Last update at: 2024-10-13T11:00:00+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
< 1 2 3 4 5 >
Aldbrough	ALD_000000000000000000927_002	Inactive	Unplanned	Injection unavailability	2024-05-25T19:37:23+01:00	2024-05-24T15:30:00+01:00	2024-05-25T19:30:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Loss of Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000927_001	Dismissed	Unplanned	Injection unavailability	2024-05-24T15:35:01+01:00	2024-05-24T15:30:00+01:00	2024-05-29T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Loss of Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000924_002	Dismissed	Unplanned	Injection unavailability	2024-05-22T09:29:47+01:00	2024-05-24T18:00:00+01:00	2024-05-26T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000924_001	Dismissed	Unplanned	Injection unavailability	2024-05-21T14:43:53+01:00	2024-05-24T18:00:00+01:00	2024-05-26T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000911_002	Inactive	Unplanned	Injection unavailability	2024-04-18T15:39:27+01:00	2024-04-15T13:20:00+01:00	2024-04-18T15:37:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Injection Comp 2 - 2nd Stage cooling failure. NG 908. rev 5702.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000911_001	Dismissed	Unplanned	Injection unavailability	2024-04-18T13:57:40+01:00	2024-04-15T13:20:00+01:00	2024-04-19T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Injection Comp 2 - 2nd Stage cooling failure. NG 908. rev 5702.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000908_002	Inactive	Unplanned	Injection unavailability	2024-04-18T13:02:32+01:00	2024-04-15T13:20:00+01:00	2024-04-18T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Injection Comp 2 - 2nd Stage cooling failure.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000908_001	Dismissed	Unplanned	Injection unavailability	2024-04-15T13:21:20+01:00	2024-04-15T13:20:00+01:00	2024-04-18T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Injection Comp 2 - 2nd Stage cooling failure.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000893_002	Inactive	Unplanned	Injection unavailability	2024-02-26T18:27:54+00:00	2024-02-26T17:45:00+00:00	2024-02-26T18:30:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000893_001	Dismissed	Unplanned	Injection unavailability	2024-02-26T17:45:57+00:00	2024-02-26T17:45:00+00:00	2024-02-26T22:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000892_002	Inactive	Planned	Injection unavailability	2024-02-14T18:16:49+00:00	2024-02-14T05:00:00+00:00	2024-02-14T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1 HP BD valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000892_001	Dismissed	Planned	Injection unavailability	2024-02-13T15:01:09+00:00	2024-02-14T05:00:00+00:00	2024-02-14T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1 HP BD valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000887_002	Dismissed	Planned	Injection unavailability	2024-02-08T03:16:10+00:00	2024-02-08T05:00:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2 blow down valve change.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000887_001	Dismissed	Planned	Injection unavailability	2024-02-07T09:56:35+00:00	2024-02-08T05:00:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2 blow down valve change.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000884_002	Inactive	Unplanned	Injection unavailability	2024-02-06T16:05:23+00:00	2024-02-06T09:35:00+00:00	2024-02-06T16:05:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 outage due to failed cooling fan	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000884_001	Dismissed	Unplanned	Injection unavailability	2024-02-06T09:36:58+00:00	2024-02-06T09:35:00+00:00	2024-02-06T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 outage due to failed cooling fan	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000873_005	Inactive	Unplanned	Injection unavailability	2024-01-12T15:26:58+00:00	2024-01-11T11:45:00+00:00	2024-01-12T15:27:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000873_004	Dismissed	Unplanned	Injection unavailability	2024-01-11T23:47:43+00:00	2024-01-11T11:45:00+00:00	2024-01-12T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000865_001	Active	Planned	Injection unavailability	2023-11-28T09:32:01+00:00	2026-10-24T05:00:00+01:00	2026-10-24T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC- Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000864_001	Active	Planned	Injection unavailability	2023-11-28T09:29:35+00:00	2026-10-25T05:00:00+00:00	2026-11-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-3 outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000863_001	Active	Planned	Injection unavailability	2023-11-28T09:26:33+00:00	2026-10-19T05:00:00+01:00	2026-10-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2 outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000862_001	Active	Planned	Injection unavailability	2023-11-28T09:23:56+00:00	2026-10-12T05:00:00+01:00	2026-10-16T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1 outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000857_001	Active	Planned	Injection unavailability	2023-11-27T14:25:31+00:00	2025-10-27T05:00:00+00:00	2025-10-27T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1. Siemens Maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000856_001	Active	Planned	Injection unavailability	2023-11-27T14:23:04+00:00	2025-10-28T05:00:00+00:00	2025-11-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-3. Level 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000855_001	Active	Planned	Injection unavailability	2023-11-27T14:21:39+00:00	2025-10-20T05:00:00+01:00	2025-10-26T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2. Level 2.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000854_001	Active	Planned	Injection unavailability	2023-11-27T14:20:09+00:00	2025-10-13T05:00:00+01:00	2025-10-17T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1 Level 1.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000836_002	Inactive	Planned	Injection unavailability	2023-11-10T17:02:31+00:00	2023-11-09T12:00:00+00:00	2023-11-10T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 2. Motor air purge.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000836_001	Dismissed	Planned	Injection unavailability	2023-11-08T15:24:31+00:00	2023-11-09T12:00:00+00:00	2023-11-10T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 2. Motor air purge.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000483_005	Active	Planned	Injection unavailability	2023-11-10T08:26:00+00:00	2024-10-27T05:00:00+00:00	2024-11-09T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. L3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000483_004	Dismissed	Planned	Injection unavailability	2023-11-10T08:17:37+00:00	2024-10-29T05:00:00+00:00	2024-11-09T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. L3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000483_003	Dismissed	Planned	Injection unavailability	2023-11-01T08:36:22+00:00	2024-10-29T05:00:00+00:00	2024-11-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. L3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000483_002	Dismissed	Planned	Injection unavailability	2023-07-06T11:08:36+01:00	2024-10-14T05:00:00+01:00	2024-10-19T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000483_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:37:34+01:00	2024-10-14T05:00:00+01:00	2024-10-19T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000834_002	Active	Planned	Injection unavailability	2023-11-10T08:09:26+00:00	2024-10-26T05:00:00+01:00	2024-10-26T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3. Siemens maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000834_001	Dismissed	Planned	Injection unavailability	2023-11-01T08:41:27+00:00	2024-11-28T05:00:00+00:00	2024-11-28T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3. Siemens maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000484_005	Active	Planned	Injection unavailability	2023-11-10T08:06:56+00:00	2024-10-21T05:00:00+01:00	2024-10-25T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. L1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000484_004	Dismissed	Planned	Injection unavailability	2023-11-10T08:03:27+00:00	2024-10-21T05:00:00+01:00	2024-11-25T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. L1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000484_003	Dismissed	Planned	Injection unavailability	2023-11-01T08:34:57+00:00	2024-10-21T05:00:00+01:00	2024-11-27T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. L2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000484_002	Dismissed	Planned	Injection unavailability	2023-07-06T11:09:25+01:00	2024-10-27T05:00:00+00:00	2024-11-03T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000484_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:40:06+01:00	2024-10-27T05:00:00+00:00	2024-11-03T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000476_003	Inactive	Planned	Injection unavailability	2023-11-09T13:02:32+00:00	2023-10-29T05:00:00+00:00	2023-11-09T12:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000476_002	Dismissed	Planned	Injection unavailability	2023-11-07T15:14:46+00:00	2023-10-29T05:00:00+00:00	2023-11-09T12:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000476_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:14:57+01:00	2023-10-29T05:00:00+00:00	2023-11-08T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000485_003	Active	Planned	Injection unavailability	2023-11-01T08:33:49+00:00	2024-10-14T05:00:00+01:00	2024-10-18T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage. L1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000485_002	Dismissed	Planned	Injection unavailability	2023-07-06T11:10:28+01:00	2024-10-21T05:00:00+01:00	2024-10-26T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000485_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:42:39+01:00	2024-10-21T05:00:00+01:00	2024-10-26T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_006	Inactive	Planned	Injection unavailability	2023-10-29T16:12:12+00:00	2023-10-28T05:00:00+01:00	2023-10-29T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_005	Dismissed	Planned	Injection unavailability	2023-10-29T13:34:03+00:00	2023-10-28T05:00:00+01:00	2023-10-29T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_004	Dismissed	Planned	Injection unavailability	2023-10-29T11:08:05+00:00	2023-10-28T05:00:00+01:00	2023-10-29T14:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_003	Dismissed	Planned	Injection unavailability	2023-10-28T20:37:08+01:00	2023-10-28T05:00:00+01:00	2023-10-29T12:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	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.