US abandons solar project to restart 615MWe nuclear plant

The Duane Arnold Energy Center, a 615 MWe boiling water nuclear reactor in Iowa, ceased operations in 2020 after more than 45 years of service. Originally shut down due to economic reasons and damage from a 2020 derecho storm, the plant was never fully dismantled and has been maintained in a SAFSTOR state, preserving its core infrastructure. NextEra Energy, the plant’s majority owner, had initially planned to develop a solar project on the site, transferring the plant’s grid interconnection rights to this new venture. However, in 2025, NextEra formally requested the US Federal Energy Regulatory Commission to restore the original interconnection rights to prioritize restarting the nuclear facility instead. This shift reflects a broader national trend of reconsidering previously closed nuclear plants as part of efforts to expand carbon-free energy sources. NextEra is currently conducting a comprehensive engineering evaluation to assess the feasibility of recommissioning Duane Arnold, with initial assessments indicating the reactor remains in good condition and could potentially