Muehleberg
Reactor Data
Reactor Units
Every power reactor at this site as listed in the IAEA Power Reactor Information System (PRIS): reactor type and model, net electrical capacity, grid connection and commercial operation dates, and current status.
1 unit: 1 permanent shutdown.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Muehleberg | BWR | BWR-4 | 373 | 1967-03-01 | 1971-07-01 | 1972-11-06 | 2019-12-20 | Permanent Shutdown |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Muehleberg | 306 | 390 | 1,097 | 1971-03-08 | GENERAL ELECTRIC TECHNICAL SERVICES CO. | BROWN BOVERI ET CIE |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Muehleberg | 122.5 TWh | 87.8% | 87.4% | 90.5% |
Operator: BKW ENERGIE AG
Owner: BKW ENERGIE AG
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-14.
Working Here
Per Diem Rates FY 2026
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from the U.S. State Department foreign per diem tables for FY 2026.
$292
Lodging/Night
$195
M&IE/Day
$487
Total/Day
Switzerland: rate for locations the State Department does not list separately
U.S. Department of State foreign per diem, for U.S. government and contractor travel.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
Facility Map
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
46.9689, 7.26774
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Plant Facts
About This Site
Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Muehleberg Nuclear Power Plant.
Muehleberg is a nuclear power plant in the municipality of Muehleberg, in the canton of Bern, Switzerland, on the Aare river.
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Construction began in March 1967. The reactor, a General Electric boiling water reactor, reached criticality in March 1971 and was connected to the grid on 1 July 1971. A turbine oil fire damaged cables connected to safety systems in July 1971 and delayed commercial operation, which began on 6 November 1972. The plant was permanently shut down on 20 December 2019, and decommissioning began in January 2020.