Current state
| Status | Under construction |
| Design | Hualong One (PWR) |
| Net capacity | 1,090 MWe |
| Country | China |
| Vendor | CGN |
| Owner / operator | CGN |
| Construction start | 2025-11-18 |
| Original COD target | — |
| Current COD estimate | 2030 |
| Schedule slippage | — |
Notes
Phase 2 (units 3&4) approved by China's State Council in August 2024. First concrete 2025-11-18 per WNN and NEI (NNSA permit 2025-11-13). Six Hualong One units planned; San'ao is CGN-led (Zhejiang Cangnan Nuclear Power; Geely holds 2%). COD 2030 per WNA table.
Milestone log
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2030 (source)
- 2025-11-13 — China's NNSA issued construction permits for San'ao units 3 and 4 after on-site inspection of nuclear island preparations (source)
- 2025-11-18 — First concrete poured for the nuclear island of unit 3 (~8,820 cubic metre pour), marking official start of construction (source)
The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.