Last update at: 2024-04-25T18:30:00+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
< 1 2 3 4 5 >
Aldbrough	ALD_000000000000000000698_005	Inactive	Planned	Withdrawal unavailability	2022-11-04T00:57:46+00:00	2022-10-22T05:00:00+01:00	2022-11-04T00:57:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_004	Dismissed	Planned	Withdrawal unavailability	2022-10-30T09:47:15+00:00	2022-10-22T05:00:00+01:00	2022-11-04T18:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_003	Dismissed	Planned	Withdrawal unavailability	2022-10-30T01:21:29+00:00	2022-10-22T05:00:00+01:00	2022-10-30T11:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_002	Dismissed	Planned	Withdrawal unavailability	2022-10-27T13:27:45+01:00	2022-10-22T05:00:00+01:00	2022-10-30T05:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_001	Dismissed	Planned	Withdrawal unavailability	2022-10-15T16:29:04+01:00	2022-10-22T05:00:00+01:00	2022-10-29T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000695_002	Inactive	Unplanned	Withdrawal unavailability	2022-10-05T16:52:04+01:00	2022-10-05T10:15:00+01:00	2022-10-05T16:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000695_001	Dismissed	Unplanned	Withdrawal unavailability	2022-10-05T10:54:29+01:00	2022-10-05T10:15:00+01:00	2022-10-05T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000675_002	Inactive	Unplanned	Withdrawal unavailability	2022-06-28T22:24:03+01:00	2022-06-24T22:23:00+01:00	2022-06-28T22:23:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000675_001	Dismissed	Unplanned	Withdrawal unavailability	2022-06-24T22:32:08+01:00	2022-06-24T22:23:00+01:00	2022-07-01T19:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000467_004	Inactive	Planned	Withdrawal unavailability	2022-06-17T19:05:25+01:00	2022-06-04T05:00:00+01:00	2022-06-17T18:00:00+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_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_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_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_000000000000000000668_001	Dismissed	Unplanned	Withdrawal unavailability	2022-04-22T13:52:16+01:00	2022-04-22T13:00:00+01:00	2022-05-01T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000666_002	Inactive	Planned	Withdrawal unavailability	2022-04-14T19:01:52+01:00	2022-04-10T05:00:00+01:00	2022-04-14T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000666_001	Dismissed	Planned	Withdrawal unavailability	2022-04-06T13:37:59+01:00	2022-04-10T05:00:00+01:00	2022-04-14T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_004	Inactive	Unplanned	Withdrawal unavailability	2021-12-20T13:20:35+00:00	2021-12-19T23:30:00+00:00	2021-12-20T13:20:00+00:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_003	Dismissed	Unplanned	Withdrawal unavailability	2021-12-20T11:54:39+00:00	2021-12-19T23:30:00+00:00	2021-12-20T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_002	Dismissed	Unplanned	Withdrawal unavailability	2021-12-19T23:15:09+00:00	2021-12-19T23:30:00+00:00	2021-12-20T12:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000609_003	Inactive	Planned	Withdrawal unavailability	2021-10-16T01:02:32+01:00	2021-10-12T05:00:00+01:00	2021-10-16T00:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Adsorber valve fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000609_002	Dismissed	Planned	Withdrawal unavailability	2021-10-15T15:08:26+01:00	2021-10-12T05:00:00+01:00	2021-10-16T00:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Adsorber valve fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000609_001	Dismissed	Planned	Withdrawal unavailability	2021-10-04T13:11:02+01:00	2021-10-12T05:00:00+01:00	2021-10-15T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Adsorber valve fault	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_000000000000000000586_003	Inactive	Unplanned	Withdrawal unavailability	2021-05-19T11:34:23+01:00	2021-05-17T17:01:00+01:00	2021-05-19T11:35:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000586_002	Dismissed	Unplanned	Withdrawal unavailability	2021-05-18T17:07:23+01:00	2021-05-17T17:01:00+01:00	2021-05-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000586_001	Dismissed	Unplanned	Withdrawal unavailability	2021-05-17T17:24:59+01:00	2021-05-17T17:01:00+01:00	2021-05-18T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000585_002	Inactive	Unplanned	Withdrawal unavailability	2021-05-17T05:40:28+01:00	2021-05-16T18:00:00+01:00	2021-05-17T06:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 Leak test.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000585_001	Dismissed	Unplanned	Withdrawal unavailability	2021-05-16T17:58:28+01:00	2021-05-16T18:00:00+01:00	2021-05-17T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 Leak test.	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_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_000000000000000000699_002	Inactive	Unplanned	Injection unavailability	2022-10-19T15:10:48+01:00	2022-10-19T11:10:00+01:00	2022-10-19T15:10:00+01:00	GWh/d	100.27	211.29	311.56	Failure	GC-2 booster pump failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000699_001	Dismissed	Unplanned	Injection unavailability	2022-10-19T12:05:19+01:00	2022-10-19T11:10:00+01:00	2022-10-19T18:00:00+01:00	GWh/d	100.27	211.29	311.56	Failure	GC-2 booster pump failure	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

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.