Peach Bottom 1 was a 200 MWt high-temperature gas-cooled prototype that ran from 1967 to 1974. It has been in SAFSTOR since 1978 with fuel removed to Idaho, and final decommissioning is deferred until operating Units 2 and 3 shut; the NRC estimates closure in 2074.
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Current state
| Status | SAFSTOR |
| Country | United States |
| Location | Delta, Pennsylvania |
| Site | Peach Bottom Atomic Power Station |
| Units | Unit 1 |
| Unit count | 1 |
| Reactor types | HTGR |
| Owner / licensee | Constellation Energy Generation |
| Strategy | Deferred (SAFSTOR) |
| Final shutdown | 1974-10-31 |
| Target completion | 2074 |
| Spent fuel | All spent fuel shipped to a DOE facility in Idaho; pool drained and decontaminated. |
| Notable issue | NRC exemption allows completion beyond 60 years of shutdown. |
Timeline
- 1967-06 — Peach Bottom 1 began operating. (source)
- 1974-10-31 — The reactor shut down for the final time. (source)
- 1978-02 — Decommissioning activities placing it in SAFSTOR were completed. (source)
- 2023 — The licensee requested an alternative schedule to finish decommissioning beyond 60 years. (source)
The timeline is append-only: corrections are added as new entries. Stated targets appear in the current-state table, never as milestones.
Related sites
- Barsebäck Nuclear Power Plant Active dismantling · Sweden
- Berkeley (Magnox) SAFSTOR · United Kingdom
- Bradwell (Magnox) SAFSTOR · United Kingdom
- Crystal River Unit 3 Site restoration · United States
- Dresden Unit 1 SAFSTOR · United States
- Duane Arnold Energy Center Restart planned · United States
- Dungeness B Fuel removal · United Kingdom
- Fermi Unit 1 (Enrico Fermi Atomic Power Plant) SAFSTOR · United States
See all 72 sites in the Nuclear Decommissioning Tracker →
Sources
- Peach Bottom - Unit 1 — U.S. NRC (primary), checked 2026-10-11
- Locations of Power Reactor Sites Undergoing Decommissioning — U.S. NRC (primary), checked 2026-10-11