Current state
| Status | Under construction |
| Design | Hualong One (PWR) |
| Net capacity | 1,090 MWe |
| Country | China |
| Vendor | CGN |
| Owner / operator | CGN |
| Construction start | 2021 |
| Original COD target | — |
| Current COD estimate | 2027 |
| Schedule slippage | — |
Notes
Verified 2026-09-22: hot functional testing completed 2026-04-28 (NucNet), following cold testing October 2025. Sister unit San'ao-1 connected to grid 2026-03-13 (NucNet). Grid connection 2027 per WNA table.
Milestone log
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2027 (source)
- 2025-10 — Cold functional testing completed at San'ao-2 (source)
- 2026-04-28 — Hot functional testing completed at San'ao-2, key step ahead of fuel loading (source)
The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.