Kewaunee, a single-unit Westinghouse PWR on Lake Michigan, closed in May 2013 and sat in SAFSTOR until EnergySolutions bought it from Dominion in 2022 to dismantle it. EnergySolutions and WEC Energy are now also exploring new reactors at the site and told the NRC in January 2026 they expect to file a licensing application by June 2028.
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Current state
| Status | Active dismantling |
| Country | United States |
| Location | Carlton, Kewaunee County, Wisconsin |
| Site | Kewaunee Power Station |
| Units | Unit 1 |
| Unit count | 1 |
| Reactor types | PWR |
| Owner / licensee | Kewaunee Solutions (EnergySolutions) |
| Decommissioning contractor | EnergySolutions |
| Strategy | Mixed |
| Final shutdown | 2013-05-07 |
| Decommissioning start | 2022 |
| Target completion | 2055 |
| Spent fuel | All spent fuel moved to on-site ISFSI in 2017; pool racks removed 2018. |
| Notable issue | Proposed new-build nuclear at the decommissioning site (EnergySolutions/WEC). |
Notes
Strategy "Mixed": SAFSTOR 2013-2022, then DECON under EnergySolutions. NRC estimated closure 2055 including ISFSI.
Timeline
- 2013-05-07 — Dominion permanently ceased power operations at Kewaunee. (source)
- 2017 — Dominion completed transfer of spent fuel to the on-site ISFSI. (source)
- 2022 — EnergySolutions acquired the site and began decommissioning and dismantlement. (source)
- 2025-05 — EnergySolutions and WEC Energy Group announced plans to explore new nuclear generation at Kewaunee. (source)
- 2026-01-15 — EnergySolutions filed a notice of intent with the NRC for a new-generation licensing application by June 2028. (source)
The timeline is append-only: corrections are added as new entries. Stated targets appear in the current-state table, never as milestones.
NNN coverage
About EnergySolutions
Related sites
- Brennilis (Monts d'Arrée EL-4) Active dismantling · France
- Crystal River Unit 3 Site restoration · United States
- Dresden Unit 1 SAFSTOR · United States
- Duane Arnold Energy Center Restart planned · United States
- Fermi Unit 1 (Enrico Fermi Atomic Power Plant) SAFSTOR · United States
- Fort Calhoun Station Site restoration · United States
- GE Vallecitos (VBWR and EVESR) Active dismantling · United States
- Humboldt Bay Power Plant Unit 3 License terminated · United States
See all 72 sites in the Nuclear Decommissioning Tracker →
Sources
- Kewaunee Power Station — U.S. NRC (primary), checked 2026-10-11
- EnergySolutions confirms plans for new nuclear at Kewaunee — ANS Nuclear Newswire, checked 2026-10-11
- Locations of Power Reactor Sites Undergoing Decommissioning — U.S. NRC (primary), checked 2026-10-11