PALO, IOWA, Sept. 10 (DC Times Online) — The U.S. Department of Energy and NextEra Energy have closed a loan of up to $1.9 billion to help restart the Duane Arnold Energy Center in Iowa, a project that could return a 615-megawatt nuclear unit to the regional grid by early 2029.
The financing was announced in Washington, D.C. The plant, in Linn County, stopped operating in 2020 after about 45 years of service. NextEra owns and operates the facility.
The deal links federal support, a planned nuclear restart and growing electricity demand from technology infrastructure. Google, through parent company Alphabet, has signed a 25-year power purchase agreement with NextEra for electricity from the plant.
What the loan supports
The financing comes through the Energy Department’s Office of Energy Dominance Financing, formerly known as the Loan Programs Office. The commitment is conditional and has reached financial close, according to the Energy Department and NextEra.
The loan amount is “up to” $1.9 billion. The public information provided for the announcement does not specify the loan’s interest rate, repayment terms, federal risk protections or the project’s total restart cost.
NextEra has not disclosed the total cost of bringing the plant back into service. The company has set a target of early 2029, or the first quarter of that year, but the schedule depends on approvals from the U.S. Nuclear Regulatory Commission.
A federal loan does not by itself authorize a nuclear plant to operate. The NRC must approve the licensing actions needed for the restart. The available announcement materials do not provide a full schedule for those approvals.
How much power could return to the grid?
Duane Arnold is a single-unit boiling-water reactor with a nameplate capacity of 615 megawatts. Nameplate capacity describes the maximum output a power plant is designed to produce; it is not the same as the amount of electricity the plant will generate at all times.
The Energy Department and NextEra say a restarted unit would provide 615 megawatts of baseload power and could supply electricity equivalent to the needs of nearly 500,000 homes. Those are projected figures. The materials available do not include an independent grid study or a post-restart generation forecast.
The plant’s output would add a large source of steady electricity to the regional system. It could also help meet demand from data centers and other large electricity users. But the project’s actual effect on grid reliability, prices and power flows will depend on the plant’s operating performance, regional demand and how grid operators dispatch other resources.
The available information does not establish that Google will receive 70% of the plant’s total output. That figure appears in one secondary account but is not included in the other announcement materials.
Why Google is part of the plan
Google and NextEra announced their long-term power purchase agreement in October 2025, alongside NextEra’s plan to pursue the restart. A power purchase agreement is a contract under which a buyer agrees to purchase electricity from a project for a set period.
For Google, the arrangement is intended to support electricity needs associated with its expanding cloud-computing and artificial-intelligence infrastructure in Iowa, according to company materials. For NextEra, the agreement provides a long-term customer for power from the planned restart.
The contract does not mean the plant is already producing electricity for Google. The reactor has been offline since 2020, and the restart remains subject to nuclear licensing approvals and completion of the work needed to return the facility to service.
What the project could mean for Iowa
NextEra estimates that the restart could produce more than $9 billion in economic benefits for Iowa over 25 years and about $75 million in tax revenue over the project’s life. Those figures are company estimates, not independent economic findings.
The company has also described construction and permanent operating jobs tied to the project. The supplied announcement materials report differing totals for operating employment, so a single verified figure cannot be stated here.
The plant is described by the Energy Department and NextEra as Iowa’s only nuclear power station. If the restart succeeds, it would restore a large carbon-free generating source after the state’s nuclear unit was closed. The project’s announced capacity, however, should not be treated as confirmed generation until the reactor has been relicensed, restarted and operating on the grid.
For now, the key milestones are regulatory approval, completion of the restart work and the plant’s return to commercial operation. NextEra’s target is early 2029, but the NRC approval process remains an important condition of that timeline.
