Table: Japan nuclear operations: Kyushu Elec restarts Sendai No.1, Kansai restarts Takahama No.1

Kansai Electric Power Co

24/12/2025 08:36

TOKYO, Dec 24 (Reuters) - Kushu Electric Power 9508.T restarted the 890-megawatt (MW) No.1 reactor at its Sendai nuclear power station in southern Japan on December 21 after scheduled maintenance and refuelling, a company spokesperson said.

The unit had been shut since October 16.

Kansai Electric Power 9503.T also restarted the 826-MW No.1 reactor at its Takahama nuclear power station in western Japan on November 30 following scheduled maintenance and refuelling, a spokesperson said. The reactor had been offline since September 6.

As of Wednesday, Japan has 13 reactors in operation, with a combined capacity of 12,363 MW.

Many utilities are undergoing re-licensing process to meet stricter safety standards implemented after the 2011 Fukushima disaster. Prior to the disaster, Japan operated a total of 54 reactors.

The table below shows the status of Japan's nuclear power plants.

The regional utilities are: Chubu Electric Power 9502.T, Chugoku Electric Power 9504.T, Hokkaido Electric Power 9509.T, Hokuriku Electric Power 9505.T, Kansai Electric Power 9503.T, Kyushu Electric Power 9508.T, Shikoku Electric Power 9507.T, Tohoku Electric Power 9506.T and Tokyo Electric Power (Tepco) 9501.T.

In the table, the companies are referred to by their regional names.

Japan Atomic Power Company (Japco), a nuclear energy company, owns two reactors.

Company
Plant
Unit
MW
Status
Hokkaido
Tomari
1
579
Shutdown 22/4/11
Hokkaido
Tomari
2
579
Shutdown 26/8/11
Hokkaido
Tomari
3
912
Shutdown 5/5/12
Tohoku
Onagawa
2
825
Online 5/12/24
Tohoku
Onagawa
3
825
Shutdown 11/3/11
Tohoku
Higashidori
1
1,100
Shutdown 6/2/11
Tepco
Kashiwazaki-Kariwa
1
1,100
Shutdown 6/8/11
Tepco
Kashiwazaki-Kariwa
2
1,100
Shutdown 16/7/07
Tepco
Kashiwazaki-Kariwa
3
1,100
Shutdown 16/7/07
Tepco
Kashiwazaki-Kariwa
4
1,100
Shutdown 16/7/07
Tepco
Kashiwazaki-Kariwa
5
1,100
Shutdown 25/1/12
Tepco
Kashiwazaki-Kariwa
6
1,356
Shutdown 26/3/12
Tepco
Kashiwazaki-Kariwa
7
1,356
Shutdown 23/8/11
Chubu
Hamaoka
3
1,100
Shutdown 29/11/10
Chubu
Hamaoka
4
1,137
Shutdown 13/5/11
Chubu
Hamaoka
5
1,380
Shutdown 14/5/11
Hokuriku
Shika
1
540
Shutdown 1/3/11
Hokuriku
Shika
2
1,206
Shutdown 11/3/11
Kansai
Mihama
3
826
Online 21/5/25
Kansai
Takahama
1
826
Online 30/11/25
Kansai
Takahama
2
826
Online 8/2/25
Kansai
Takahama
3
870
Online 1/6/25
Kansai
Takahama
4
870
Online 16/10/25
Kansai
Ohi
3
1,180
Online 14/8/25
Kansai
Ohi
4
1,180
Online 20/2/25
Chugoku
Shimane
2
820
Online 22/12/24
Shikoku
Ikata
3
890
Shutdown 11/10/25
Kyushu
Genkai
3
1,180
Online 13/6/25
Kyushu
Genkai
4
1,180
Online 17/10/25
Kyushu
Sendai
1
890
Online 21/12/25
Kyushu
Sendai
2
890
Online 28/11/24
Japco
Tokai Daini
1
1,100
Shutdown 11/3/11
Japco
Tsuruga
2
1,160
Shutdown 7/5/11
Total
33,083


 (Reporting by Yuka Obayashi; Editing by Sonia Cheema)

 ((Yuka.Obayashi@thomsonreuters.com; +813-4520-1265;))