Track every SMR and advanced reactor from ground-breaking to commercial operation. The global deployment race — who gets to first power?
| Reactor | Developer | Location | Capacity (MW) | Milestone | Date | Status |
|---|---|---|---|---|---|---|
| HTR-PM | CNNC / Tsinghua University | Shidaowan, Rongcheng, Shandong, China | 210 | Commercial operation | 2023-12-01 | operational |
| Akademik Lomonosov (KLT-40S) | Rosatom | Pevek, Chukotka, Russia | 70 | Commercial operation | 2020-05-22 | operational |
| Linglong One / ACP100 | CNNC | Changjiang, Hainan, China | 125 | Commercial operation | 2026-06-01 | under construction |
| BWRX-300 (Darlington Unit 1) | GE Hitachi / OPG | Darlington, Ontario, Canada | 300 | Construction started | 2025-05-01 | under construction |
| Natrium | TerraPower | Kemmerer, WY, USA | 345 | Construction permit issued | 2025-12-15 | under construction |
| Hermes | Kairos Power | Oak Ridge, TN, USA | Demo | First safety-related concrete pour | 2025-05-07 | under construction |
| TRISO-X TX-1 Fuel Facility | X-energy / TRISO-X | Oak Ridge, TN, USA | Demo | NRC fuel license approved | 2026-02-01 | under construction |
| Kaleidos | Radiant Industries | Idaho National Laboratory, ID, USA | 1 | Criticality test planned | 2026-07-04 | permitted |
| Aurora Powerhouse | Oklo Inc. | Idaho National Laboratory, ID, USA | 15 | Ground broken | 2025-09-01 | ground broken |
| Rolls-Royce SMR | Rolls-Royce SMR Ltd | Wylfa, Anglesey, Wales, UK | 470 | Site selected | 2025-11-01 | planned |
| Crane Clean Energy Center (TMI Unit 1) | Constellation Energy | Middletown, PA, USA | 835 | Restart preparation | 2025-11-01 | under construction |
| Palisades Nuclear Generating Station | Holtec International | Covert, MI, USA | 800 | Restart preparation | 2025-01-01 | under construction |
| PRECURSOR (Newcleo) | Newcleo | Italy | Demo | Non-nuclear prototype | 2026-12-01 | under construction |
| SEALER-One | Blykalla | Oskarshamn, Sweden | 55 | Test facility Phase 1 complete | 2025-06-01 | planned |
| Xe-100 (Dow Seadrift) | X-energy | Seadrift, TX, USA | 320 | Construction permit application accepted | 2025-05-01 | permitted |