Current state
| Status | Commercial operation |
| Design | Hualong One (PWR) |
| Net capacity | 1,090 MWe |
| Country | China |
| Vendor | CNNC |
| Owner / operator | Huaneng & CNNC |
| Construction start | 2021-03-31 |
| Original COD target | — |
| Current COD estimate | 2026 |
| Schedule slippage | — |
Notes
Commercial operation 2026-09-17 per WNN and NucNet; about 5.4 years from first concrete (2021-03-31). Twin unit Changjiang-4 in pre-commissioning, both phase II units scheduled fully operational early 2027.
Milestone log
- 2021-03-31 — Construction start (first concrete) (source)
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2026 (source)
- 2026-08-01 — Grid connection and first electricity supply reported (source)
- 2026-09-17 — Entered commercial operation (third unit at Changjiang site) (source)
The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.
NNN coverage
About Changjiang-3
- NNN Daily Brief — July 14, 2026 2026-07-14
At Changjiang Nuclear Power Plant
On the Hualong One (HPR1000) design
Sources
- https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide
- https://pris.iaea.org/pris/
- https://pris.iaea.org/PRIS/CountryStatistics/CountryDetails.aspx?current=CN
- https://www.nucnet.org/news/china-s-changjiang-3-nuclear-power-plant-connected-to-grid-8-1-2026
- https://www.world-nuclear-news.org/articles/third-unit-at-changjiang-site-commissioned
- https://www.nucnet.org/news/china-s-chiangjiang-3-hualong-one-reactor-begins-commercial-operation-9-5-2026