Tianwan nuclear power plant 4-7
Under construction China
Gross capacity
1,265MW
Tianwan nuclear power plant 4-7 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 2026.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER-1200/V-491 |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,265MW |
| Net capacity (reference) | 1,171MW |
| Net capacity (design) | 1,171MW |
| Thermal output | 3,200MWt |
| NSSS vendor | Rosatomall vendors |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Tianwan nuclear power plant |
|---|---|
| Unit | 4-7 |
| 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utilities do not publish fuel contracts.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
- 19 May 2021Construction start
- 1 Jan 2026Commercial 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 4-8 | 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 4-8 | 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
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data