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Nuclear Reactors in Japan

(As at December 2009)

The table below lists the nuclear reactors in Japan. All the power reactors are listed and some reactors not supplying electric power to the grid are also listed. There are currently 54 operational nuclear power reactors in Japan. They represent a total nuclear power capacity of 49,112 MW.

See also:

Reactors currently under construction or proposed.

Maps of Japanese power plants and other nuclear facilities



SITE NAME UNIT LOCATION
(PREFECTURE)
TYPE* OUTPUT
(MWe unless otherwise stated)
OWNER COMMERCIAL
OPERATION
SINCE

Tomari

1

Hokkaido

PWR

579

Hokkaido Electric Power Co.

22 June 1989

Tomari

2

Hokkaido

PWR

579

Hokkaido Electric Power Co.

12 April 1991

Tomari 3 Hokkaido PWR 912 Hokkaido Electric Power Co. 22 December 2009

Onagawa

1

Miyagi

BWR

524

Tohoku Electric Power Co.

1 June 1984

Onagawa

2

Miyagi

BWR

825

Tohoku Electric Power Co.

28 July 1995

Onagawa 3 Miyagi BWR 825 Tohoku Electric Power Co. 30 Jan 2002
Higashidoori 1 Aomori BWR 1100 Tohoku Electric Power Co. 8 December 2005

Fukushima I

1

Fukushima

BWR

460

Tokyo Electric Power Co.

26 March 1971

Fukushima I

2

Fukushima

BWR

784

Tokyo Electric Power Co.

18 July 1974

Fukushima I

3

Fukushima

BWR

784

Tokyo Electric Power Co.

27 March 1976

Fukushima I

4

Fukushima

BWR

784

Tokyo Electric Power Co.

12 Oct 1978

Fukushima I

5

Fukushima

BWR

784

Tokyo Electric Power Co.

18 April 1978

Fukushima I

6

Fukushima

BWR

1100

Tokyo Electric Power Co.

24 Oct 1979

Fukushima II

1

Fukushima

BWR

1100

Tokyo Electric Power Co.

20 April 1982

Fukushima II

2

Fukushima

BWR

1100

Tokyo Electric Power Co.

3 Feb 1984

Fukushima II

3

Fukushima

BWR

1100

Tokyo Electric Power Co.

21 June 1985

Fukushima II

4

Fukushima

BWR

1100

Tokyo Electric Power Co.

25 Aug 1987

Kashiwazaki-Kariwa

1

Niigata

BWR

1100

Tokyo Electric Power Co.

18 Sep 1985

Kashiwazaki-Kariwa

2

Niigata

BWR

1100

Tokyo Electric Power Co.

28 Sep 1990

Kashiwazaki-Kariwa

3

Niigata

BWR

1100

Tokyo Electric Power Co.

11 Aug 1993

Kashiwazaki-Kariwa

4

Niigata

BWR

1100

Tokyo Electric Power Co.

11 Aug 1994

Kashiwazaki-Kariwa

5

Niigata

BWR

1100

Tokyo Electric Power Co.

10 April 1990

Kashiwazaki-Kariwa

6

Niigata

ABWR

1356

Tokyo Electric Power Co.

7 Nov 1996

Kashiwazaki-Kariwa

7

Niigata

ABWR

1356

Tokyo Electric Power Co.

2 July 1997

Tokai-1

 

Ibaraki

GCR

166

Japan Atomic Power Co.

25 July 1966
(Permanent Shutdown 31 March1998. Being dismantled.)

Tokai-2

 

Ibaraki

BWR

1100

Japan Atomic Power Co.

28 Nov 1978

Tsuruga

1

Fukui

BWR

357

Japan Atomic Power Co.

14 March 1970

Tsuruga

2

Fukui

PWR

1160

Japan Atomic Power Co.

17 Feb 1987

Hamaoka

1

Shizuoka

BWR

540

Chubu Electric Power Co.

17 March 1976
(Permanent Shutdown 30 January 2009)

Hamaoka

2

Shizuoka

BWR

840

Chubu Electric Power Co.

29 Nov 1978
(Permanent Shutdown 30 January 2009)

Hamaoka

3

Shizuoka

BWR

1100

Chubu Electric Power Co.

28 Aug 1987

Hamaoka

4

Shizuoka

BWR

1137

Chubu Electric Power Co.

3 Sep 1993

Hamaoka 5 Shizuoka ABWR 1380 Chubu Electric Power Co. 18 January 2005

Shika

1

Ishikawa

BWR

540

Hokuriku Electric Power Co.

30 July 1993

Shika 2 Ishikawa ABWR 1358 Hokuriku Electric Power Co. 15 March 2006

Mihama

1

Fukui

PWR

340

Kansai Electric Power Co.

28 Nov 1970

Mihama

2

Fukui

PWR

500

Kansai Electric Power Co.

25 July 1972

Mihama

3

Fukui

PWR

826

Kansai Electric Power Co.

1 Dec 1976

Ohi

1

Fukui

PWR

1175

Kansai Electric Power Co.

27 March 1979

Ohi

2

Fukui

PWR

1175

Kansai Electric Power Co.

5 Dec 1979

Ohi

3

Fukui

PWR

1180

Kansai Electric Power Co.

18 Dec 1991

Ohi

4

Fukui

PWR

1180

Kansai Electric Power Co.

2 Feb 1993

Takahama

1

Fukui

PWR

826

Kansai Electric Power Co.

14 Nov 1974

Takahama

2

Fukui

PWR

826

Kansai Electric Power Co.

14 Nov 1975

Takahama

3

Fukui

PWR

870

Kansai Electric Power Co.

17 Jan 1985

Takahama

4

Fukui

PWR

870

Kansai Electric Power Co.

5 June 1985

Shimane

1

Shimane

BWR

460

Chugoku Electric Power Co.

29 March 1974

Shimane

2

Shimane

BWR

820

Chugoku Electric Power Co.

10 Feb 1989

Ikata

1

Ehime

PWR

566

Shikoku Electric Power Co.

30 Sep 1977

Ikata

2

Ehime

PWR

566

Shikoku Electric Power Co.

19 March 1982

Ikata

3

Ehime

PWR

890

Shikoku Electric Power Co.

15 Dec 1994

Genkai

1

Saga

PWR

559

Kyushu Electric Power Co.

15 Oct 1975

Genkai

2

Saga

PWR

559

Kyushu Electric Power Co.

30 March 1981

Genkai

3

Saga

PWR

1180

Kyushu Electric Power Co.

18 March 1994

Genkai

4

Saga

PWR

1180

Kyushu Electric Power Co.

25 July 1997

Sendai

1

Kagoshima

PWR

890

Kyushu Electric Power Co.

4 July 1984

Sendai

2

Kagoshima

PWR

890

Kyushu Electric Power Co.

28 Nov 1985

Fugen  1 Fukui ATR 165 Japan Nuclear Cycle Development Institute (JNC) 20 March 1979
(Shut down 29 March 2003.
Being dismantled.)
Monju  1 Fukui FBR 280 Japan Nuclear Cycle Development Institute (JNC) Restarted on 6 May 2010 for the first time in over 14 years.
(Operation suspended on 8 December 1995 when a sodium leak and fire occurred during trials.)
Research Reactors 15 National and private institutes and universities Various (IAEA list may be out of date regarding which ones are operational.)


PWR: Pressurized Water Reactor
BWR: Boiling Water Reactor
ABWR: Advanced Boiling Water Reactor
GCR: Gas Cooled Reactor
FBR: Fast Breeder Reactor
ATR: Advanced Test Reactor
Crit. Fast = Very low power Critical Assembly for fast neutrons

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