Last update at: 2024-09-17T13:30:00+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
< 2 3 4 5 6 >
Aldbrough	ALD_000000000000000000776_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:31:09+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000776_001	Dismissed	Unplanned	Injection unavailability	2023-07-05T23:27:00+01:00	2023-07-05T23:01:00+01:00	2023-07-06T03:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000775_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:30:20+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000775_001	Dismissed	Unplanned	Injection unavailability	2023-07-05T23:24:21+01:00	2023-07-05T23:01:00+01:00	2023-07-06T03:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000727_002	Inactive	Planned	Injection unavailability	2023-05-23T19:02:32+01:00	2023-05-21T18:00:00+01:00	2023-05-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000727_001	Dismissed	Planned	Injection unavailability	2023-01-16T11:23:40+00:00	2023-05-21T18:00:00+01:00	2023-05-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000472_003	Inactive	Planned	Injection unavailability	2023-05-21T19:02:32+01:00	2023-05-07T05:00:00+01:00	2023-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000472_002	Dismissed	Planned	Injection unavailability	2023-01-16T11:03:23+00:00	2023-05-07T05:00:00+01:00	2023-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000472_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:02:49+01:00	2023-05-07T05:00:00+01:00	2023-05-19T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000726_002	Inactive	Planned	Injection unavailability	2023-05-07T06:02:32+01:00	2023-05-06T05:00:00+01:00	2023-05-07T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000726_001	Dismissed	Planned	Injection unavailability	2023-01-16T11:17:27+00:00	2023-05-06T05:00:00+01:00	2023-05-07T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000749_001	Active	Planned	Injection unavailability	2023-04-27T08:11:12+01:00	2026-07-01T05:00:00+01:00	2026-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage	Annual Full Site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000747_001	Active	Planned	Injection unavailability	2023-04-27T08:07:00+01:00	2025-07-01T05:00:00+01:00	2025-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage	Annual Full Site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000744_002	Inactive	Planned	Injection unavailability	2023-04-26T15:02:32+01:00	2023-04-26T10:00:00+01:00	2023-04-26T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000744_001	Dismissed	Planned	Injection unavailability	2023-04-24T15:07:12+01:00	2023-04-26T10:00:00+01:00	2023-04-26T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_007	Inactive	Planned	Injection unavailability	2023-03-31T11:56:18+01:00	2023-03-30T08:00:00+01:00	2023-03-31T11:55:00+01:00	GWh/d	30	0	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_006	Dismissed	Planned	Injection unavailability	2023-03-30T18:03:45+01:00	2023-03-30T08:00:00+01:00	2023-03-31T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_005	Dismissed	Planned	Injection unavailability	2023-03-30T17:00:06+01:00	2023-03-30T08:00:00+01:00	2023-03-30T19:00:00+01:00	GWh/d	22.5	7.5	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_004	Dismissed	Planned	Injection unavailability	2023-03-30T14:58:51+01:00	2023-03-30T08:00:00+01:00	2023-03-30T17:00:00+01:00	GWh/d	22.5	7.5	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_003	Dismissed	Planned	Injection unavailability	2023-03-30T13:00:53+01:00	2023-03-30T08:00:00+01:00	2023-03-30T16:00:00+01:00	GWh/d	22.5	7.5	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_002	Dismissed	Planned	Injection unavailability	2023-03-24T15:02:36+00:00	2023-03-30T08:00:00+01:00	2023-03-30T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_001	Dismissed	Planned	Injection unavailability	2023-03-22T10:27:02+00:00	2023-03-29T08:00:00+01:00	2023-03-29T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_007	Inactive	Unplanned	Injection unavailability	2023-02-23T14:17:52+00:00	2023-02-10T09:49:00+00:00	2023-02-23T14:16:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_006	Dismissed	Unplanned	Injection unavailability	2023-02-17T14:22:11+00:00	2023-02-10T09:49:00+00:00	2023-02-23T17:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_005	Dismissed	Unplanned	Injection unavailability	2023-02-14T17:42:26+00:00	2023-02-10T09:49:00+00:00	2023-02-20T17:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_004	Dismissed	Unplanned	Injection unavailability	2023-02-13T12:47:36+00:00	2023-02-10T09:49:00+00:00	2023-02-15T17:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_003	Dismissed	Unplanned	Injection unavailability	2023-02-10T15:26:40+00:00	2023-02-10T09:49:00+00:00	2023-02-13T17:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_002	Dismissed	Unplanned	Injection unavailability	2023-02-10T14:31:55+00:00	2023-02-10T09:49:00+00:00	2023-02-11T17:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_001	Dismissed	Unplanned	Injection unavailability	2023-02-10T10:01:41+00:00	2023-02-10T09:49:00+00:00	2023-02-10T16:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000725_002	Inactive	Unplanned	Injection unavailability	2023-01-12T14:46:40+00:00	2023-01-12T09:30:00+00:00	2023-01-12T14:45:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000725_001	Dismissed	Unplanned	Injection unavailability	2023-01-12T10:22:58+00:00	2023-01-12T09:30:00+00:00	2023-01-12T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000715_001	Inactive	Unplanned	Injection unavailability	2022-12-22T15:50:55+00:00	2022-12-08T14:07:00+00:00	2022-12-08T16:15:00+00:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000707_003	Inactive	Unplanned	Injection unavailability	2022-11-27T09:55:45+00:00	2022-11-26T23:18:00+00:00	2022-11-27T09:50:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000707_002	Dismissed	Unplanned	Injection unavailability	2022-11-26T23:18:58+00:00	2022-11-26T23:18:00+00:00	2022-11-27T19:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000707_001	Dismissed	Unplanned	Injection unavailability	2022-11-26T23:18:15+00:00	2022-11-26T23:18:00+00:00	2022-11-27T19:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000704_002	Inactive	Planned	Injection unavailability	2022-11-19T09:18:39+00:00	2022-11-19T07:30:00+00:00	2022-11-19T09:15:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000704_001	Dismissed	Planned	Injection unavailability	2022-11-18T18:59:11+00:00	2022-11-19T07:30:00+00:00	2022-11-19T11:30:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_007	Inactive	Planned	Injection unavailability	2022-11-19T08:32:32+00:00	2022-11-02T05:00:00+00:00	2022-11-19T07:30:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_006	Dismissed	Planned	Injection unavailability	2022-11-18T18:57:30+00:00	2022-11-02T05:00:00+00:00	2022-11-19T07:30:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_005	Dismissed	Planned	Injection unavailability	2022-11-18T13:52:57+00:00	2022-11-02T05:00:00+00:00	2022-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_004	Dismissed	Planned	Injection unavailability	2022-11-17T17:04:07+00:00	2022-11-02T05:00:00+00:00	2022-11-18T14:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_003	Dismissed	Planned	Injection unavailability	2022-11-15T16:35:47+00:00	2022-11-02T05:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:22:18+00:00	2022-11-02T05:00:00+00:00	2022-11-15T18:00:00+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_000000000000000000471_001	Dismissed	Planned	Injection unavailability	2020-07-11T15:59:40+01:00	2022-10-30T05:00:00+00:00	2022-11-09T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000702_002	Dismissed	Planned	Injection unavailability	2022-11-18T13:52:34+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000702_001	Dismissed	Planned	Injection unavailability	2022-11-17T16:59:09+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_003	Inactive	Planned	Injection unavailability	2022-11-01T16:58:43+00:00	2022-11-01T05:00:00+00:00	2022-11-01T17:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:20:54+00:00	2022-11-01T05:00:00+00:00	2022-11-02T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_001	Dismissed	Planned	Injection unavailability	2021-10-08T10:42:16+01:00	2022-10-29T05:00:00+01:00	2022-10-30T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000470_004	Inactive	Planned	Injection unavailability	2022-11-01T09:56:22+00:00	2022-10-24T05:00:00+01:00	2022-11-01T09:54:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	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.