Nuclear Power Plants in Japan
Fukushima Daiichi
Location: Fukushima
Operator: Tokyo Electric Power Co
Configuration: 1 X 460 MW, 4 X 784 MW, 1 X 1,100 MW BWR
Operation: 1971-1979
Reactor supplier: GE, Hitachi
T/G supplier: GE, Hitachi, Toshiba
EPC: Ebasco, Taihei Dengyo Kaisha, Kajima, Hiitachi, Toshiba
Quick facts: This was one of the world's largest power stations at completion. The Unit-6 turbine internals were changed out by Toshiba ca 2009.

Photograph courtesy of Tokyo Electric Power Co Ltd
Posted 13 Mar 2011

Fukushima Daiichi
Location: Fukushima
Operator: Tokyo Electric Power Co
Configuration: 1 X 460 MW, 4 X 784 MW, 1 X 1,100 MW BWR
Operation: 1971-1979 (ret)
Reactor supplier: GE, Hitachi
T/G supplier: GE, Hitachi, Toshiba
EPC: Ebasco, Taihei Dengyo Kaisha, Kajima, Hiitachi, Toshiba
Quick facts: The Fukushima Daiichi site was hit by a 14m+ tsunami resulting from the Miyagi Sendai Earthquake on 11 Mar 2011. Loss of onsite and offsite power ultimately resulted in a number of hydrogen gas explosions and other damage that crippled Units 1-4 (shown left to right on 20 Mar 2011) with considerable radiation leakage. Later in the month, Tepco said that these units would not re-open and Units5&6 were formally retired in Dec 2013.

Photograph courtesy Air Photo Service
Posted 16 Apr 2011

Fukushima Daini
Location: Fukushima
Operator: Tokyo Electric Power Co
Configuration: 4 X 1,100 MW BWR
Operation: 1982-1987
Reactor supplier: Hitachi
T/G supplier: GE, Hitachi, Toshiba
EPC: Kajima, Hiitachi, Toshiba, Takenaka, Shimizu
Quick facts:  Fukushima Daini was also damaged by the Miyagi Sendai Earthquake and tsunami on 11 Mar 2011.

Photograph courtesy of Tokyo Electric Power Co Ltd
Posted 13 Mar 2011

Hamaoka
Location: Shizuoka
Operator: Chubu Electric Power Co
Configuration: 1 X 540 MW (ret), 1 X 840 MW (ret), 1 X 1,100 MW, 1 X 1,137 MW, 1 X 1,380 MW BWR
Operation: 1982-1987
Reactor supplier: Hitachi
T/G supplier: Hitachi
EPC: Chubu Electric, Takenaka, Kajima, Taihei Dengyo Kaisha
Quick facts:  This NPP is on 1.6 km² site in Omaezaki city, 200km southwest of Tokyo. Units 1&2 were stopped in 2002 and 2004. respectively, due to piping issues. They were retired Jan 2009. Unit-6 (1,380 MW ABWR) began preliminary construction on 6 Dec 2008, but work has been stopped.

Photograph courtesy of Chubu Electric Power Co Ltd
Posted 3 May 2014

Genkai
Location: Saga
Operator: Kyushu Electric Power Co
Configuration: 2 X 559 MW, 2 X 1,180 MW PWR
Operation: 1975-1997
Reactor supplier: MHI
T/G supplier: MHI, Melco
EPC: Mitsubishi Atomic Power Industries Inc, Obayashi Gumi Co, Shimizu, Takenaka
Quick facts: This site is on Genkai Point in Japan's far southwest. First onsite surveys began in Jul 1967 and the project was announced in Jun 1968. Construction began in Mar 1971 and Unit-1 went commercial in Oct 1975, followed by Unit-2 in Mar 1981. Units 3&4 got construction permits in Oct 1984. Unit-3 went commercial in Mar 1994, followed by Unit-4 in July 1997. In Nov 2009, Genaki-3 started operations with MOX fuel.

Photograph courtesy of Kyushu Electric Power Co Ltd
Posted 16 Apr 2011

Higashidori
Location: Aomori
Operator: Tohoku Electric Power Co
Configuration: 1 X 1,100 MW BWR
Operation: 2005
Reactor supplier: Toshiba
T/G supplier: Toshiba
EPC: Kajima
Quick facts: The construction permit for this unit was issued in Aug 1998, the first such license in Japan in a decade. Construction began in Dec 1999.  The plant went commercial on 8 Dec 2005 at 1012am, about five months later than the initial schedule.

Photograph courtesy of Tohoku Electric Power Co Ltd
Posted 7 Jan 2006

Ikata
Location: Ehime
Operator: Shikoku Electric Power Co
Configuration: 2 X 566 MW, 1 X 890 MW PWR
Operation: 1975-1995
Reactor supplier: MHI
T/G supplier: MHI
EPC: Mitsubishi Atomic Power Industries Inc, Taisei Corp, Takenaka Corp
Quick facts: In Jan 2010, 16 MOX fuel assemblies were loaded into Ikata-3 and in Mar 2010, this became only the second Japanese reactor to enter full commercial service with MOX fuel.

Photograph courtesy of Shikoku Electric Power Co Ltd
Posted 12 Oct 2005

Kashiwazaki-Kariwa 6&7
Location: Niigata
Operator: Tokyo  Electric Power Co
Configuration: 2 X 1,353 MW ABWR
Operation: 1996-1997
Reactor supplier: GE
T/G supplier: GE, Hitachi
EPC: Toshiba, Hitachi, GE , Kajima, Hazama, Kumagai
Quick facts: These were the first ABWRs in the world. The site is not far from the epicenter of the 6.6 magnitude earthquake that occurred in Jul 2007 offshore Chuetsu. Although no major damage was sustained, the quake exceeded the seismic design basis and was followed by an extended plant shutdown. Unit-7 restarted on 9 May 2009 and Unit-6 in Aug 2009. The site also has four 1,100-MW BWRs which in total make KK the world's largest nuclear power station.

Photograph courtesy of Hitachi Ltd
Posted 24 Jan 2009

Mihama
Location: Fukui
Operator: Kansai Electric Power Co
Configuration: 1 X 340 MW, 1 X 500 MW, 1 X 826 MW PWR
Operation: 1970-1976
Reactor supplier: Westinghouse, MHI
T/G supplier: MHI

Photograph courtesy of Kansai Electric Power Co Ltd
Posted 13 Mar 2001

Monju
Location: Fukui
Operator: Japan Atomic Energy Agency
Configuration: 1 X 280 MW FBR
Operation: 1994 (criticality)
Reactor supplier: multiple vendors
T/G supplier: Toshiba
EPC: FBR Engineering Co, Obayashi, Taisei, Kajima
Quick facts: The plant was closed after a sodium fire in 1995. 14yrs and 5mos later, the unit started back up on 6 May 2010 but has never operated at full power for extended periods and it is no closed witht he ret of Japans' NPP fleet.The plant uses plutonium fuel and is configured to use fissile material that can be reused as fuel.

Photograph courtesy of Institute of Advanced Energy
Posted 9 Dec 2006

Ōma
Location: Aomori
Operator: J-Power
Configuration: 1 X 1,383 MW ABWR
Operation: TBD
Reactor supplier: Hitachi
T/G supplier: Hitachi
EPC: Hitachi
Quick facts: In Apr 2008, J-Power received approval for its first NPP nuclear project, this ABWR at the far northern tip of Aomori Prefecture in Shimokita-gun on the the Tsugaru Strai. The site was first proposed in the late 1970s for the launch Japanese ATR, but this was replaced by an ABWR project in 1995. The initial license application was made in 1999, but later withdrawn and re-submitted in 2004. Site preparation began in 2007 and construction got underway in May 2008 with operation slipped by two years in Nov 2008 to Nov 2014.Construction was halted at about one-third completion after the Fukushima diaster in Mar 2011 and resumed in Oct 2012. This will be the world's first ABWR able to use MOX fuel throughout the entire core.

Photograph courtesy of www.japantimes.co.jp
Posted 12 Feb 2014

Ōi
Location: Fukui
Operator: Kansai Electric Power Co
Configuration: 2 X 1,175 MW, 2 X 1,180 MW PWR
Operation: 1979-1993
Reactor supplier: Westinghouse, MHI
T/G supplier: MHI, Melco
EPC: NEWJEC, Kumagi, Obayashi, Mitsubishi Atomic Power Industries, Takenaka
Quick facts: This is Kansai Electric's second largest power station and the second largest nuclear power plant in Japan. The site is nearby Wakasa Bay National Park. Units 1&2 have ice condensers.

Photograph courtesy of Kansai Electric Power Co Ltd
Posted 16 Apr 2011

Onagawa
Location: Miyagi
Operator: Tohoku Electric Power Co
Configuration: 1 X 524 MW, 2 X 825 MW BWR
Operation: 1984-2002
Reactor supplier: Hitachi
T/G supplier: Hitachi, Toshiba
EPC: Kajima, Toshiba
Quick facts: Fuel loading at Unit-2 started in Oct 1994. In Apr 2001, Tohoku Electric started up a third 275kV trunk line from the plant to the Aoba trunk line. Fuel loading at Unit-3 began in April 2001.

Photograph courtesy of World Nuclear Association
Posted 5 Sep 2007

Sendai
Location: Kagoshima
Operator: Kyushu Electric Power Co
Configuration: 2 X 890 MW PWR
Operation: 1984-1985
Reactor supplier: MHI
T/G supplier: MHI
EPC: Mitsubishi Atomic Power Industries, Taisei Corp
Quick facts: In Jan 2011, Kyushu Electric submitted plans for an MHI, 1,590-MW APWR at Sendai for service in 2019. In Apr 2011, the company shelved the project.

Photograph courtesy of Kyushu Electric Power Co Ltd
Posted 16 Apr 2011

Shika
Location: Ishikawa
Operator: Hokuriku Electric Power Co
Configuration: 1 X 540 MW BWR, 1 X 1,358 MW ABWR
Operation: 1993-2006
Reactor supplier: Hitachi
T/G supplier: Hitachi
Quick facts: Shika-2 went commercial on 15 Mar 2006. Construction time from first concrete to fuel load was 43mos.

Photograph courtesy of Hokuriku Electric Power Co Ltd
Posted 10 Nov 2004

Shimane 1&2
Location: Shimane
Operator: Chugoku Electric Power Co
Configuration: 1 X 460 MW, 1 X 825 MW BWR
Operation: 1974-1989
Reactor supplier: Hitachi
T/G supplier: Hitachi
Quick facts: This NPP is in Kashima-chou town in the Matsue city.

Photograph courtesy of Chugoku Electric Power Co Ltd
Posted 15 Sep 2001

Shimane-3
Location: Shimane
Operator: Chugoku Electric Power Co
Configuration: 1 X 1,373 MW ABWR
Operation: TBD
Reactor supplier: Hitachi
T/G supplier: Hitachi
EPC: Hitachi
Quick facts: In Aug 2000, Shimane-3 was approved. Construction started in Dec 2005 and the reactor vessel was placed in July 2009. Hitachi used a modular construction method the company pioneered and . This is also the first reactor to be largely constructed under the auspices of a 2007 partnership with GE called Hitachi-GE Nuclear Energy Ltd. Start-up testing was underway at the time of the Fukushima NPP disaster.

Photograph by Qurren (wikipedia)
Posted 12 Feb 2014

Takahama
Location: Fukui
Operator: Kansai Electric Power Co
Configuration: 2 X 826 MW PWR, 2 X 870 MW PWR
Operation: 1974-1985
Reactor supplier: WH, MHI
T/G supplier: MHI, Melco
EPC: Maeda, Hazama, Taisei, Mitsubishi Atomic Power Industries
Quick facts: Takahama NPP is in Oi District.

Photograph courtesy of Kansai Electric Power Co
Posted 1 Aug 2010

Tokai
Location: Ibaraki
Operator: Japan Atomic Power Co
Configuration: 1 X 166 MW GCR (ret 1997), 1 X 1,100 MW BWR
Operation: 1966-1978
Reactor supplier: GEC, GE
T/G supplier: Parsons, GE
EPC: GEC, GE, Hitachi

Photograph courtesy of Japan Atomic Power Co Ltd
Posted 27 Mar 2004

Tomari
Location: Hokkaido
Operator: Hokkaido Electric Power Co
Configuration: 2 X 579 MW PWR, 1 X 912 MW PWR
Operation: 1989-2009
Reactor supplier: MHI
T/G supplier: MHI, Melco
EPC: MHI
Quick facts: Tomari is about 60km west of Sapporo. Unit-3 went commercial on 22 Dec 2009.

Photograph courtesy of Hokkaido Electric Power Co
Re-posted 24 May 2014

Tsuruga
Location: Fukui
Operator: Japan Atomic Power Co
Configuration: 1 X 357 MW BWR, 1 X 1,160 MW PWR
Operation: 1970-1987
Reactor supplier: GE, MHI
T/G supplier: GE, MHI

Photograph courtesy of Japan Atomic Power Co Ltd
Posted 27 Mar 2004

Abbreviations

Data: industcards, Platts UDI World Electric Power Plants Data Base

Updated 24-May-2014

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