Tianwan nuclear power plant
Tianwan nuclear power plant is a nuclear power station in China with 6 operating units totalling 6,608 MW gross. The site has 8 units on record in total.
Units
| Unit | Status | Type | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Unit 1-1 | PWR | VVER V-428 | 1,060 | 2007 | |
| Unit 1-2 | PWR | VVER V-428 | 1,060 | 2007 | |
| Unit 2-3 | PWR | VVER V-428M | 1,126 | 2018 | |
| Unit 2-4 | PWR | VVER V-428M | 1,126 | 2018 | |
| Unit 3-5 | PWR | CNP-1000 | 1,118 | 2020 | |
| Unit 3-6 | PWR | CNP-1000 | 1,118 | 2021 | |
| Unit 4-7 | Under construction | PWR | VVER-1200/V-491 | 1,265 | 2026 |
| Unit 4-8 | Under construction | PWR | VVER-1200/V-491 | 1,265 | 2027 |
Unit by unit
Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.
Tianwan nuclear power plant 1-1
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-428 |
| Size class | Large |
| Gross capacity | 1,060MW |
| Net capacity | 1,000MW |
| Thermal output | 3,000MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 20 Oct 1999 |
|---|---|
| First criticality | 20 Dec 2005 |
| Grid connection | 12 May 2006 |
| Commercial operation | 17 May 2007 |
Tianwan nuclear power plant 1-2
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-428 |
| Size class | Large |
| Gross capacity | 1,060MW |
| Net capacity | 1,000MW |
| Thermal output | 3,000MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 20 Sep 2000 |
|---|---|
| First criticality | 1 May 2007 |
| Grid connection | 14 May 2007 |
| Commercial operation | 16 Aug 2007 |
Tianwan nuclear power plant 2-3
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-428M |
| Size class | Large |
| Gross capacity | 1,126MW |
| Net capacity | 1,060MW |
| Thermal output | 3,000MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 27 Dec 2012 |
|---|---|
| First criticality | 29 Sep 2017 |
| Grid connection | 30 Dec 2017 |
| Commercial operation | 14 Feb 2018 |
Tianwan nuclear power plant 2-4
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER V-428M |
| Size class | Large |
| Gross capacity | 1,126MW |
| Net capacity | 1,060MW |
| Thermal output | 3,000MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 27 Sep 2013 |
|---|---|
| First criticality | 30 Sep 2018 |
| Grid connection | 27 Oct 2018 |
| Commercial operation | 22 Dec 2018 |
Tianwan nuclear power plant 3-5
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | CNP-1000 |
| Size class | Large |
| Gross capacity | 1,118MW |
| Net capacity | 1,060MW |
| Thermal output | 2,905MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | China National Nuclear Corporation |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 27 Dec 2015 |
|---|---|
| First criticality | 27 Jul 2020 |
| Grid connection | 8 Aug 2020 |
| Commercial operation | 8 Sep 2020 |
Tianwan nuclear power plant 3-6
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | CNP-1000 |
| Size class | Large |
| Gross capacity | 1,118MW |
| Net capacity | 1,060MW |
| Thermal output | 2,905MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | China National Nuclear Corporation |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 7 Sep 2016 |
|---|---|
| First criticality | 4 May 2021 |
| Grid connection | 11 May 2021 |
| Commercial operation | 2 Jun 2021 |
Tianwan nuclear power plant 4-7 Under construction
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER-1200/V-491 |
| Size class | Large |
| Gross capacity | 1,265MW |
| Net capacity | 1,171MW |
| Thermal output | 3,200MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 19 May 2021 |
|---|---|
| Commercial operation | 1 Jan 2026 |
Tianwan nuclear power plant 4-8 Under construction
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | VVER-1200/V-491 |
| Size class | Large |
| Gross capacity | 1,265MW |
| Net capacity | 1,171MW |
| Thermal output | 3,200MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | Rosatom |
| Owner | China National Nuclear Power Co Ltd100% |
| Operator | Jiangsu Nuclear Power |
| Construction start | 25 Feb 2022 |
|---|---|
| Commercial operation | 1 Jan 2027 |
Tianwan nuclear power plant in context
By gross operating capacity Tianwan nuclear power plant is the 3rd largest of 18 operating nuclear sites in China, holding 10% of the country's operating capacity, and ranks 4th of 172 worldwide.
Its operating units started up between 2007 and 2021; the median unit is 8.0 years old, younger than the median of 10.0 in China.
The 6 units with both construction and grid dates on record took 4.6 to 6.6 years (median 5.0) from construction start to grid connection; the median across all reactors connected in the 2010s is 5.9 years.
The nearest other tracked nuclear sites are Haiyang nuclear power plant (284 km).
4 operating units are rated differently now from their design net capacities: Unit 1-1 +1.0%, Unit 1-2 +1.0%, Unit 3-5 +6.0% and Unit 3-6 +6.0%.
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Unit 1-1 | 1999 | 2006 | 6.6 | 6.8 (2000s) |
| Unit 1-2 | 2000 | 2007 | 6.6 | 6.8 (2000s) |
| Unit 2-3 | 2012 | 2017 | 5.0 | 5.9 (2010s) |
| Unit 2-4 | 2013 | 2018 | 5.1 | 5.9 (2010s) |
| Unit 3-5 | 2015 | 2020 | 4.6 | 7.7 (2020s) |
| Unit 3-6 | 2016 | 2021 | 4.7 | 7.7 (2020s) |
Nearest tracked nuclear sites
| Site | Country | Distance | Operating GW gross |
|---|---|---|---|
| Haiyang nuclear power plant | China | 284 km | 2.5 |
How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.
Earthquakes nearby
Loading the latest USGS check…
| Time (UTC) | Mag | Depth | Epicentre | Distance |
|---|
Magnitude 4.0 and above within 200 km of Tianwan nuclear power plant's listed coordinates, past 30 days. This is distance, not shaking: it says nothing about damage or any change in operation. Every plant.
| Location | Tianwan, Jiangsu, China |
|---|---|
| Coordinates | 34.6877, 119.4616 |
| Elevation | about 5 mabove sea level |
| Setting | On the sea coast, 0.1 km from the water |
| Region | Eastern Asia |
| Units by status | Operating: 6 Under construction: 2 |
Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.
| Owners | China National Nuclear Power Co Ltd |
|---|---|
| Operators | Jiangsu Nuclear Power |
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Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
- 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