China · 29.102, 121.639Sanmen
Sanmen, nuclear power plant in China, operates 2 pressurized water reactors with 2,314 MW net installed capacity and has been in service since 2018.
Sanmen 2-3 is under construction. Its 2,314 MW net are enough to supply about 7,290,000 households.
- Country
- China
- Units
- 6
- Technology
- PWR
- Net capacity
- 2,314 MWe
- First grid connection
- 2018
- Operator
- Sanmen Nuclear Power
- Owner
- China National Nuclear Power Co Ltd
- Status
- Operating
See also: alerts for this plant · every plant in China · Vendor: Westinghouse · Vendor: CNNC · every PWR reactor · how a PWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Sanmen 1-1 | Pressurized water (PWR) | AP1000 | Operating | 1,157 | 3,400 | Apr 19, 2009 | Jun 30, 2018 | — | 93.0 % (2024) |
| Sanmen 1-2 | Pressurized water (PWR) | AP1000 | Operating | 1,157 | 3,400 | Dec 15, 2009 | Aug 24, 2018 | — | 96.6 % (2024) |
| Sanmen 2-3 | Pressurized water (PWR) | CAP1000 | Under construction | 1,163 | 3,400 | Jun 2022 | — | — | — |
| Sanmen 2-4 | Pressurized water (PWR) | CAP1000 | Under construction | 1,163 | 3,400 | Mar 2023 | — | — | — |
| Sanmen 3-5 | Pressurized water (PWR) | Hualong One (HPR-1000) | Planned | 1,200 | — | — | 2027 (planned) | — | — |
| Sanmen 3-6 | Pressurized water (PWR) | Hualong One (HPR-1000) | Planned | 1,200 | — | — | 2028 (planned) | — | — |
Data: IAEA PRIS · Global Energy Monitor · updated on Aug 1, 2026
Sanmen 1-1, a 1,157 MWe PWR (AP1000), started construction in 2009, was connected to the grid in 2018 and is still operating, with a 93% load factor in 2024.
Sanmen 1-2, a 1,157 MWe PWR (AP1000), started construction in 2009, was connected to the grid in 2018 and is still operating, with a 96.6% load factor in 2024.
Sanmen 2-3, a 1,163 MWe PWR (CAP1000), has been under construction since 2022.
Sanmen 2-4, a 1,163 MWe PWR (CAP1000), has been under construction since 2023.
Sanmen 3-5, a 1,200 MWe gross PWR (Hualong One (HPR-1000)), is planned, with grid connection expected in 2027.
Sanmen 3-6, a 1,200 MWe gross PWR (Hualong One (HPR-1000)), is planned, with grid connection expected in 2028.
Operator: Sanmen Nuclear Power.
Owner: China National Nuclear Power Co Ltd (Sanmen 1-1, Sanmen 1-2, Sanmen 2-3, Sanmen 2-4, Sanmen 3-5, Sanmen 3-6).