Last update at: 2024-04-27T14:30:00+01:00

**Please note that the last update time shown is rounded to the next market interval of 30 minutes

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Gas Storage: Historical Outages (https://www.ssehl.co.uk/HALO/)

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	Event Status			Type Of Unavailability			Type of Event
	Affected Asset or Unit			Affected Asset or Unit EIC Code

Affected Asset or Unit	Message ID	Event Status	Type Of Unavailability	Type Of Event	Publication Date/Time	Event Start	Event Stop	Unit of Measurement	Unavailable Capacity	Available Capacity	Technical Capacity	Reason Of Unavailability	Remarks	Balancing Zone	Affected Asset or Unit EIC Code	Market Participant	Market Participant Code
< 3 4 5 6 7 >
Aldbrough	ALD_000000000000000000467_003	Dismissed	Planned	Withdrawal unavailability	2022-05-02T03:13:47+01:00	2022-06-04T05:00:00+01:00	2022-06-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_002	Dismissed	Planned	Withdrawal unavailability	2021-10-06T22:34:05+01:00	2022-05-01T05:00:00+01:00	2022-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T15:50:13+01:00	2022-05-06T05:00:00+01:00	2022-05-20T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000461_002	Inactive	Planned	Withdrawal unavailability	2021-06-15T18:14:00+01:00	2021-06-01T05:00:00+01:00	2021-06-15T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000461_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T13:55:44+01:00	2021-06-01T05:00:00+01:00	2021-06-15T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000717_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-23T12:14:34+00:00	2022-12-22T20:10:00+00:00	2022-12-23T12:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	Prod Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000717_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-22T20:14:18+00:00	2022-12-22T20:10:00+00:00	2022-12-23T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	Prod Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_006	Inactive	Planned	Withdrawal unavailability	2021-05-08T06:01:53+01:00	2021-04-29T13:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_005	Dismissed	Planned	Withdrawal unavailability	2021-04-29T12:14:48+01:00	2021-04-29T13:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_004	Dismissed	Planned	Withdrawal unavailability	2021-03-12T10:30:05+00:00	2021-05-01T05:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_003	Dismissed	Planned	Withdrawal unavailability	2020-12-01T10:21:49+00:00	2021-05-02T05:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_002	Dismissed	Planned	Withdrawal unavailability	2020-11-27T12:01:09+00:00	2021-05-02T05:00:00+01:00	2021-05-08T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_004	Active	Planned	Withdrawal unavailability	2024-02-26T12:32:55+00:00	2024-06-08T05:00:00+01:00	2024-06-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_003	Dismissed	Planned	Withdrawal unavailability	2023-11-01T08:59:38+00:00	2024-06-01T05:00:00+01:00	2024-06-18T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_002	Dismissed	Planned	Withdrawal unavailability	2023-07-06T11:02:26+01:00	2024-05-10T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:32:14+01:00	2024-05-10T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000474_003	Inactive	Planned	Withdrawal unavailability	2023-05-22T19:02:32+01:00	2023-05-01T05:00:00+01:00	2023-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000474_002	Dismissed	Planned	Withdrawal unavailability	2023-01-16T10:53:07+00:00	2023-05-01T05:00:00+01:00	2023-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000474_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:09:58+01:00	2023-05-05T05:00:00+01:00	2023-05-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000467_002	Dismissed	Planned	Withdrawal unavailability	2021-10-06T22:33:43+01:00	2022-06-04T05:00:00+01:00	2022-06-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000467_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T15:46:33+01:00	2022-05-20T05:00:00+01:00	2022-06-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_004	Inactive	Planned	Withdrawal unavailability	2022-05-22T19:02:31+01:00	2022-05-01T05:00:00+01:00	2022-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_003	Dismissed	Planned	Withdrawal unavailability	2022-05-02T03:11:33+01:00	2022-05-01T05:00:00+01:00	2022-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T13:51:55+01:00	2021-05-06T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000913_002	Inactive	Planned	Withdrawal unavailability	2024-04-24T12:24:59+01:00	2024-04-24T09:00:00+01:00	2024-04-24T12:25:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod T1 1MV5110 Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000913_001	Dismissed	Planned	Withdrawal unavailability	2024-04-23T17:05:38+01:00	2024-04-24T09:00:00+01:00	2024-04-24T13:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod T1 1MV5110 Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_003	Inactive	Unplanned	Injection unavailability	2022-01-10T22:53:09+00:00	2022-01-10T06:30:00+00:00	2022-01-10T22:55:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site/ Nitrogen unit failure caused by power loss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_002	Dismissed	Unplanned	Injection unavailability	2022-01-10T11:19:13+00:00	2022-01-10T06:30:00+00:00	2022-01-12T18:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site/ Nitrogen unit failure caused by power loss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000633_003	Inactive	Unplanned	Withdrawal unavailability	2022-01-10T16:23:04+00:00	2022-01-10T06:30:00+00:00	2022-01-10T16:23:00+00:00	GWh/d	342.3	0	342.3	Failure	Power Loss - Full Site/ Loss of nitrogen unit due to powerloss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000633_002	Dismissed	Unplanned	Withdrawal unavailability	2022-01-10T11:20:31+00:00	2022-01-10T06:30:00+00:00	2022-01-10T20:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Power Loss - Full Site/ Loss of nitrogen unit due to powerloss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000633_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-10T06:44:48+00:00	2022-01-10T06:30:00+00:00	2022-01-10T12:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Power Loss - Full Site	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_001	Dismissed	Unplanned	Injection unavailability	2022-01-10T06:43:39+00:00	2022-01-10T06:30:00+00:00	2022-01-10T12:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000712_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-16T00:50:32+00:00	2022-12-16T00:37:00+00:00	2022-12-16T00:52:00+00:00	GWh/d	342.3	0	342.3	Failure	Plant Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000712_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T00:39:01+00:00	2022-12-16T00:37:00+00:00	2022-12-16T01:30:00+00:00	GWh/d	342.3	0	342.3	Failure	Plant Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000885_003	Inactive	Unplanned	Withdrawal unavailability	2024-02-08T07:26:46+00:00	2024-02-06T23:30:00+00:00	2024-02-08T01:41:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000885_002	Dismissed	Unplanned	Withdrawal unavailability	2024-02-07T14:29:08+00:00	2024-02-06T23:30:00+00:00	2024-02-16T18:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000885_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-06T22:32:16+00:00	2024-02-06T23:30:00+00:00	2024-02-07T17:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000897_003	Inactive	Planned	Withdrawal unavailability	2024-04-09T08:52:40+01:00	2024-03-20T18:00:00+00:00	2024-04-09T08:50:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 Reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000897_002	Dismissed	Planned	Withdrawal unavailability	2024-03-11T07:29:21+00:00	2024-03-20T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 Reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000897_001	Dismissed	Planned	Withdrawal unavailability	2024-03-06T16:52:32+00:00	2024-03-20T18:00:00+00:00	2024-06-01T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 Reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000905_001	Active	Planned	Withdrawal unavailability	2024-04-09T08:51:41+01:00	2024-04-09T08:50:00+01:00	2025-07-01T05:00:00+01:00	GWh/d	40	90	130	Planned Outage	Phase 6 Reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_005	Inactive	Planned	Withdrawal unavailability	2024-03-19T07:07:54+00:00	2024-02-13T18:00:00+00:00	2024-03-19T07:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_004	Dismissed	Planned	Withdrawal unavailability	2024-03-06T14:04:53+00:00	2024-02-13T18:00:00+00:00	2024-03-19T07:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_003	Dismissed	Planned	Withdrawal unavailability	2024-02-12T08:13:23+00:00	2024-02-13T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_002	Dismissed	Planned	Withdrawal unavailability	2024-02-07T14:29:46+00:00	2024-02-16T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_001	Dismissed	Planned	Withdrawal unavailability	2024-02-06T22:40:14+00:00	2024-02-07T17:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_005	Inactive	Planned	Withdrawal unavailability	2024-02-07T00:13:59+00:00	2024-02-06T16:25:00+00:00	2024-02-06T23:30:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_004	Dismissed	Planned	Withdrawal unavailability	2024-02-06T22:36:39+00:00	2024-02-06T16:25:00+00:00	2024-02-06T23:30:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_003	Dismissed	Planned	Withdrawal unavailability	2024-02-06T16:26:08+00:00	2024-02-06T16:25:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_002	Dismissed	Planned	Withdrawal unavailability	2024-02-05T15:06:11+00:00	2024-02-06T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK

The information that is set out on these pages is provided pursuant to Regulation (EU) 1227/2011 and associated guidance. The provision, reading or use of the information neither establishes a contract nor creates a unilateral guarantee. Nor does the provision of information constitute the furnishing of investment advice, or an invitation to buy or sell goods, derivatives or (other) financial instruments. If any provisions of this disclaimer shall be unlawful, void or for any reason unenforceable then that provision shall be deemed severable and shall not affect the validity and enforceability of the remaining provisions. This disclaimer is given on the basis of English law and shall be subject to the exclusive jurisdictions of the English courts. Historical UMMs as previously published can be located within the public area of our website – https://www.ssehl.co.uk/HALO. An explanation of how we calculate our maximum technical capacities and how we measure is available from https://www.ssehl.co.uk/HALO.