Linglong One (ACP100)
The world's first commercial land-based SMR: a 125 MWe integral PWR in Hainan, in commissioning.
Multipurpose integral PWR rated at 385 MWt and 125 MWe. ARIS 2024 reports construction in progress, a deployment condition that is not converted here into a design stage; the linked Linglong One project poured first concrete in July 2021.
- Stated output
- 385 MWt · 125 MWe net/gross basis not stated · per unit
- Maturity
- Stage not stated
- Developer
- China National Nuclear Corporation (CNNC / NPIC)
- Origin
- China
Energy and applications
Published magnitudes; this is not an engineering diagram.
Three different states
Maturity, licensing and deployment are not equivalent.
Maturity
Stage not statedHow far the published engineering has progressed.
Licensing and review
No regulatory readingWhat a regulator decided, where and on what date.
Linked deployment
1 geolocated unitWhich projects or units are linked to the design.
Linked deployment
| Plant | Unit | Country | Dataset status |
|---|---|---|---|
| Linglong | 1 | China | construction |
Technical sources
- IAEA ARIS · SMR Catalogue 2024IAEA · 2024
- CNNC · Linglong One construction startDeveloper · 2021-07-14
How it works and why it matters
CNNC's ACP100 is a 385 MWt, 125 MWe integral PWR with steam generators inside the vessel and pumps coupled to it. Construction at Changjiang, Hainan, began in July 2021; cold testing was completed in October 2025 and commercial operation is expected in 2026.
It was the first SMR to pass the IAEA safety review, in 2016. Besides electricity, it is proposed for district heating, desalination and industrial steam.
Quick facts
| Power | 385 MWt, 125 MWe |
|---|---|
| Type | integral PWR |
| Site | Changjiang, Hainan |
| Status 2026 | commissioning |