Super Phenix

Technical specifications, photos, nearby jobs, and satellite map for Super Phenix.

Reactor Data

Reactor Units

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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
Super-Phenix FBR Na-1200 1,200 1976-12-13 1986-01-14 1986-12-01 1998-12-31 Permanent Shutdown
Capacity, milestones and suppliers
Unit Design MWe Gross MWe Thermal MWt First Criticality Reactor Supplier Turbine Supplier Notes
Super-Phenix 1,200 1,242 3,000 1985-09-07 ASPALDO ASPALDO
Lifetime performance, through 2025
Unit Electricity Supplied Load Factor Energy Availability Operating Factor
Super-Phenix 3.4 TWh 7.8% 9.1% 14.3%
Operator: ÉLECTRICITÉ DE FRANCE
Owner: ÉLECTRICITÉ DE FRANCE
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-19.

Working Here

Per Diem Rates FY 2026

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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.
$220
Lodging/Night
$132
M&IE/Day
$352
Total/Day
France: 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.

Location & Contact

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Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Address:
Creys-Mépieu, Auvergne-Rhône-Alpes, France
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Plant Facts

About This Site

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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: Superphénix.

Superphénix was a sodium-cooled fast breeder reactor at Creys-Malville, in the commune of Creys-Mépieu in the Isère department, on the Rhône river near the Swiss border.

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Construction began in the mid-1970s. In July 1977, a protester was killed during a demonstration against the project, and on 18 January 1982 a rocket attack hit the unfinished containment building. The reactor first reached criticality in 1985 and was connected to the grid on 14 January 1986. Power production stopped in December 1996 for maintenance and did not resume. In June 1997 the government announced permanent closure, and a decree made it official in December 1998. The last fuel was removed from the reactor on 18 March 2003.