The Nuclear Regulatory Commission has released a draft environmental assessment finding no significant environmental impacts from restarting the Duane Arnold nuclear plant in Palo, Iowa. NextEra Energy, which owns the 615-megawatt facility, is working toward bringing the plant back online as early as 2029.
The NRC posted the draft assessment and a preliminary finding of no significant impact this week, with a formal notice appearing in the Federal Register. Agency staff reviewed how a restart could affect land use, air quality, water resources, protected ecological and cultural resources, socioeconomic conditions, and waste management, and concluded that none of those areas would see significant harm. The U.S. Department of Energy's Office of Energy Dominance Financing is participating in the review as a cooperating agency, since the department is weighing financial assistance for the restart project.
Because of this preliminary finding, the NRC expects it will not need to prepare a longer environmental impact statement. The public can submit comments on the draft assessment through September 2, either electronically through the federal rulemaking website or by mail, referencing docket NRC-2026-1719. After the comment period closes, the agency will finalize its environmental review and issue a final determination, expected this fall.
The Duane Arnold review follows a similar preliminary environmental decision the NRC issued two months ago for Constellation's Crane plant in Pennsylvania, formerly known as Three Mile Island Unit 1. Both projects reflect a broader push by utilities to bring shuttered reactors back into service as electricity demand climbs across the country, driven in part by data center and manufacturing growth.
Source: Nuclear Newswire / American Nuclear Society -- https://www.ans.org/news/2026-08-04/article-8269/nrc-issues-draft-eafonsi-for-duane-arnold-restart/