Last update at: 2023-09-20T16:00:00+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
< 2 3 4 5 6 >
Aldbrough	ALD_000000000000000000623_002	Inactive	Planned	Injection unavailability	2021-12-14T17:01:53+00:00	2021-12-14T08:00:00+00:00	2021-12-14T16:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000623_001	Dismissed	Planned	Injection unavailability	2021-12-08T14:06:34+00:00	2021-12-14T08:00:00+00:00	2021-12-14T16:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000619_002	Inactive	Unplanned	Injection unavailability	2021-11-25T23:30:13+00:00	2021-11-25T20:30:00+00:00	2021-11-25T23:22:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000619_001	Dismissed	Unplanned	Injection unavailability	2021-11-25T21:07:53+00:00	2021-11-25T20:30:00+00:00	2021-11-26T02:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_011	Inactive	Planned	Injection unavailability	2021-11-18T12:24:25+00:00	2021-10-16T05:00:00+01:00	2021-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_010	Dismissed	Planned	Injection unavailability	2021-11-16T20:46:36+00:00	2021-10-16T05:00:00+01:00	2021-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_009	Dismissed	Planned	Injection unavailability	2021-11-11T12:55:15+00:00	2021-10-16T05:00:00+01:00	2021-11-17T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_008	Dismissed	Planned	Injection unavailability	2021-11-10T10:43:42+00:00	2021-10-16T05:00:00+01:00	2021-11-15T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_007	Dismissed	Planned	Injection unavailability	2021-11-06T07:29:25+00:00	2021-10-16T05:00:00+01:00	2021-11-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_006	Dismissed	Planned	Injection unavailability	2021-11-05T09:36:01+00:00	2021-10-16T05:00:00+01:00	2021-11-06T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_005	Dismissed	Planned	Injection unavailability	2021-10-28T10:54:58+01:00	2021-10-16T05:00:00+01:00	2021-11-05T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_004	Dismissed	Planned	Injection unavailability	2021-10-21T13:45:47+01:00	2021-10-16T05:00:00+01:00	2021-10-31T18:00:00+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_000000000000000000462_003	Dismissed	Planned	Injection unavailability	2021-07-02T15:14:22+01:00	2021-10-16T05:00:00+01:00	2021-10-24T18:00:00+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_000000000000000000462_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:04:39+00:00	2021-10-16T05:00:00+01:00	2021-10-22T05:00:00+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_000000000000000000462_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:00:20+01:00	2021-10-18T05:00:00+01:00	2021-10-23T05:00:00+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_000000000000000000614_002	Inactive	Unplanned	Injection unavailability	2021-11-15T15:48:01+00:00	2021-11-12T22:51:00+00:00	2021-11-15T15:35:00+00:00	GWh/d	111.02	200.54	311.56	Failure	VSDS failure after outage completed	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000614_001	Dismissed	Unplanned	Injection unavailability	2021-11-12T22:52:38+00:00	2021-11-12T22:51:00+00:00	2021-11-15T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	VSDS failure after outage completed	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_004	Inactive	Planned	Injection unavailability	2021-11-12T22:10:06+00:00	2021-10-31T05:00:00+00:00	2021-11-12T22:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage + Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_003	Dismissed	Planned	Injection unavailability	2021-09-07T10:59:59+01:00	2021-10-31T05:00:00+00:00	2021-11-14T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage + Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:06:54+00:00	2021-11-01T05:00:00+00:00	2021-11-13T05:00:00+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_000000000000000000463_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:04:49+01:00	2021-10-31T05:00:00+00:00	2021-11-10T05:00:00+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_000000000000000000529_002	Inactive	Planned	Injection unavailability	2021-10-30T19:02:31+01:00	2021-10-30T05:00:00+01:00	2021-10-30T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas Compressor 1 Siemens maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000529_001	Dismissed	Planned	Injection unavailability	2020-11-27T13:51:59+00:00	2021-10-30T05:00:00+01:00	2021-10-30T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas Compressor 1 Siemens maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_006	Inactive	Planned	Injection unavailability	2021-10-30T17:57:17+01:00	2021-10-25T05:00:00+01:00	2021-10-30T18:00:00+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_000000000000000000464_005	Dismissed	Planned	Injection unavailability	2021-10-30T08:19:44+01:00	2021-10-25T05:00:00+01:00	2021-10-31T10:00:00+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_000000000000000000464_004	Dismissed	Planned	Injection unavailability	2021-10-29T17:05:18+01:00	2021-10-25T05:00:00+01:00	2021-10-30T09:00:00+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_000000000000000000464_003	Dismissed	Planned	Injection unavailability	2021-09-07T10:55:34+01:00	2021-10-25T05:00:00+01:00	2021-10-29T18:00:00+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_000000000000000000464_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:05:43+00:00	2021-10-25T05:00:00+01:00	2021-10-31T05:00:00+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_000000000000000000464_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:10:06+01:00	2021-10-25T05:00:00+01:00	2021-10-30T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000598_002	Inactive	Planned	Injection unavailability	2021-10-22T16:16:59+01:00	2021-10-22T09:00:00+01:00	2021-10-22T16:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000598_001	Dismissed	Planned	Injection unavailability	2021-07-26T15:39:45+01:00	2021-10-22T09:00:00+01:00	2021-10-22T17:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000596_002	Inactive	Planned	Injection unavailability	2021-10-21T16:33:44+01:00	2021-10-21T09:00:00+01:00	2021-10-21T16:30:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000596_001	Dismissed	Planned	Injection unavailability	2021-07-26T15:37:01+01:00	2021-10-21T09:00:00+01:00	2021-10-21T17:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000607_003	Inactive	Unplanned	Injection unavailability	2021-09-11T22:01:50+01:00	2021-09-11T17:03:00+01:00	2021-09-11T22:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000607_002	Dismissed	Unplanned	Injection unavailability	2021-09-11T20:47:02+01:00	2021-09-11T17:03:00+01:00	2021-09-11T22:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000607_001	Dismissed	Unplanned	Injection unavailability	2021-09-11T17:06:21+01:00	2021-09-11T17:03:00+01:00	2021-09-11T21:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000604_002	Inactive	Unplanned	Injection unavailability	2021-08-10T16:55:05+01:00	2021-08-09T18:08:00+01:00	2021-08-10T16:55:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000604_001	Dismissed	Unplanned	Injection unavailability	2021-08-09T18:11:35+01:00	2021-08-09T18:08:00+01:00	2021-08-11T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000602_003	Inactive	Unplanned	Injection unavailability	2021-08-09T18:08:25+01:00	2021-08-09T10:31:00+01:00	2021-08-09T18:08:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000602_002	Dismissed	Unplanned	Injection unavailability	2021-08-09T15:56:50+01:00	2021-08-09T10:31:00+01:00	2021-08-09T20:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000602_001	Dismissed	Unplanned	Injection unavailability	2021-08-09T10:42:12+01:00	2021-08-09T10:31:00+01:00	2021-08-09T16:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000600_002	Inactive	Unplanned	Injection unavailability	2021-08-05T16:16:42+01:00	2021-08-04T12:00:00+01:00	2021-08-05T15:55:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000600_001	Dismissed	Unplanned	Injection unavailability	2021-08-04T12:43:48+01:00	2021-08-04T12:00:00+01:00	2021-08-05T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_005	Inactive	Planned	Injection unavailability	2021-07-18T17:40:26+01:00	2021-07-02T05:00:00+01:00	2021-07-18T17:40:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_004	Dismissed	Planned	Injection unavailability	2021-04-01T23:06:09+01:00	2021-07-02T05:00:00+01:00	2021-07-18T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_003	Dismissed	Planned	Injection unavailability	2021-03-12T11:18:08+00:00	2021-07-02T05:00:00+01:00	2021-07-18T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_002	Dismissed	Planned	Injection unavailability	2020-07-11T21:48:35+01:00	2021-07-01T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_001	Dismissed	Planned	Injection unavailability	2020-07-11T21:30:42+01:00	2021-07-01T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	0	30	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000593_002	Inactive	Unplanned	Injection unavailability	2021-07-11T10:18:33+01:00	2021-07-11T05:13:00+01:00	2021-07-11T10:20:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000593_001	Dismissed	Unplanned	Injection unavailability	2021-07-11T05:40:28+01:00	2021-07-11T05:13:00+01:00	2021-07-11T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		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.