Current state
| Status | Under construction |
| Design | VVER-TOI (PWR) |
| Net capacity | 1,175 MWe |
| Country | Russia |
| Vendor | Rosatom |
| Owner / operator | Rosenergoatom |
| Construction start | — |
| Original COD target | — |
| Current COD estimate | 2032 |
| Schedule slippage | — |
Notes
WNA table lists under construction with 2032 grid connection. RPV manufacturing from Mar 2026 (Bellona/NEI/Rosatom); foundation slab May 2026 (WNN/Rosatom); internal-containment first tier due 2026. Unit 1 (Kursk II-1) grid-connected Dec 2025, commercial May 2026.
Milestone log
- 2026-06-16 — Listed as under construction in the WNA world table, grid connection estimated 2032 (source)
- 2026-03-26 — Rosatom machine-building division began manufacturing the VVER-TOI reactor vessel for unit 3 at Atommash (Volgodonsk) (source)
- 2026-05-08 — Foundation-slab concreting completed for the unit-3 reactor building (5,400 m2, ahead of schedule); wall erection next (Rosatom) (source)
The milestone log is append-only: corrections are recorded as new entries, never rewrites. Full history via /api/v1/changes.