goingcritical:tianwan-7China · Power reactor

Tianwan-7

Developer: CNNC

Site: Lianyungang, Jiangsu

Status: Under construction — target criticality 2026 (confidence: medium) target

Summary:

Set to be the first VVER-1200 reactor to enter service in China

CNNC states commercial operation scheduled for 2026; hot functional tests completed 2025-12-30 and first fuel delivered January 2026, but fuel loading not yet reported as of 2026-07-10

Details

DesignVVER-1200
Capacity1171 MWe

Milestone history

  1. Announced —
  2. Construction start May 19, 2021
  3. Fuel load —
  4. First criticality target 2026
  5. Grid connection —
  6. Commercial operation —

References

  1. IAEA PRIS, Tianwan-7
  2. WNN, Key commissioning tests completed at Tianwan 7
  3. WNN, First VVER-1200 fuel delivered to China for Tianwan 7