Muehleberg nuclear power plant
Muehleberg nuclear power plant is a nuclear site in Switzerland with 2 units on record. None is currently operating.
Units
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.
Muehleberg nuclear power plant 1 Retired
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | BWR-4 |
| Size class | Large |
| Gross capacity | 390MW |
| Net capacity | 373MW |
| Thermal output | 1,097MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | GE Vernova Hitachi Nuclear Energy |
| Owner | BKW Energie AG100% |
| Operator | BKW Energie |
| Construction start | 1 Mar 1967 |
|---|---|
| First criticality | 8 Mar 1971 |
| Grid connection | 1 Jul 1971 |
| Commercial operation | 6 Nov 1972 |
| Permanent shutdown | 20 Dec 2019 |
Muehleberg nuclear power plant 2 Cancelled
| Reactor type | not disclosed |
|---|---|
| Model | not disclosed |
| Size class | Large |
| Gross capacity | 1,600MW |
| Net capacity | not disclosed |
| Thermal output | not disclosed |
| Enrichment | not established |
| NSSS vendor | not on record |
| Cancelled | 2011 |
| Milestones | no dates on record |
|---|
Muehleberg nuclear power plant in context
The one unit with both construction and grid dates on record took 4.3 years from construction start to grid connection; the median across all reactors connected in the 1970s is 5.4 years.
The nearest other tracked nuclear sites are Goesgen nuclear power plant (69 km), Beznau nuclear power plant (97 km) and Leibstadt nuclear power plant (99 km).
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Unit 1 | 1967 | 1971 | 4.3 | 5.4 (1970s) |
Nearest tracked nuclear sites
| Site | Country | Distance | Operating GW gross |
|---|---|---|---|
| Goesgen nuclear power plant | Switzerland | 69 km | 1.1 |
| Beznau nuclear power plant | Switzerland | 97 km | 0.8 |
| Leibstadt nuclear power plant | Switzerland | 99 km | 1.3 |
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.
| Location | Bern, Switzerland |
|---|---|
| Coordinates | 46.9689, 7.2684 |
| Elevation | about 475 mabove sea level |
| Setting | About 300 km from the sea |
| Region | Western Europe |
| Units by status | Retired: 1 Cancelled: 1 |
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 | BKW Energie AG |
|---|---|
| Operators | BKW Energie |
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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