Current state

Status	Under construction
Design	VVER-1200 (PWR)
Net capacity	1,110 MWe
Country	China
Vendor	Rosatom
Owner / operator	CNNC (JNPC)
Construction start	2021-05-19
Original COD target	—
Current COD estimate	2026
Schedule slippage	—

Notes

Fuel-loading date conflict flagged 2026-09-28: NucNet reported loading *completed* 2026-08-03 while CNNC via WNN/NEI says the *first* assembly entered the core 2026-08-12 (fuel supplied by TVEL/NZKhK under the units 7&8 contract) — treat Aug-12 as start, completion date unconfirmed. Unit 7 COD 2026 requires criticality + grid + tests still ahead; at risk — watch.

Milestone log

2021-05-19 — Construction start (first concrete) (source)
2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2026 (source)
2026-08-03 — First fuel loading completed; criticality and grid connection to follow (source)

The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.

NNN coverage

About Tianwan-7

Tianwan 7 begins loading its first nuclear fuel 2026-08-13
Haiyang-3 completes hot functional testing 2026-08-17
The 6 nuclear stories that mattered this week 2026-08-16
Tianwan 8 completes cold functional tests 2026-08-10

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