballed reactors keep finding customers. We’ve written before about how the compute shortage moved from chips to power, and this loan is that shift landing on a federal balance sheet.

The counter-reading is about who pays. Utility Dive asked DOE how the loan squares with a ratepayer protection pledge covering large data centre projects, and reports the department didn’t immediately reply. TechCrunch reports NextEra chief executive John Ketchum told an earnings call last year that just 50 megawatts is set aside for the local cooperative.

Even so, federal appetite isn’t in doubt. DOE says its financing office has now backed three nuclear restarts, and TechCrunch reports a $1 billion loan to Constellation Energy last year for a Three Mile Island reactor. Public capital is doing here what private guarantees do elsewhere, much as when Nvidia guaranteed its own chips to unlock $500B in financing.

What is still open is the regulator, and that is the gate the schedule now runs through. The restart needs licensing approval from the Nuclear Regulatory Commission, and NextEra says the Iowa Utilities Commission issued its construction and operation certificate in June. TechCrunch also reports Google is looking to build up to six data centres near the plant, which is the number to watch: it says whether 615 megawatts was the floor or the ceiling.