Nuclear power in Switzerland
nuclearchain.net/countries/switzerland/ · data: Global Energy Monitor (GNPT, August 2026), CC BY 4.0 · printed from the live page
Switzerland operates 4 nuclear power reactors across 8 sites, with 3.1 GW of gross capacity. 2 units have been retired.
Operating fleet by type: PWR (3), BWR (1). Principal operators: Kernkraftwerk Beznau Ch-5312 Döttingen, Kernkraftwerk Leibstadt, Kernkraftwerk Gösgen-Däniken.
Operating capacity over time
Data table
| Year | Units online | GW gross | Change, GW |
|---|---|---|---|
| 1968 | 1 | 0.01 | +0.01 |
| 1969 | 1 | 0.38 | +0.37 |
| 1972 | 3 | 1.15 | +0.77 |
| 1979 | 4 | 2.21 | +1.06 |
| 1984 | 5 | 3.49 | +1.28 |
| 2019 | 4 | 3.10 | −0.39 |
Only years in which capacity changed are listed.
Position in the fuel chain
| Facility | Stage | Operator | Capacity / output |
|---|---|---|---|
| Zwilag central interim storage | dry storage | Zwilag Zwischenlager Würenlingen | not disclosed |
| Nördlich Lägern | repository | Nagra | not disclosed |
All units in Switzerland
| Unit | Site | Status | Type | Gross MW | Online |
|---|---|---|---|---|---|
| Beznau nuclear power plant 1 | Beznau nuclear power plant | PWR | 380 | 1969 | |
| Beznau nuclear power plant 2 | Beznau nuclear power plant | PWR | 380 | 1972 | |
| Goesgen nuclear power plant | Goesgen nuclear power plant | PWR | 1,060 | 1979 | |
| Leibstadt nuclear power plant | Leibstadt nuclear power plant | BWR | 1,275 | 1984 | |
| Beznau nuclear power plant 3 | Beznau nuclear power plant | Cancelled | - | 1,600 | - |
| Graben nuclear power plant 1 | Graben nuclear power plant | Cancelled | BWR | 1,140 | - |
| Kaiseraugst nuclear power plant 1 | Kaiseraugst nuclear power plant | Cancelled | - | 950 | - |
| Lucens nuclear power plant | Lucens nuclear power plant | Retired | PHWR | 7 | 1968 |
| Muehleberg nuclear power plant 1 | Muehleberg nuclear power plant | Retired | BWR | 390 | 1972 |
| Muehleberg nuclear power plant 2 | Muehleberg nuclear power plant | Cancelled | - | 1,600 | - |
| Niederamt nuclear power plant | Niederamt nuclear power plant | Cancelled | - | 1,600 | - |
Fuel supply exposure
The fuel families Switzerland's operating reactors take, and the fabricators our sources document as able to make each. This is capability, not contracts: it does not say who actually supplies a given plant.
| Fuel family | Units | GW gross | Documented fabricators | Note |
|---|---|---|---|---|
| PWR (square-lattice) fuel | 3 | 1.8 | Westinghouse Electric Company, Framatome, KEPCO Nuclear Fuel, China National Nuclear Corporation, ENUSA Industrias Avanzadas, Mitsubishi Heavy Industries | |
| BWR fuel | 1 | 1.3 | Global Nuclear Fuel, Westinghouse Electric Company, Framatome |
See every country and who fabricates fuel.
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Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data