Nuclear Power Reactors — World Nuclear Association
Quick answer: View an interactive map of 868 nuclear reactors worldwide — filter by status, analyze capacity by country, and click any reactor for capacity, output history and news.
Fleet analysis
About this dataset
868 nuclear reactors across 42 countries — operable, under construction, planned and permanently shut down — with capacity and annual output.
Explore the world's nuclear fleet on an interactive map from the World Nuclear Association reactor database: 441 operable reactors totalling ~428 GW, 80 under construction (~87 GW), 123 planned and 224 permanently shut down across 42 countries. Click any reactor for gross capacity, 2025 output, construction, grid connection and shutdown dates, annual output history (GWh) and World Nuclear News headlines. Built-in analysis ranks countries by operable capacity and maps the fleet's construction waves by decade.
Notable reactors
Landmark units of the global fleet, from the largest units online to the newest construction.
Taishan 1 & 2, China
1,750 MW each
The largest operating units worldwide — EPR reactors in Guangdong, grid-connected in 2018-2019.
Hinkley Point C, United Kingdom
2 × 1,720 MW under construction
Europe's largest construction project; two EPRs alongside the planned Sizewell C twins (1,670 MW each).
Kashiwazaki-Kariwa, Japan
7 reactors, 8.2 GW
The world's largest nuclear station by capacity — restart approvals are proceeding unit by unit.
Akademik Lomonosov, Russia
Floating plant, 2 × 35 MW
The world's only floating nuclear power plant, supplying remote Chukotka from Pevek.
Operable capacity by country
Top countries by gross operable nuclear capacity (MW) and reactor count.
| Country | Operable capacity (MW) | Reactor units |
|---|---|---|
| United States | 102,475 | 94 |
| China | 68,393 | 57 |
| France | 65,690 | 56 |
| Japan | 33,083 | 33 |
| Russia | 29,795 | 37 |
| South Korea | 27,126 | 26 |
| Ukraine | 13,835 | 15 |
| Canada | 13,545 | 19 |
| India | 8,780 | 23 |
| Spain | 7,408 | 7 |
Counts of operable units only; download the GeoJSON for the full fleet including planned and shut-down reactors.
Fleet status overview
The whole reactor database grouped by status.
| Status | Reactors | Gross capacity (MW) |
|---|---|---|
| Operable | 441 | ~427,562 |
| Under construction | 80 | ~87,046 |
| Planned | 123 | — |
| Permanently shut down | 224 | — |
How to download
- 1 Download the reactors GeoJSON (or CSV for spreadsheets).
- 2 Open in GeoDataViewer Studio by dragging the file onto the map.
- 3 Filter by status (operable / under construction / planned / shut down).
- 4 Attribute World Nuclear Association when redistributing.
FAQ
Where does the nuclear reactor data come from?
From the World Nuclear Association's public reactor database, joined to plant coordinates, annual output (GWh, 1954-2025) and World Nuclear News headlines. The WNA reactor database is the reference source for the global nuclear fleet.
What do the reactor statuses mean?
Operable reactors are connected to the grid and generating. Under Construction reactors are being built. Planned reactors have official orders or firm government commitments. Permanently Shutdown reactors will not return to service.
How many operable reactors and how much capacity?
441 operable reactors totalling about 428 GW gross across 42 countries, led by the United States (~102 GW), China (~68 GW) and France (~66 GW). A further 80 reactors (~87 GW) are under construction, mostly in Asia.
What is included in the annual output field?
Each reactor carries its annual electricity output in GWh from 1954 to 2025 where WNA publishes it — the sum across all reactors tracks global nuclear generation (~2,670 TWh in 2024).
Can I use this commercially?
The underlying data is © World Nuclear Association — check WNA terms before commercial redistribution. Headlines are © World Nuclear News.