Nuclear Reactors in Japan
33
Operable
Reactors
Reactors
31,679 MWe
6%
Nuclear Share
of Generation
of Generation
77,539 GWh (2023)
2
Reactors Under
Construction
Construction
2,653 MWe
Total Operable Nuclear Capacity
Total Electricity Generated
All Operable Reactors
| Reactor Name | Model | Process | Capacity (MWe) | Grid Connection | Load Factor (2023) (%) | Electricity Generated (2023) (GWh) |
|---|---|---|---|---|---|---|
| Genkai 3 | M (4-loop) | PWR | 1127 | 15/06/1993 | 88.00 | 8691.55 |
| Genkai 4 | M (4-loop) | PWR | 1127 | 12/11/1996 | 90.30 | 8916.51 |
| Hamaoka 3 | BWR-5 | BWR | 1056 | 20/01/1987 | 0.00 | 0.00 |
| Hamaoka 4 | BWR-5 | BWR | 1092 | 27/01/1993 | 0.00 | 0.00 |
| Hamaoka 5 | ABWR | BWR | 1325 | 30/04/2004 | 0.00 | 0.00 |
| Higashi Dori 1 (Tohoku) | BWR-5 | BWR | 1067 | 09/03/2005 | 0.00 | 0.00 |
| Ikata 3 | M (3-loop) | PWR | 846 | 29/03/1994 | 77.10 | 5715.39 |
| Kashiwazaki Kariwa 1 | BWR-5 | BWR | 1067 | 13/02/1985 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 2 | BWR-5 | BWR | 1067 | 08/02/1990 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 3 | BWR-5 | BWR | 1067 | 08/12/1992 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 4 | BWR-5 | BWR | 1067 | 21/12/1993 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 5 | BWR-5 | BWR | 1067 | 12/09/1989 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 6 | ABWR | BWR | 1315 | 29/01/1996 | 0.00 | 0.00 |
| Kashiwazaki Kariwa 7 | ABWR | BWR | 1315 | 17/12/1996 | 0.00 | 0.00 |
| Mihama 3 | M (3-loop) | PWR | 780 | 19/02/1976 | 85.20 | 5823.48 |
| Ohi 3 | M (4-loop) | PWR | 1127 | 07/06/1991 | 102.90 | 10162.58 |
| Ohi 4 | M (4-loop) | PWR | 1127 | 19/06/1992 | 86.60 | 8554.07 |
| Onagawa 2 | BWR-5 | BWR | 796 | 23/12/1994 | 0.00 | 0.00 |
| Onagawa 3 | BWR-5 | BWR | 796 | 30/05/2001 | 0.00 | 0.00 |
| Sendai 1 | M (3-loop) | PWR | 846 | 16/09/1983 | 87.70 | 6502.42 |
| Sendai 2 | M (3-loop) | PWR | 846 | 05/04/1985 | 88.00 | 6518.10 |
| Shika 1 | BWR-5 | BWR | 505 | 12/01/1993 | 0.00 | 0.00 |
| Shika 2 | ABWR | BWR | 1108 | 04/07/2005 | 0.00 | 0.00 |
| Shimane 2 | BWR-5 | BWR | 789 | 11/07/1988 | 0.00 | 0.00 |
| Takahama 1 | M (3-loop) | PWR | 780 | 27/03/1974 | 103.20 | 2936.11 |
| Takahama 2 | M (3-loop) | PWR | 780 | 17/01/1975 | 105.20 | 1987.78 |
| Takahama 3 | M (3-loop) | PWR | 830 | 09/05/1984 | 76.40 | 5552.80 |
| Takahama 4 | M (3-loop) | PWR | 830 | 01/11/1984 | 85.00 | 6177.84 |
| Tokai 2 | BWR-5 | BWR | 1060 | 13/03/1978 | 0.00 | 0.00 |
| Tomari 1 | M (2-loop) | PWR | 550 | 06/12/1988 | 0.00 | 0.00 |
| Tomari 2 | M (2-loop) | PWR | 550 | 27/08/1990 | 0.00 | 0.00 |
| Tomari 3 | M (3-loop) | PWR | 866 | 20/03/2009 | 0.00 | 0.00 |
| Tsuruga 2 | M (4-loop) | PWR | 1108 | 19/06/1986 | 0.00 | 0.00 |
All Under Construction Reactors
| Reactor Name | Model | Process | Capacity (MWe) | Construction Start |
|---|---|---|---|---|
| Ohma | ABWR | BWR | 1328 | 07/05/2010 |
| Shimane 3 | ABWR | BWR | 1325 | 24/10/2006 |
All Permanent Shutdown Reactors
| Reactor Name | Model | Process | Net Capacity (MWe) | Permanent Shutdown |
|---|---|---|---|---|
| Fugen ATR | ATR | HWLWR | 148 | 29/03/2003 |
| Fukushima Daiichi 1 | BWR-3 | BWR | 439 | 19/05/2011 |
| Fukushima Daiichi 2 | BWR-4 | BWR | 760 | 19/05/2011 |
| Fukushima Daiichi 3 | BWR-4 | BWR | 760 | 19/05/2011 |
| Fukushima Daiichi 4 | BWR-4 | BWR | 760 | 19/05/2011 |
| Fukushima Daiichi 5 | BWR-4 | BWR | 760 | 17/12/2013 |
| Fukushima Daiichi 6 | BWR-5 | BWR | 1067 | 17/12/2013 |
| Fukushima Daini 1 | BWR-5 | BWR | 1067 | 30/09/2019 |
| Fukushima Daini 2 | BWR-5 | BWR | 1067 | 30/09/2019 |
| Fukushima Daini 3 | BWR-5 | BWR | 1067 | 30/09/2019 |
| Fukushima Daini 4 | BWR-5 | BWR | 1067 | 30/09/2019 |
| Genkai 1 | M (2-loop) | PWR | 529 | 27/04/2015 |
| Genkai 2 | M (2-loop) | PWR | 529 | 09/04/2019 |
| Hamaoka 1 | BWR-4 | BWR | 516 | 30/01/2009 |
| Hamaoka 2 | BWR-4 | BWR | 814 | 30/01/2009 |
| Ikata 1 | M (2-loop) | PWR | 538 | 10/05/2016 |
| Ikata 2 | M (2-loop) | PWR | 538 | 23/05/2018 |
| Japan Power Demonstration Reactor (JPDR) | BWR-1 | BWR | 12 | 18/03/1976 |
| Mihama 1 | W (2-loop) | PWR | 320 | 27/04/2015 |
| Mihama 2 | M (2-loop) | PWR | 470 | 27/04/2015 |
| Monju | - | FBR | 246 | 05/12/2017 |
| Ohi 1 | W (4-loop) | PWR | 1120 | 01/03/2018 |
| Ohi 2 | W (4-loop) | PWR | 1120 | 01/03/2018 |
| Onagawa 1 | BWR-4 | BWR | 498 | 21/12/2018 |
| Shimane 1 | BWR-3 | BWR | 439 | 30/04/2015 |
| Tokai 1 | MAGNOX | GCR | 137 | 31/03/1998 |
| Tsuruga 1 | BWR-2 | BWR | 340 | 27/04/2015 |