DOE closes $1.9 billion loan to NextEra for Duane Arnold nuclear restart in Iowa

The U.S. Department of Energy's Office of Energy Dominance Financing closed a loan of up to $1.9 billion to NextEra Energy on 8 September 2026, providing what the company described as the final piece of financing needed to restart the 615 MW Duane Arnold Energy Center in Linn County, Iowa^[1]. The plant, Iowa's only nuclear facility, has been offline since 2020.

The financing structure

The loan was announced as a combined conditional commitment and financial close, issued through DOE's Office of Energy Dominance Financing - the rebranded successor to the Loan Programs Office^[1]. NextEra has not disclosed the total restart cost, but company leaders confirmed on 8 September that it will be a multi-billion-dollar project overall. The DOE loan is structured to cover a portion of that outlay, with the remainder coming from NextEra's own capital.

Deputy Secretary of Energy James Danly attended a press conference at the plant site in Palo to announce the close, framing the loan as part of the Trump administration's goal to quadruple U.S. nuclear capacity by 2050.

Google's role as anchor offtake

The restart is anchored by a 25-year power purchase agreement with Alphabet's Google, announced in October 2025, under which Google will purchase electricity from the plant as a 24/7 carbon-free energy source for its cloud and AI infrastructure in Iowa^[1]. The PPA provided the commercial foundation that made the DOE loan viable; without a creditworthy long-term buyer, a restart of this scale would face significant financing risk.

The arrangement follows a pattern Google has pursued across multiple nuclear deals:

• A 25-year agreement with NextEra for Duane Arnold (October 2025)
• A deal with Kairos Power and the Tennessee Valley Authority (August 2025)
• A PPA with fusion startup Commonwealth Fusion Systems (June 2025)

Regulatory hurdles still ahead

The loan close does not authorize Duane Arnold to resume commercial generation. Two significant approval tracks remain open:

• NRC licensing: The Nuclear Regulatory Commission has established a Duane Arnold Restart Panel to coordinate licensing reviews and inspections. The NRC approved the transfer of the plant license to NextEra Energy Duane Arnold in March 2026, but separate restart-related licensing actions are still underway. An NRC team member indicated in April 2026 that license approval could come as early as January 2028 if inspections continue without material findings.
• State certificate challenge: The Iowa Utilities Commission issued a certificate of public convenience, use and necessity on 18 June 2026, authorizing construction and operation. A lawsuit is challenging that certificate; NextEra's leadership said on 8 September they expect to reach a successful resolution.

NextEra is targeting commercial operation no later than the first quarter of 2029, subject to regulatory approvals. Construction and refurbishment work is already underway on site.

Economic projections

A study cited by NextEra estimates the restart will generate more than $9 billion in economic benefits for Iowa over 25 years, support approximately 400 permanent operational positions, and produce around $75 million in tax revenue. About 40% of the staff hired so far are former Duane Arnold employees who worked at the plant during its original operating life between 1975 and 2020.

The NRC's environmental review - covering site modifications and groundwater resources - is still in progress. That review's outcome, alongside the pace of the remaining licensing inspections, will determine whether NextEra's late-2028 to early-2029 target holds.