JEPX HJKS · OFFICIAL DISCLOSURES

Outages &
maintenance.

A reactor-by-reactor history of planned maintenance, unplanned stoppages and output reductions disclosed to Japan's wholesale power market.

Interpretation boundary

HJKS is the primary market-disclosure record. It does not describe every maintenance task. Technical detail and actual generation should be cross-checked against operator notices, NRA records and OCCTO measurements.

ALL DISCLOSURES215

Historical and scheduled records

UNPLANNED OUTAGES5

HJKS classification

UPCOMING28

Future-dated disclosed events

FLEET CALENDAR

When reactor events cluster

YEAR

Planned Output reduction UnplannedCell intensity represents disclosure count, not outage duration.

REACTORJANFEBMARAPRMAYJUNJULAUGSEPOCTNOVDEC

FLEET EVENT REGISTER

Reactor timeline

Causes are translated into English; the original Japanese disclosure is retained below each record. Blank restoration dates remain visibly unavailable.

REACTOREVENTPERIOD215 records

1 Sept 2028, 09:00SCHEDULED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Dec 2028
SOURCE UPDATED: 26 Jan 2026, 15:36

14 Aug 2028SCHEDULED

Planned outage

Kashiwazaki-Kariwa 6

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 12 Oct 2028
SOURCE UPDATED: 16 Apr 2026, 17:35

17 Jul 2028, 09:00SCHEDULED

Planned outage

Sendai 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Nov 2028
SOURCE UPDATED: 26 Jan 2026, 15:33

15 Mar 2028, 17:00SCHEDULED

Output reduction

Takahama 3

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 10 Apr 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

15 Mar 2028, 10:00SCHEDULED

Planned outage

Ohi 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 2 Sept 2028
SOURCE UPDATED: 29 Oct 2026, 17:20

7 Mar 2028, 09:00SCHEDULED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 3 Jul 2028
SOURCE UPDATED: 26 Jan 2026, 15:27

11 Feb 2028, 18:00SCHEDULED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 8 Mar 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

10 Feb 2028, 17:00SCHEDULED

Output reduction

Takahama 2

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 6 Mar 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

29 Dec 2027SCHEDULED

Output reduction

Shimane 2

Other output reduction

Periodic operator inspection

CAPACITY: 820 MW
REDUCTION: 43.278 MW
EXPECTED RESTORATION: 26 Jan 2028
SOURCE UPDATED: 6 Nov 2026, 18:12

29 Oct 2027, 09:00SCHEDULED

Planned outage

Genkai 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Feb 2028
SOURCE UPDATED: 26 Jan 2026, 15:22

25 Oct 2027, 11:00SCHEDULED

Planned outage

Takahama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Mar 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

30 Sept 2027, 09:00SCHEDULED

Planned outage

Shimane 2

Periodic inspection / maintenance

Periodic operator inspection

CAPACITY: 820 MW
REDUCTION: —
EXPECTED RESTORATION: 28 Dec 2027
SOURCE UPDATED: 6 Nov 2026, 18:10

21 Sept 2027, 11:00SCHEDULED

Planned outage

Mihama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 11 Feb 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

29 Aug 2027, 17:00SCHEDULED

Output reduction

Ohi 4

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 590 MW
EXPECTED RESTORATION: 24 Sept 2027
SOURCE UPDATED: 8 Jan 2026, 09:59

15 Aug 2027, 11:00SCHEDULED

Planned outage

Takahama 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Feb 2028
SOURCE UPDATED: 8 Jan 2026, 09:59

25 Jul 2027, 17:00SCHEDULED

Output reduction

Takahama 1

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 19 Aug 2027
SOURCE UPDATED: 8 Jan 2026, 09:59

11 Jul 2027, 17:00SCHEDULED

Output reduction

Takahama 4

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 5 Aug 2027
SOURCE UPDATED: 8 Jan 2026, 09:59

8 Jul 2027, 01:00SCHEDULED

Planned outage

Onagawa 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 30 Aug 2028
SOURCE UPDATED: 29 Sept 2026, 11:26

11 Jun 2027, 10:00SCHEDULED

Planned outage

Ohi 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 29 Aug 2027
SOURCE UPDATED: 8 Jan 2026, 09:59

27 May 2027, 09:00SCHEDULED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 2 Aug 2027
SOURCE UPDATED: 29 Jan 2025, 15:00

17 Apr 2027SCHEDULED

Planned outage

Kashiwazaki-Kariwa 6

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Jun 2027
SOURCE UPDATED: 16 Apr 2026, 17:34

20 Feb 2027, 00:20SCHEDULED

Planned outage

Ikata 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 20 May 2027
SOURCE UPDATED: 3 Mar 2026, 14:06

9 Feb 2027, 09:00SCHEDULED

Planned outage

Sendai 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 23 May 2027
SOURCE UPDATED: 26 Jan 2026, 15:30

22 Jan 2027, 17:00SCHEDULED

Output reduction

Ohi 3

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 56 MW
EXPECTED RESTORATION: 16 Feb 2027
SOURCE UPDATED: 29 Oct 2026, 19:35

20 Dec 2026, 11:00SCHEDULED

Planned outage

Takahama 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 25 Jul 2027
SOURCE UPDATED: 8 Jan 2026, 10:50

14 Nov 2026, 11:00SCHEDULED

Planned outage

Takahama 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Jul 2027
SOURCE UPDATED: 27 Aug 2026, 17:24

13 Nov 2026, 17:00SCHEDULED

Output reduction

Takahama 3

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 86 MW
EXPECTED RESTORATION: 8 Dec 2026
SOURCE UPDATED: 9 Nov 2026, 16:05

12 Nov 2026, 09:00SCHEDULED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Jan 2027
SOURCE UPDATED: 5 Oct 2026, 14:22

29 Oct 2026, 15:00DISCLOSED

Output reduction

Genkai 3

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 1 Nov 2026
SOURCE UPDATED: 22 Oct 2026, 15:18

29 Oct 2026, 03:00DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Output reduction; cause not specified

CAPACITY: 825 MW
REDUCTION: 127 MW
EXPECTED RESTORATION: 1 Nov 2026
SOURCE UPDATED: 27 Oct 2026, 20:50

17 Oct 2026, 01:00DISCLOSED

Planned outage

Onagawa 2

Other outage

Other disclosed cause — see original Japanese record

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 29 Oct 2026
SOURCE UPDATED: 27 Oct 2026, 20:51

16 Oct 2026, 17:30DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Output reduction; cause not specified

CAPACITY: 825 MW
REDUCTION: 519 MW
EXPECTED RESTORATION: 17 Oct 2026
SOURCE UPDATED: 15 Oct 2026, 10:56

10 Oct 2026, 18:00DISCLOSED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 4 Nov 2026
SOURCE UPDATED: 9 Oct 2026, 17:29

5 Oct 2026, 10:00DISCLOSED

Planned outage

Ohi 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 22 Jan 2027
SOURCE UPDATED: 29 Oct 2026, 17:17

18 Sept 2026, 01:30DISCLOSED

Planned outage

Mihama 3

Equipment failure

Other disclosed cause — see original Japanese record

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Oct 2026
SOURCE UPDATED: 9 Oct 2026, 17:32

15 Sept 2026, 23:00DISCLOSED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 18 Sept 2026
SOURCE UPDATED: 17 Sept 2026, 21:52

18 Aug 2026, 13:00DISCLOSED

Output reduction

Shimane 2

Other output reduction

Periodic inspection

CAPACITY: 820 MW
REDUCTION: 30.965 MW
EXPECTED RESTORATION: 16 Sept 2026
SOURCE UPDATED: 9 Sept 2026, 13:36

8 Aug 2026, 23:56DISCLOSED

Unplanned outage

Ohi 3

Equipment failure

Generator equipment failure

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 22 Jan 2027
SOURCE UPDATED: 29 Oct 2026, 17:18

30 Jun 2026, 09:00DISCLOSED

Planned outage

Genkai 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 29 Oct 2026
SOURCE UPDATED: 26 Jan 2026, 15:19

21 Jun 2026, 17:00DISCLOSED

Output reduction

Takahama 2

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 43 MW
EXPECTED RESTORATION: 16 Jul 2026
SOURCE UPDATED: 9 Jun 2026, 09:49

16 Jun 2026, 10:00DISCLOSED

Planned outage

Mihama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Sept 2026
SOURCE UPDATED: 15 Sept 2026, 20:41

28 May 2026, 17:00DISCLOSED

Output reduction

Ohi 4

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 590 MW
EXPECTED RESTORATION: 22 Jun 2026
SOURCE UPDATED: 27 Jan 2025, 17:49

20 May 2026, 09:30DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Periodic inspection

CAPACITY: 825 MW
REDUCTION: 156.8 MW
EXPECTED RESTORATION: 9 Jun 2026
SOURCE UPDATED: 23 May 2026, 15:52

16 May 2026, 05:00DISCLOSED

Planned outage

Onagawa 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 20 May 2026
SOURCE UPDATED: 18 May 2026, 16:44

14 May 2026, 23:00DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Periodic inspection

CAPACITY: 825 MW
REDUCTION: 122 MW
EXPECTED RESTORATION: 16 May 2026
SOURCE UPDATED: 16 May 2026, 00:05

8 May 2026, 04:24DISCLOSED

Unplanned outage

Mihama 3

Equipment failure

Generator equipment failure

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 1 Sept 2026
SOURCE UPDATED: 1 Sept 2026, 17:22

7 Apr 2026, 11:00DISCLOSED

Planned outage

Takahama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 13 Nov 2026
SOURCE UPDATED: 9 Nov 2026, 16:03

30 Mar 2026, 18:00DISCLOSED

Output reduction

Sendai 2

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 3 Apr 2026
SOURCE UPDATED: 23 Mar 2026, 13:42

24 Mar 2026, 22:00DISCLOSED

Output reduction

Kashiwazaki-Kariwa 6

Other output reduction

Adjustment operation

CAPACITY: 1,356 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 25 Mar 2026
SOURCE UPDATED: 30 Mar 2026, 14:00

14 Mar 2026, 12:30DISCLOSED

Unplanned outage

Kashiwazaki-Kariwa 6

Equipment failure

Equipment failure

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 22 Mar 2026
SOURCE UPDATED: 19 Mar 2026, 15:33

4 Mar 2026, 10:00DISCLOSED

Planned outage

Ohi 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 28 May 2026
SOURCE UPDATED: 7 Jan 2026, 18:14

16 Feb 2026, 22:00DISCLOSED

Output reduction

Kashiwazaki-Kariwa 6

Other output reduction

Test operation

CAPACITY: 1,356 MW
REDUCTION: 483 MW
EXPECTED RESTORATION: 18 Mar 2026
SOURCE UPDATED: 16 Feb 2026, 21:39

16 Feb 2026, 18:30DISCLOSED

Planned outage

Kashiwazaki-Kariwa 6

Other outage

Test operation

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 16 Feb 2026
SOURCE UPDATED: 16 Feb 2026, 02:38

16 Feb 2026, 02:30DISCLOSED

Output reduction

Kashiwazaki-Kariwa 6

Other output reduction

Test operation

CAPACITY: 1,356 MW
REDUCTION: 1,105 MW
EXPECTED RESTORATION: 16 Feb 2026
SOURCE UPDATED: 16 Feb 2026, 02:36

9 Feb 2026, 01:00DISCLOSED

Planned outage

Shimane 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 820 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Aug 2026
SOURCE UPDATED: 17 Aug 2026, 11:30

28 Jan 2026, 15:30DISCLOSED

Planned outage

Kashiwazaki-Kariwa 6

Other outage

Schedule postponed for equipment inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Feb 2026
SOURCE UPDATED: 10 Feb 2026, 17:33

28 Jan 2026, 14:00DISCLOSED

Planned outage

Kashiwazaki-Kariwa 6

Other outage

Schedule postponed for equipment inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Feb 2026
SOURCE UPDATED: 10 Feb 2026, 17:32

27 Jan 2026, 16:30DISCLOSED

Planned outage

Kashiwazaki-Kariwa 6

Other outage

Schedule postponed for equipment inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Feb 2026
SOURCE UPDATED: 10 Feb 2026, 17:32

24 Jan 2026, 09:00DISCLOSED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 30 Mar 2026
SOURCE UPDATED: 20 Jan 2026, 16:01

23 Jan 2026, 11:00DISCLOSED

Planned outage

Takahama 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 21 Jun 2026
SOURCE UPDATED: 29 Oct 2025, 08:11

14 Jan 2026, 01:00DISCLOSED

Planned outage

Onagawa 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 14 May 2026
SOURCE UPDATED: 24 Apr 2026, 10:21

13 Jan 2026, 17:30DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Ramp-down associated with shutdown work

CAPACITY: 825 MW
REDUCTION: 519 MW
EXPECTED RESTORATION: 14 Jan 2026
SOURCE UPDATED: 7 Jan 2026, 13:41

27 Dec 2025, 19:00DISCLOSED

Output reduction

Ikata 3

Other output reduction

Test operation

CAPACITY: 890 MW
REDUCTION: 344 MW
EXPECTED RESTORATION: 30 Dec 2025
SOURCE UPDATED: 23 Dec 2025, 17:11

21 Dec 2025, 14:30DISCLOSED

Output reduction

Sendai 1

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 420 MW
EXPECTED RESTORATION: 24 Dec 2025
SOURCE UPDATED: 22 Dec 2025, 08:11

2 Dec 2025, 17:00DISCLOSED

Output reduction

Takahama 1

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 26 Dec 2025
SOURCE UPDATED: 31 Jan 2025, 15:25

20 Oct 2025, 03:00DISCLOSED

Output reduction

Genkai 4

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 23 Oct 2025
SOURCE UPDATED: 17 Oct 2025, 13:43

19 Oct 2025, 17:00DISCLOSED

Output reduction

Takahama 4

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 13 Nov 2025
SOURCE UPDATED: 8 Sept 2025, 17:15

16 Oct 2025, 09:00DISCLOSED

Planned outage

Sendai 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 21 Dec 2025
SOURCE UPDATED: 14 Oct 2025, 14:41

11 Oct 2025, 00:20DISCLOSED

Planned outage

Ikata 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 27 Dec 2025
SOURCE UPDATED: 23 Dec 2025, 17:11

6 Sept 2025, 11:00DISCLOSED

Planned outage

Takahama 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 2 Dec 2025
SOURCE UPDATED: 28 Aug 2025, 10:13

1 Sept 2025, 18:00DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Startup ramp following shutdown work

CAPACITY: 825 MW
REDUCTION: 220 MW
EXPECTED RESTORATION: 3 Sept 2025
SOURCE UPDATED: 19 Aug 2025, 16:14

21 Aug 2025, 01:00DISCLOSED

Planned outage

Onagawa 2

Other outage

Shutdown for work

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 1 Sept 2025
SOURCE UPDATED: 19 Aug 2025, 10:28

20 Aug 2025, 17:30DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Ramp-down associated with shutdown work

CAPACITY: 825 MW
REDUCTION: 520 MW
EXPECTED RESTORATION: 21 Aug 2025
SOURCE UPDATED: 19 Aug 2025, 10:36

16 Aug 2025, 17:00DISCLOSED

Output reduction

Ohi 3

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 590 MW
EXPECTED RESTORATION: 10 Sept 2025
SOURCE UPDATED: 15 Apr 2025, 16:09

27 Jul 2025, 09:00DISCLOSED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Oct 2025
SOURCE UPDATED: 17 Oct 2025, 13:17

18 Jun 2025, 11:00DISCLOSED

Planned outage

Takahama 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 19 Oct 2025
SOURCE UPDATED: 8 Sept 2025, 17:13

15 Jun 2025, 20:00DISCLOSED

Output reduction

Genkai 3

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 19 Jun 2025
SOURCE UPDATED: 13 Jun 2025, 16:57

4 Jun 2025, 17:00DISCLOSED

Output reduction

Takahama 3

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 30 Jun 2025
SOURCE UPDATED: 26 Dec 2024, 16:42

1 Jun 2025, 10:00DISCLOSED

Planned outage

Ohi 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 16 Aug 2025
SOURCE UPDATED: 15 Apr 2025, 16:10

23 May 2025, 18:00DISCLOSED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 18 Jun 2025
SOURCE UPDATED: 17 Jan 2025, 14:14

28 Mar 2025, 09:00DISCLOSED

Planned outage

Genkai 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Jun 2025
SOURCE UPDATED: 12 Jun 2025, 23:34

2 Mar 2025, 11:00DISCLOSED

Planned outage

Mihama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 23 May 2025
SOURCE UPDATED: 17 Jan 2025, 14:09

22 Feb 2025, 19:00DISCLOSED

Output reduction

Ohi 4

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 590 MW
EXPECTED RESTORATION: 19 Mar 2025
SOURCE UPDATED: 22 Feb 2025, 18:49

22 Feb 2025, 11:00DISCLOSED

Planned outage

Takahama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 4 Jun 2025
SOURCE UPDATED: 26 Dec 2024, 15:36

10 Feb 2025, 17:00DISCLOSED

Output reduction

Takahama 2

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 100 MW
EXPECTED RESTORATION: 7 Mar 2025
SOURCE UPDATED: 29 Nov 2024, 15:10

23 Dec 2024, 13:00DISCLOSED

Output reduction

Shimane 2

Other output reduction

Periodic inspection

CAPACITY: 820 MW
REDUCTION: 39.365 MW
EXPECTED RESTORATION: 10 Jan 2025
SOURCE UPDATED: 20 Dec 2024, 13:34

14 Dec 2024, 10:00DISCLOSED

Planned outage

Ohi 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 22 Feb 2025
SOURCE UPDATED: 24 Oct 2024, 16:19

12 Dec 2024, 01:00DISCLOSED

Output reduction

Shimane 2

Other output reduction

Provisional grid synchronization

CAPACITY: 820 MW
REDUCTION: 576.92 MW
EXPECTED RESTORATION: 13 Dec 2024
SOURCE UPDATED: 13 Dec 2024, 13:25

7 Dec 2024, 06:30DISCLOSED

Output reduction

Onagawa 2

Other output reduction

Test operation

CAPACITY: 825 MW
REDUCTION: 176 MW
EXPECTED RESTORATION: 26 Dec 2024
SOURCE UPDATED: 6 Dec 2024, 16:16

30 Nov 2024, 18:00DISCLOSED

Output reduction

Sendai 2

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 4 Dec 2024
SOURCE UPDATED: 21 Nov 2024, 10:49

6 Nov 2024, 11:00DISCLOSED

Planned outage

Takahama 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Feb 2025
SOURCE UPDATED: 23 Oct 2024, 09:22

18 Oct 2024, 15:00DISCLOSED

Output reduction

Ikata 3

Other output reduction

Test operation

CAPACITY: 890 MW
REDUCTION: 282 MW
EXPECTED RESTORATION: 24 Oct 2024
SOURCE UPDATED: 15 Oct 2024, 13:17

15 Oct 2024, 17:40DISCLOSED

Planned outage

Mihama 3

Periodic inspection / maintenance

Inspection work

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 21 Nov 2024
SOURCE UPDATED: 19 Nov 2024, 15:31

14 Sept 2024, 09:00DISCLOSED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 30 Nov 2024
SOURCE UPDATED: 31 Jan 2024, 17:11

29 Aug 2024, 18:00DISCLOSED

Output reduction

Sendai 1

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 2 Sept 2024
SOURCE UPDATED: 27 Aug 2024, 09:30

28 Aug 2024, 23:30DISCLOSED

Output reduction

Takahama 1

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 35 MW
EXPECTED RESTORATION: 24 Sept 2024
SOURCE UPDATED: 28 Aug 2024, 13:54

19 Jul 2024, 00:20DISCLOSED

Planned outage

Ikata 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Oct 2024
SOURCE UPDATED: 15 Oct 2024, 13:14

14 Jun 2024, 09:00DISCLOSED

Planned outage

Sendai 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 29 Aug 2024
SOURCE UPDATED: 10 May 2024, 17:38

3 Jun 2024, 15:00DISCLOSED

Output reduction

Genkai 4

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 6 Jun 2024
SOURCE UPDATED: 28 May 2024, 15:42

2 Jun 2024, 10:00DISCLOSED

Planned outage

Takahama 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 28 Aug 2024
SOURCE UPDATED: 30 Jan 2024, 18:17

26 Apr 2024, 17:00DISCLOSED

Output reduction

Takahama 4

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 36 MW
EXPECTED RESTORATION: 21 May 2024
SOURCE UPDATED: 7 Mar 2024, 15:43

7 Apr 2024, 17:00DISCLOSED

Output reduction

Ohi 3

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 58 MW
EXPECTED RESTORATION: 2 May 2024
SOURCE UPDATED: 26 Dec 2023, 17:39

27 Mar 2024, 01:00DISCLOSED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 3 Jun 2024
SOURCE UPDATED: 31 Jan 2024, 17:08

10 Feb 2024, 10:00DISCLOSED

Planned outage

Ohi 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 7 Apr 2024
SOURCE UPDATED: 26 Dec 2023, 17:33

2 Feb 2024, 15:00DISCLOSED

Output reduction

Genkai 3

Periodic inspection / maintenance

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 5 Feb 2024
SOURCE UPDATED: 22 Jan 2024, 17:49

22 Jan 2024, 09:05DISCLOSED

Output reduction

Takahama 1

Equipment-related reduction

Generator work

CAPACITY: 826 MW
REDUCTION: 496 MW
EXPECTED RESTORATION: 7 Feb 2024
SOURCE UPDATED: 6 Feb 2024, 15:31

20 Jan 2024, 18:00DISCLOSED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 60 MW
EXPECTED RESTORATION: 14 Feb 2024
SOURCE UPDATED: 4 Sept 2023, 18:34

25 Dec 2023, 17:00DISCLOSED

Output reduction

Takahama 3

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 36 MW
EXPECTED RESTORATION: 23 Jan 2024
SOURCE UPDATED: 21 Nov 2023, 16:12

16 Dec 2023, 11:00DISCLOSED

Planned outage

Takahama 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 26 Apr 2024
SOURCE UPDATED: 7 Mar 2024, 15:41

10 Nov 2023, 01:00DISCLOSED

Planned outage

Genkai 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 2 Feb 2024
SOURCE UPDATED: 7 Nov 2023, 15:16

27 Oct 2023, 17:00DISCLOSED

Output reduction

Ohi 4

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 59 MW
EXPECTED RESTORATION: 21 Nov 2023
SOURCE UPDATED: 28 Jun 2023, 18:31

25 Oct 2023, 11:00DISCLOSED

Planned outage

Mihama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Jan 2024
SOURCE UPDATED: 30 Jan 2023, 19:45

20 Sept 2023, 15:00DISCLOSED

Output reduction

Takahama 2

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 35 MW
EXPECTED RESTORATION: 16 Oct 2023
SOURCE UPDATED: 21 Jun 2023, 16:44

18 Sept 2023, 11:00DISCLOSED

Planned outage

Takahama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 25 Dec 2023
SOURCE UPDATED: 21 Nov 2023, 16:10

31 Aug 2023, 20:00DISCLOSED

Planned outage

Ohi 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 27 Oct 2023
SOURCE UPDATED: 28 Jun 2023, 18:29

2 Aug 2023, 15:00DISCLOSED

Output reduction

Takahama 1

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 35 MW
EXPECTED RESTORATION: 28 Aug 2023
SOURCE UPDATED: 21 Jun 2023, 16:42

18 Jul 2023, 18:00DISCLOSED

Output reduction

Sendai 2

Other output reduction

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 22 Jul 2023
SOURCE UPDATED: 12 Jul 2023, 17:07

26 May 2023, 23:30DISCLOSED

Output reduction

Ikata 3

Other output reduction

Test operation

CAPACITY: 890 MW
REDUCTION: 348 MW
EXPECTED RESTORATION: 30 May 2023
SOURCE UPDATED: 26 May 2023, 19:21

13 May 2023, 09:00DISCLOSED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Jul 2023
SOURCE UPDATED: 12 Jul 2023, 13:39

23 Apr 2023, 18:00DISCLOSED

Output reduction

Sendai 1

Other output reduction

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 27 Apr 2023
SOURCE UPDATED: 17 Apr 2023, 14:42

23 Feb 2023, 00:20DISCLOSED

Planned outage

Ikata 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 26 May 2023
SOURCE UPDATED: 22 May 2023, 19:14

16 Feb 2023, 09:00DISCLOSED

Planned outage

Sendai 1

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 23 Apr 2023
SOURCE UPDATED: 31 Jan 2023, 19:13

9 Feb 2023, 15:00DISCLOSED

Output reduction

Genkai 4

Other output reduction

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 12 Feb 2023
SOURCE UPDATED: 3 Feb 2023, 14:37

30 Jan 2023, 15:21DISCLOSED

Unplanned outage

Takahama 4

Equipment failure

Control rod drive system issue

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 25 Mar 2023
SOURCE UPDATED: 23 Mar 2023, 15:49

18 Dec 2022, 17:00DISCLOSED

Output reduction

Ohi 3

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 59 MW
EXPECTED RESTORATION: 12 Jan 2023
SOURCE UPDATED: 28 Sept 2022, 15:01

12 Dec 2022, 15:00DISCLOSED

Output reduction

Genkai 3

Other output reduction

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 556 MW
EXPECTED RESTORATION: 15 Dec 2022
SOURCE UPDATED: 7 Dec 2022, 13:49

6 Nov 2022, 15:00DISCLOSED

Output reduction

Takahama 4

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 37 MW
EXPECTED RESTORATION: 1 Dec 2022
SOURCE UPDATED: 1 Nov 2022, 15:42

12 Sept 2022, 01:00DISCLOSED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 9 Feb 2023
SOURCE UPDATED: 3 Feb 2023, 14:28

1 Sept 2022, 20:20DISCLOSED

Output reduction

Mihama 3

Other output reduction

Test operation

CAPACITY: 826 MW
REDUCTION: 61 MW
EXPECTED RESTORATION: 26 Sept 2022
SOURCE UPDATED: 29 Aug 2022, 15:32

23 Aug 2022, 10:00DISCLOSED

Planned outage

Ohi 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Dec 2022
SOURCE UPDATED: 22 Jul 2022, 15:08

26 Jul 2022, 17:00DISCLOSED

Output reduction

Takahama 3

Other output reduction

Test operation

CAPACITY: 870 MW
REDUCTION: 37 MW
EXPECTED RESTORATION: 19 Aug 2022
SOURCE UPDATED: 19 Jul 2022, 15:26

17 Jul 2022, 17:00DISCLOSED

Output reduction

Ohi 4

Other output reduction

Test operation

CAPACITY: 1,180 MW
REDUCTION: 57 MW
EXPECTED RESTORATION: 12 Aug 2022
SOURCE UPDATED: 1 Jul 2022, 15:30

13 Jul 2022, 03:00DISCLOSED

Output reduction

Genkai 4

Other output reduction

Output reduction; cause not specified

CAPACITY: 1,180 MW
REDUCTION: 516 MW
EXPECTED RESTORATION: 16 Jul 2022
SOURCE UPDATED: 6 Jul 2022, 14:32

13 Jun 2022, 18:00DISCLOSED

Output reduction

Sendai 2

Other output reduction

Output reduction; cause not specified

CAPACITY: 890 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 17 Jun 2022
SOURCE UPDATED: 7 Jun 2022, 14:10

8 Jun 2022, 11:00DISCLOSED

Planned outage

Takahama 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 6 Nov 2022
SOURCE UPDATED: 1 Nov 2022, 15:40

30 Apr 2022DISCLOSED

Planned outage

Genkai 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 13 Jul 2022
SOURCE UPDATED: 6 Jul 2022, 14:24

11 Mar 2022, 10:00DISCLOSED

Planned outage

Ohi 4

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 17 Jul 2022
SOURCE UPDATED: 1 Jul 2022, 15:29

1 Mar 2022, 11:00DISCLOSED

Planned outage

Takahama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 26 Jul 2022
SOURCE UPDATED: 19 Jul 2022, 15:24

21 Feb 2022DISCLOSED

Planned outage

Sendai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 13 Jun 2022
SOURCE UPDATED: 7 Jun 2022, 14:04

21 Jan 2022DISCLOSED

Planned outage

Genkai 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 12 Dec 2022
SOURCE UPDATED: 7 Dec 2022, 13:36

20 Dec 2021, 18:00DISCLOSED

Output reduction

Sendai 1

Adjustment operation

CAPACITY: 890 MW
REDUCTION: 365 MW
EXPECTED RESTORATION: 24 Dec 2021
SOURCE UPDATED: 14 Dec 2021, 14:41

15 Dec 2021, 22:00DISCLOSED

Output reduction

Ikata 3

Condenser water chamber cleaning

CAPACITY: 890 MW
REDUCTION: 178 MW
EXPECTED RESTORATION: 16 Dec 2021
SOURCE UPDATED: 16 Dec 2021, 16:14

6 Dec 2021, 18:00DISCLOSED

Output reduction

Ikata 3

Adjustment operation

CAPACITY: 890 MW
REDUCTION: 587 MW
EXPECTED RESTORATION: 9 Dec 2021
SOURCE UPDATED: 6 Dec 2021, 08:55

23 Oct 2021, 11:00DISCLOSED

Planned outage

Mihama 3

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 1 Sept 2022
SOURCE UPDATED: 29 Aug 2022, 15:28

17 Oct 2021, 09:00DISCLOSED

Planned outage

Sendai 1

Cause not disclosed

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Dec 2021
SOURCE UPDATED: 22 Sept 2021, 09:03

4 Aug 2021, 08:00DISCLOSED

Output reduction

Ohi 3

Seawater leak near a circulating-water pipe vent valve

CAPACITY: 1,180 MW
REDUCTION: 413 MW
EXPECTED RESTORATION: 10 Aug 2021
SOURCE UPDATED: 10 Aug 2021, 18:22

5 Jul 2021, 17:00DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 30 Jul 2021
SOURCE UPDATED: 21 May 2021, 15:54

29 Jun 2021, 15:00DISCLOSED

Planned outage

Mihama 3

Cause not disclosed

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 27 Jul 2021
SOURCE UPDATED: 21 May 2021, 15:46

15 Apr 2021, 17:00DISCLOSED

Planned outage

Takahama 4

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 13 May 2021
SOURCE UPDATED: 2 Apr 2021, 17:56

19 Mar 2021, 15:00DISCLOSED

Output reduction

Genkai 4

Adjustment operation

CAPACITY: 1,180 MW
REDUCTION: 511 MW
EXPECTED RESTORATION: 23 Mar 2021
SOURCE UPDATED: 12 Mar 2021, 11:38

10 Mar 2021, 17:00DISCLOSED

Planned outage

Takahama 3

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 5 Apr 2021
SOURCE UPDATED: 8 Mar 2021, 13:48

17 Jan 2021, 19:00DISCLOSED

Planned outage

Ohi 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 12 Feb 2021
SOURCE UPDATED: 14 Jan 2021, 17:20

24 Dec 2020, 23:00DISCLOSED

Output reduction

Sendai 2

Adjustment operation

CAPACITY: 890 MW
REDUCTION: 372 MW
EXPECTED RESTORATION: 28 Dec 2020
SOURCE UPDATED: 18 Dec 2020, 15:21

19 Dec 2020, 01:00DISCLOSED

Planned outage

Genkai 4

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 19 Mar 2021
SOURCE UPDATED: 22 Feb 2021, 17:13

23 Nov 2020, 14:00DISCLOSED

Output reduction

Genkai 3

Adjustment operation

CAPACITY: 1,180 MW
REDUCTION: 511 MW
EXPECTED RESTORATION: 27 Nov 2020
SOURCE UPDATED: 18 Nov 2020, 15:39

19 Nov 2020, 23:00DISCLOSED

Output reduction

Sendai 1

Adjustment operation

CAPACITY: 890 MW
REDUCTION: 361 MW
EXPECTED RESTORATION: 24 Nov 2020
SOURCE UPDATED: 13 Nov 2020, 13:06

3 Nov 2020, 10:00DISCLOSED

Planned outage

Ohi 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 17 Jan 2021
SOURCE UPDATED: 30 Sept 2020, 10:09

7 Oct 2020, 11:00DISCLOSED

Planned outage

Takahama 4

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Apr 2021
SOURCE UPDATED: 2 Apr 2021, 17:56

26 Sept 2020, 23:59DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 26 Sept 2020
SOURCE UPDATED: 7 Sept 2020, 18:26

18 Sept 2020, 01:00DISCLOSED

Planned outage

Genkai 3

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 23 Nov 2020
SOURCE UPDATED: 30 Oct 2020, 10:25

31 Jul 2020, 23:59DISCLOSED

Planned outage

Ohi 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 31 Jul 2020
SOURCE UPDATED: 30 Jul 2020, 14:24

20 Jul 2020, 10:00DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 5 Jul 2021
SOURCE UPDATED: 21 May 2021, 15:48

15 Jul 2020, 23:59DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Jul 2020
SOURCE UPDATED: 1 May 2020, 17:23

20 May 2020, 09:00DISCLOSED

Planned outage

Sendai 2

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 24 Dec 2020
SOURCE UPDATED: 18 Dec 2020, 13:04

8 May 2020, 23:59DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 8 May 2020
SOURCE UPDATED: 1 May 2020, 17:25

16 Mar 2020, 09:00DISCLOSED

Planned outage

Sendai 1

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 19 Nov 2020
SOURCE UPDATED: 13 Nov 2020, 12:25

1 Feb 2020, 18:30DISCLOSED

Planned outage

Takahama 4

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 26 Feb 2020
SOURCE UPDATED: 29 Jan 2020, 16:35

6 Jan 2020, 11:00DISCLOSED

Planned outage

Takahama 3

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Mar 2021
SOURCE UPDATED: 3 Mar 2021, 19:34

26 Dec 2019DISCLOSED

Planned outage

Ikata 3

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 6 Dec 2021
SOURCE UPDATED: 22 Nov 2021, 15:47

18 Oct 2019, 01:00DISCLOSED

Planned outage

Sendai 2

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 26 Dec 2019
SOURCE UPDATED: 16 Oct 2019, 18:56

18 Sept 2019, 11:00DISCLOSED

Planned outage

Takahama 4

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 1 Feb 2020
SOURCE UPDATED: 26 Dec 2019, 18:35

15 Sept 2019, 17:00DISCLOSED

Planned outage

Ohi 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Oct 2019
SOURCE UPDATED: 14 Aug 2019, 18:17

16 Aug 2019, 01:00DISCLOSED

Planned outage

Genkai 4

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 24 Oct 2019
SOURCE UPDATED: 14 Aug 2019, 15:28

27 Jul 2019, 01:00DISCLOSED

Planned outage

Sendai 1

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 5 Oct 2019
SOURCE UPDATED: 25 Jul 2019, 16:58

4 Jul 2019, 23:00DISCLOSED

Planned outage

Ohi 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Sept 2019
SOURCE UPDATED: 14 Aug 2019, 18:16

28 Jun 2019, 17:00DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 23 Jul 2019
SOURCE UPDATED: 22 May 2019, 17:13

13 May 2019, 01:00DISCLOSED

Planned outage

Genkai 3

Periodic inspection

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 22 Jul 2019
SOURCE UPDATED: 9 May 2019, 15:54

11 Apr 2019, 10:00DISCLOSED

Planned outage

Ohi 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 28 Jun 2019
SOURCE UPDATED: 22 May 2019, 17:12

3 Aug 2018, 11:00DISCLOSED

Planned outage

Takahama 3

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 7 Dec 2018
SOURCE UPDATED: 1 Aug 2018, 17:21

18 May 2018, 11:00DISCLOSED

Planned outage

Takahama 4

Cause not disclosed

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 28 Sept 2018
SOURCE UPDATED: 27 Aug 2018, 17:40

23 Apr 2018DISCLOSED

Planned outage

Sendai 2

Cause not disclosed

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 31 Aug 2018
SOURCE UPDATED: 22 Mar 2018, 13:04

31 Mar 2018, 06:00DISCLOSED

Planned outage

Genkai 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 18 Apr 2018
SOURCE UPDATED: 18 Apr 2018, 11:06

29 Jan 2018, 01:00DISCLOSED

Planned outage

Sendai 1

Cause not disclosed

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 3 Jun 2018
SOURCE UPDATED: 3 Jun 2018, 00:42

3 Oct 2017, 00:20DISCLOSED

Planned outage

Ikata 3

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 30 Oct 2018
SOURCE UPDATED: 26 Sept 2018, 19:01

10 Mar 2016, 17:02DISCLOSED

Planned outage

Takahama 3

Court-ordered shutdown after regulatory approval to restart

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 4 Jul 2017
SOURCE UPDATED: 9 Jun 2017, 16:09

15 Sept 2013, 23:00DISCLOSED

Planned outage

Ohi 4

Earthquake disaster

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 5 Jun 2018
SOURCE UPDATED: 21 May 2018, 15:07

2 Sept 2013, 23:00DISCLOSED

Planned outage

Ohi 3

Earthquake disaster

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 10 Apr 2018
SOURCE UPDATED: 19 Mar 2018, 17:14

5 May 2012, 23:00DISCLOSED

Planned outage

Tomari 3

Periodic inspection

CAPACITY: 912 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 13 Apr 2016, 10:18

25 Mar 2012, 23:59DISCLOSED

Planned outage

Kashiwazaki-Kariwa 6

Other outage

Schedule postponed for equipment inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: 16 Feb 2026
SOURCE UPDATED: 16 Feb 2026, 02:33

22 Mar 2012DISCLOSED

Planned outage

Hamaoka 5

Cause not disclosed

CAPACITY: 1,380 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 20 Apr 2016, 15:13

27 Jan 2012, 01:00DISCLOSED

Planned outage

Shimane 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 820 MW
REDUCTION: —
EXPECTED RESTORATION: 23 Dec 2024
SOURCE UPDATED: 20 Dec 2024, 13:32

25 Jan 2012DISCLOSED

Planned outage

Hamaoka 4

Cause not disclosed

CAPACITY: 1,137 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 20 Apr 2016, 15:11

24 Jan 2012, 23:59DISCLOSED

Planned outage

Kashiwazaki-Kariwa 5

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:18

25 Dec 2011, 23:01DISCLOSED

Planned outage

Genkai 4

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 19 Jun 2018
SOURCE UPDATED: 19 Jun 2018, 10:02

25 Nov 2011, 23:02DISCLOSED

Planned outage

Takahama 2

Periodic inspection / maintenance

Shutdown for specialized severe-accident facility construction

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 20 Sept 2023
SOURCE UPDATED: 21 Jun 2023, 16:43

8 Oct 2011, 00:15DISCLOSED

Planned outage

Shika 1

Periodic inspection

CAPACITY: 540 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 14 Apr 2016, 09:12

10 Sept 2011DISCLOSED

Planned outage

Onagawa 3

Periodic inspection

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 28 Apr 2016, 20:53

29 Aug 2011DISCLOSED

Planned outage

Tsuruga 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,160 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 12 Jan 2023, 14:51

26 Aug 2011DISCLOSED

Planned outage

Tomari 2

Periodic inspection

CAPACITY: 579 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 13 Apr 2016, 10:17

22 Aug 2011, 23:59DISCLOSED

Planned outage

Kashiwazaki-Kariwa 7

Periodic inspection

CAPACITY: 1,356 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:21

5 Aug 2011, 23:57DISCLOSED

Planned outage

Kashiwazaki-Kariwa 1

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:11

21 Jul 2011, 23:00DISCLOSED

Planned outage

Takahama 4

Court-ordered shutdown after regulatory approval to restart

CAPACITY: 870 MW
REDUCTION: —
EXPECTED RESTORATION: 16 Jun 2017
SOURCE UPDATED: 25 May 2017, 19:02

21 May 2011DISCLOSED

Planned outage

Tokai 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 12 Jan 2023, 14:49

14 May 2011, 11:00DISCLOSED

Planned outage

Mihama 3

Earthquake disaster

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 29 Jun 2021
SOURCE UPDATED: 21 May 2021, 15:40

29 Apr 2011, 16:30DISCLOSED

Planned outage

Ikata 3

Periodic inspection

CAPACITY: 890 MW
REDUCTION: —
EXPECTED RESTORATION: 15 Aug 2016
SOURCE UPDATED: 5 Aug 2016, 15:39

22 Apr 2011DISCLOSED

Planned outage

Tomari 1

Periodic inspection

CAPACITY: 579 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 13 Apr 2016, 10:15

11 Mar 2011, 01:00DISCLOSED

Planned outage

Shika 2

Periodic inspection

CAPACITY: 1,206 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 14 Apr 2016, 09:13

6 Feb 2011, 01:00DISCLOSED

Planned outage

Higashidori 1

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 28 Apr 2016, 20:55

10 Jan 2011, 10:03DISCLOSED

Planned outage

Takahama 1

Periodic inspection / maintenance

Shutdown for specialized severe-accident facility construction

CAPACITY: 826 MW
REDUCTION: —
EXPECTED RESTORATION: 2 Aug 2023
SOURCE UPDATED: 21 Jun 2023, 16:32

11 Dec 2010, 01:00DISCLOSED

Planned outage

Genkai 3

Cause not disclosed

CAPACITY: 1,180 MW
REDUCTION: —
EXPECTED RESTORATION: 25 Mar 2018
SOURCE UPDATED: 22 Mar 2018, 13:05

29 Nov 2010, 06:06DISCLOSED

Planned outage

Hamaoka 3

Cause not disclosed

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 20 Apr 2016, 15:09

6 Nov 2010, 01:00DISCLOSED

Planned outage

Onagawa 2

Periodic inspection / maintenance

Periodic inspection

CAPACITY: 825 MW
REDUCTION: —
EXPECTED RESTORATION: 7 Dec 2024
SOURCE UPDATED: 6 Dec 2024, 16:16

11 Feb 2008DISCLOSED

Planned outage

Kashiwazaki-Kariwa 4

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:17

19 Sept 2007DISCLOSED

Planned outage

Kashiwazaki-Kariwa 3

Periodic inspection

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:15

5 Jul 2007, 03:15DISCLOSED

Unplanned outage

Kashiwazaki-Kariwa 2

Intermediate shutdown due to an oil leak in the turbine control system

CAPACITY: 1,100 MW
REDUCTION: —
EXPECTED RESTORATION: Not disclosed
SOURCE UPDATED: 18 Apr 2016, 14:13

Outages &maintenance.

When reactor events cluster

Reactor timeline

Outages &
maintenance.