Tianwan nuclear power plant 4-8
Under construction China
Gross capacity
1,265MW
Tianwan nuclear power plant 4-8 is a pressurised water reactor unit at Tianwan nuclear power plant in China rated at 1,265 MW gross. It is under construction. Commercial operation began 1 Jan 2027.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER-1200/V-491 |
| Size class | Large |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,265MW |
| Net capacity (reference) | 1,171MW |
| Net capacity (design) | 1,171MW |
| Thermal output | 3,200MWt |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Tianwan nuclear power plant |
|---|---|
| Unit | 4-8 |
| Country | China |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Coordinates | 34.6877, 119.4616 |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- TVEL Fuel Company VVER fuel assemblies
- Westinghouse Electric Company VVER-compatible fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units —
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 25 Feb 2022Construction start
- 1 Jan 2027Commercial operation
Other units at Tianwan nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Tianwan nuclear power plant 1-1 | 1,060 | |
| Tianwan nuclear power plant 1-2 | 1,060 | |
| Tianwan nuclear power plant 2-3 | 1,126 | |
| Tianwan nuclear power plant 2-4 | 1,126 | |
| Tianwan nuclear power plant 3-5 | 1,118 | |
| Tianwan nuclear power plant 3-6 | 1,118 | |
| Tianwan nuclear power plant 4-7 | Under construction | 1,265 |
Other VVER-1200/V-491 units
13 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Astravets nuclear power plant 3 | Belarus | Pre-construction | 1,200 |
| Baltiyskaya nuclear power plant 1 | Russia | Cancelled | 1,194 |
| Baltiyskaya nuclear power plant 2 | Russia | Cancelled | 1,170 |
| Leningrad nuclear power plant 2-3 | Russia | Under construction | 1,199 |
| Leningrad nuclear power plant 2-4 | Russia | Under construction | 1,199 |
| Ninh Thuận 1 nuclear power plant 1 | Vietnam | Pre-construction | 1,200 |
| Ninh Thuận 1 nuclear power plant 2 | Vietnam | Pre-construction | 1,200 |
| Ninh Thuận 1 nuclear power plant 3 | Vietnam | Announced | 1,200 |
| Ninh Thuận 1 nuclear power plant 4 | Vietnam | Announced | 1,200 |
| Tianwan nuclear power plant 4-7 | China | Under construction | 1,265 |
| Xudapu nuclear power plant 2-3 | China | Under construction | 1,274 |
| Xudapu nuclear power plant 2-4 | China | Under construction | 1,274 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2026-06-08
- GEM.wiki entry (further reading) — CC BY-SA 4.0 — linked, not quoted