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🇯🇵 Onagawa

Name: Onagawa
Address: Japan

Nuclear power plant · Japan

Suspended

Capacity≈2,090 MW

Units3

First Online1984

Construction Start1980

Reactor TypeBWR

Coordinates38.400, 141.504

Onagawa is a nuclear power station in Japan. Of its 3 recorded unit(s), 2 in suspended operation, 1 permanently shut down. Combined net capacity of the operating units is about 2,090 MW. Units in suspended operation are not permanently shut down: they remain licensed and can return to service. The first unit reached commercial operation in 1984. Reactor technology on site: BWR.

Reactor units at Onagawa

Unit	Status	Reactor type	Net capacity	Key dates
Onagawa-1	Shut Down	BWR BWR-4	498 MW	Construction 1980 · Grid 1984 · Shutdown 2018
Onagawa-2	Suspended	BWR BWR-5	796 MW	Construction 1991 · Grid 1995
Onagawa-3	Suspended	BWR BWR-5	796 MW	Construction 1998 · Grid 2002

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Other nuclear sites in Japan

Kashiwazaki Kariwa Hamaoka Fukushima Daiichi Ohi Fukushima Daini Genkai Takahama Shimane Tomari Ikata Shika Sendai

Contains information from GeoNuclearData, made available under the ODbL. Sources & methodology. Data compiled from open datasets (GeoNuclearData and operator reports); figures are approximate — verify official status with IAEA PRIS. See the Japan nuclear overview or browse all nuclear sites.