goingcritical:sanao-1China · Power reactor

San'ao-1

Developer: CGN

Site: Wenzhou, Zhejiang

Status: Critical since February 14, 2026 critical

Summary:

First of six planned Hualong One units at San'ao and the first Hualong One in operation in the Yangtze River Delta

Details

DesignHPR-1000 (Hualong One)
Capacity1117 MWe

Milestone history

  1. Announced —
  2. Construction start December 31, 2020
  3. Fuel load December 24, 2025
  4. First criticality February 14, 2026
  5. Grid connection March 12, 2026
  6. Commercial operation April 29, 2026

References

  1. IAEA PRIS, San'ao-1
  2. WNN, Fuel loading under way at new Chinese units (24 December 2025)
  3. WNN, First unit at San'ao plant starts up
  4. WNN, First unit at San'ao enters commercial operation (29 April 2026)