NRC outlines complex path to restart Iowa’s Duane Arnold nuclear plant

The Nuclear Regulatory Commission laid out just how much work still sat between Duane Arnold and a restart when it briefed the public in Cedar Rapids on April 16. The 615-MW boiling water reactor in Palo, Iowa, about 8 miles northwest of Cedar Rapids, had not run since August 10, 2020, when a derecho damaged non-safety portions of the plant, including the cooling towers. Now, NextEra Energy Duane Arnold, LLC, was trying to push the site back toward operation under a renewed license that runs through February 21, 2034.

The NRC said the meeting was a hybrid public session and question-and-answer event on the Duane Arnold Energy Center Restart Panel’s work, with attendance available in person, by webinar or by phone. The agency also made clear it was not actively soliciting comments for regulatory decisions at that session. Even so, the hearing showed that this is not a simple corporate restart plan. It is a layered regulatory process that runs through licensing, inspections, oversight, security, preparedness, environmental review and decommissioning expertise inside the agency.

NextEra formally notified the NRC on January 23, 2025 that it intended to pursue a regulatory path for potential restart and sought an exemption from 10 CFR 50.82(a)(2). Since then, the company has been working through requests to restore conditions in the operating license, return technical specifications, address emergency preparedness and revise the facility security plan. The NRC said the project was undergoing National Environmental Policy Act review, and a March 2025 meeting summary said NextEra told regulators it was restarting to help meet growing energy demand while a comprehensive evaluation of plant systems was underway.

The economics are now part of the case, too. In October 2025, NextEra and Google announced a collaboration centered on the restart, with Google agreeing to buy power from Duane Arnold under a 25-year agreement once the plant was operational. That deal tied the reactor’s future to Iowa’s fast-growing data-center load and gave the restart a commercial backstop that many stranded reactors never get.

Local approvals have moved as well. In March 2026, the Linn County Board of Supervisors approved rezoning that could help clear a local path for the restart, even as residents around Palo kept pressing concerns about waste storage and water use. The NRC hearing made one thing plain: Duane Arnold is now a live test of whether a shuttered U.S. reactor can really come back, and every other utility watching the case will be measuring its own odds against the outcome in Iowa.