International edition
Nuclear News Network

Reporting the buildout, from mine to megawatt

Reactor TrackerChina

Zhangzhou-4

Hualong One · 1,126 MWe · Under construction · commercial operation est. 2029

Current state

StatusUnder construction
DesignHualong One (PWR)
Net capacity1,126 MWe
CountryChina
VendorCNNC
Owner / operatorCNNC & Guodian
Construction start2024
Original COD target—
Current COD estimate2029
Schedule slippage—

Notes

WNN Aug-19 module report traces to the same CNNC announcement as CINIE coverage — provenance recorded per operator-first rule. Units 1&2 commercial (Jan 2025 / Jan 2026); units 5&6 in preliminary works.

Milestone log

  • 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2029 (source)
  • 2026-08-19 — Third and final passive reactor-cavity water-injection tank module installed in the reactor building (CNNC) (source)
  • 2026-08-27 — Four internal-structure concrete modules hoisted over Aug 18-27 (loops 1-3 evaporator + pressurizer compartments; ~2,400 t total) (source)
  • 2026-09-01 — 424-t polar crane bridge set by 3,200-t crawler crane (2h05 operation); covered by People's Daily 8-hour live broadcast Sep 8 (source)

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

NNN coverage

On the Hualong One (HPR1000) design

Sources

  1. https://world-nuclear.org/nuclear-reactor-database/summary/report?report=gen&status=Under%20Construction
  2. https://pris.iaea.org/pris/
  3. https://world-nuclear-news.org/articles/passive-safety-module-installed-at-zhangzhou-4
  4. https://en.cinie.net/article/63792.html