The Nuclear Regulatory Commission has taken another procedural step toward the possible restart of the Duane Arnold nuclear power plant in Palo, Iowa, issuing a draft environmental assessment and a preliminary finding of no significant impact for the project on July 30.
Plant owner NextEra Energy is working to bring the 615-megawatt reactor back into service as early as 2029, following a 2020 shutdown. The NRC staff reviewed a range of potential effects tied to the restart, covering land use, water resources, ecological and cultural resources, socioeconomic conditions, and the uranium fuel cycle, and determined that none of the reviewed categories showed significant impact. Regulators also concluded that projected climate effects would not change those findings.
Because of that preliminary determination, the agency does not plan to prepare a lengthier environmental impact statement and instead expects to finalize the assessment with a finding of no significant impact this fall. The public comment period on the draft runs through September 2, with electronic submissions accepted through the federal rulemaking website under docket ID NRC-2026-1719.
The U.S. Department of Energy's Office of Energy Dominance Financing is participating in the review as a cooperating agency, reflecting the department's consideration of financial assistance for the restart. The Duane Arnold review follows a similar preliminary environmental determination the NRC issued in June for the restart of Constellation's Crane Clean Energy Center in Pennsylvania, part of a broader industry trend of bringing previously shuttered reactors back onto the grid as electricity demand climbs.
Source: Nuclear News (American Nuclear Society) -- https://www.ans.org/news/2026-08-04/article-8269/nrc-issues-draft-eafonsi-for-duane-arnold-restart/