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Shimane

Shimane, nuclear power plant in Japan, operates one boiling water reactor with 789 MW net installed capacity and has been in service since 1974.

Unit Shimane 2 has been operating for 37 years, since 1989. Shimane 3 is under construction. Its 789 MW net are enough to supply about 2,490,000 households.

Country
Japan
Units
3
Technology
BWR
Net capacity
789 MWe
First grid connection
1974
Operator
The Chugoku Electric Power
Owner
The Chugoku Electric Power Co Inc
Status
Operating
Operating capacity
789 MWe
net electrical
Units
3
1 operating
First start-up
1974
Shimane
Photo: Wikimedia Commons · author and license

Units

UnitTypeModelStatusMWeMWtConstruction startGrid connectionClosureLoad factor
Shimane 1Boiling water (BWR)BWR-3Shut down4391,380Jul 1970Dec 1973Apr 2015—
Shimane 2Boiling water (BWR)BWR-5Operating7892,436Feb 2, 1985Jul 11, 1988—38.6 % (2024)
Shimane 3Boiling water (BWR)ABWRUnder construction1,3253,926Oct 2006———

Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026

Shimane 1, a 439 MWe BWR (BWR-3), started construction in 1970 and operated from 1973 to 2015.

Shimane 2, a 789 MWe BWR (BWR-5), started construction in 1985, was connected to the grid in 1988 and is still operating, with a 38.6% load factor in 2024.

Shimane 3, a 1,325 MWe BWR (ABWR), has been under construction since 2006.

Operator: The Chugoku Electric Power.

Owner: The Chugoku Electric Power Co Inc (Shimane 1, Shimane 2, Shimane 3).

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