Current state
| Status | Under construction |
| Design | APR1400 (PWR) |
| Net capacity | 1,340 MWe |
| Country | South Korea |
| Vendor | KEPCO E&C |
| Owner / operator | KHNP |
| Construction start | 2025-05-20 |
| Original COD target | — |
| Current COD estimate | 2032 |
| Schedule slippage | — |
Notes
Construction formally resumed with first concrete 2025-05-20 after the 2017-2022 policy pause. COD 2032 is the KHNP target per WNN and NEI (WNA reactor table's 2033 grid-connection estimate treated as conservative).
Milestone log
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2032 (source)
- 2026-07-28 — Correction: current COD estimate revised to 2033 after review against PRIS and the latest WNA reactor table (was 2032). (source)
- 2025-05-20 — First safety-related concrete poured for the reactor building; KHNP targets commercial operation in 2032 (source)
- 2026-09-08 — Correction: current COD estimate revised back to 2032 after KHNP-target confirmation via WNN (2025-05-20) and NEI (2026); was 2033. (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 APR1400 design
- US, South Korea outline $120bn plan for eight reactors 2026-10-02
- South Korea nears $100B deal to build eight US reactors 2026-09-11
- South Korea weighs $120B for eight US reactors in tariff pact 2026-09-08
- The 7 nuclear stories that mattered this week 2026-10-03
- The 6 nuclear stories that mattered this week 2026-09-12
Sources
- https://world-nuclear.org/information-library/current-and-future-generation/plans-for-new-reactors-worldwide
- https://pris.iaea.org/pris/
- https://pris.iaea.org/PRIS/CountryStatistics/CountryDetails.aspx?current=KR
- https://www.world-nuclear-news.org/articles/construction-of-new-korean-reactor-begins
- https://www.neimagazine.com/news/shin-hanul-4-construction-starts/