Duane Arnold Energy Center Nuclear Restart

The 615 MW boiling water reactor at Palo, Iowa shut down in 2020 and was supposed to stay shut. NextEra Energy is putting it back into service by early 2029, and Google has already signed a 25-year power purchase agreement for the majority of its output.

Project Scope

The restart covers refurbishment of the reactor, turbine hall and balance of plant, plus the licensing work required to bring a decommissioning-track unit back under an operating license. The first visible milestone came when crews lifted the 200-ton main generator rotor out of the turbine hall and railed it to GE Vernova’s service center in Schenectady, New York for refurbishment. It’s the first major equipment operation at the site in more than a decade.

Approvals have been the pacing item. Linn County approved rezoning in January 2026 along with a host community agreement, and the Iowa Utilities Commission issued the certificate of public convenience, use and necessity on June 18, 2026, authorizing NextEra to construct, operate and maintain the restarted plant. Nuclear Regulatory Commission approvals remain outstanding, with inspections scheduled through 2026 and 2027. NextEra has not published a capital cost. Comparable restarts have run well over a billion dollars, but no figure has been confirmed for Duane Arnold and none should be assumed.

Why It Matters

Staffing tells you how serious this is. NextEra has already hired roughly 150 permanent employees, about 40 percent of them former Duane Arnold staff, and opened a training facility in Hiawatha, Iowa. Full operation calls for around 400 direct positions. Utilities don’t rehire a plant’s workforce speculatively.

The restart also sits inside a pattern worth tracking. Retired nuclear units are being reopened because hyperscale computing load arrived faster than new generation could be built, and the construction labor and specialty engineering required for a restart is a different animal from a greenfield reactor. Fewer trades, more inspection, more licensing, and a schedule set by the regulator rather than the contractor.

Project Team & Details