Current state
| Status | Under construction |
| Design | VVER-1200 (PWR) |
| Net capacity | 1,110 MWe |
| Country | China |
| Vendor | Rosatom |
| Owner / operator | CNNC & Datang |
| Construction start | 2022 |
| Original COD target | — |
| Current COD estimate | 2028 |
| Schedule slippage | — |
Notes
Verified 2026-09-22: RPV installed December 2024 (WNN/Rosatom); containment dome hoisted June 2024; modular construction completed December 2025 (WNN/CNNC). Construction started May 2022; grid connection 2028 per WNA table.
Milestone log
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2028 (source)
- 2024-12-18 — Reactor vessel installed in design position at Xudabao 4 (source)
- 2025-12-01 — Phase II modular construction completed (final passive water tank module installed in unit 4) (source)
The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.
NNN coverage
On the VVER-1200 design
- Akkuyu 1 completes primary-circuit hydraulic tests 2026-10-10
- The 6 nuclear stories that mattered this week 2026-09-19
- Vietnam picks Rosatom for Ninh Thuan 1, Korea closes on Ninh Thuan 2 2026-09-13
- The 8 nuclear stories that mattered this week 2026-09-05
- Rosatom signs EPC contract for Kazakhstan's first nuclear plant 2026-09-04
- The 6 nuclear stories that mattered this week 2026-08-29
Sources
- https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide
- https://pris.iaea.org/pris/
- https://www.world-nuclear-news.org/articles/reactor-vessel-installed-at-xudabao-4
- https://www.world-nuclear-news.org/articles/modular-construction-completed-at-xudabao-vver-1200s