Last update at: 2024-07-26T15:00:00+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 >
Atwick	ATW_000000000000000000826_003	Inactive	Planned	Withdrawal unavailability	2024-07-23T11:53:23+01:00	2024-06-28T05:00:00+01:00	2024-07-23T11:52:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_002	Dismissed	Planned	Withdrawal unavailability	2024-07-22T16:01:12+01:00	2024-06-28T05:00:00+01:00	2024-07-23T12:00:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_001	Dismissed	Planned	Withdrawal unavailability	2023-10-20T20:13:14+01:00	2024-06-28T05:00:00+01:00	2024-07-23T05:00:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000825_003	Inactive	Planned	Injection unavailability	2024-07-23T11:25:03+01:00	2024-06-28T05:00:00+01:00	2024-07-23T11:24:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000825_002	Dismissed	Planned	Injection unavailability	2024-07-22T15:58:49+01:00	2024-06-28T05:00:00+01:00	2024-07-23T12:00:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000825_001	Dismissed	Planned	Injection unavailability	2023-10-20T20:09:26+01:00	2024-06-28T05:00:00+01:00	2024-07-23T05:00:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000947_002	Inactive	Unplanned	Withdrawal unavailability	2024-07-17T09:26:44+01:00	2024-07-16T23:54:00+01:00	2024-07-17T09:27:00+01:00	GWh/d	342.3	0	342.3	Failure	Production Train 1 & 2 Sequence Issues	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000947_001	Dismissed	Unplanned	Withdrawal unavailability	2024-07-16T23:56:12+01:00	2024-07-16T23:54:00+01:00	2024-07-17T10:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Production Train 1 & 2 Sequence Issues	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000946_002	Inactive	Planned	Withdrawal unavailability	2024-07-16T13:29:48+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000946_001	Dismissed	Planned	Withdrawal unavailability	2024-07-16T11:06:10+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000945_002	Inactive	Planned	Injection unavailability	2024-07-16T13:29:25+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000945_001	Dismissed	Planned	Injection unavailability	2024-07-16T11:04:29+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000936_002	Inactive	Planned	Withdrawal unavailability	2024-06-27T14:46:09+01:00	2024-06-27T08:00:00+01:00	2024-06-27T13:50:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000936_001	Dismissed	Planned	Withdrawal unavailability	2024-06-18T13:07:59+01:00	2024-06-27T08:00:00+01:00	2024-06-27T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000935_002	Inactive	Planned	Injection unavailability	2024-06-27T14:45:38+01:00	2024-06-27T08:00:00+01:00	2024-06-27T13:50:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000935_001	Dismissed	Planned	Injection unavailability	2024-06-18T13:06:51+01:00	2024-06-27T08:00:00+01:00	2024-06-27T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000934_002	Inactive	Planned	Withdrawal unavailability	2024-06-26T16:05:53+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000934_001	Dismissed	Planned	Withdrawal unavailability	2024-06-18T13:05:17+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000933_002	Inactive	Planned	Injection unavailability	2024-06-26T16:05:36+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000933_001	Dismissed	Planned	Injection unavailability	2024-06-18T13:04:04+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000909_004	Inactive	Planned	Injection unavailability	2024-06-11T16:28:11+01:00	2024-06-11T12:00:00+01:00	2024-06-11T16:15:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000909_003	Dismissed	Planned	Injection unavailability	2024-06-11T16:13:50+01:00	2024-06-11T12:00:00+01:00	2024-06-11T16:15:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000909_002	Dismissed	Planned	Injection unavailability	2024-05-13T13:54:49+01:00	2024-06-11T12:00:00+01:00	2024-06-11T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000909_001	Dismissed	Planned	Injection unavailability	2024-04-17T14:43:14+01:00	2024-06-05T10:00:00+01:00	2024-06-05T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000910_003	Inactive	Planned	Withdrawal unavailability	2024-06-11T16:18:24+01:00	2024-06-11T12:00:00+01:00	2024-06-11T16:15:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000910_002	Dismissed	Planned	Withdrawal unavailability	2024-05-13T13:54:01+01:00	2024-06-11T12:00:00+01:00	2024-06-11T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000910_001	Dismissed	Planned	Withdrawal unavailability	2024-04-17T14:45:15+01:00	2024-06-05T10:00:00+01:00	2024-06-05T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000925_002	Inactive	Planned	Injection unavailability	2024-05-24T10:57:58+01:00	2024-05-12T05:00:00+01:00	2024-05-24T10:57:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	ALD_00000479_010 - Updated in error showing total availability For Outage. This Remit has been published to reflect total Injection unavailability.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000925_001	Dismissed	Planned	Injection unavailability	2024-05-24T10:57:01+01:00	2024-05-12T05:00:00+01:00	2024-05-24T10:57:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	ALD_00000479_010 - Updated in error showing total availability For Outage. This Remit has been published to reflect total Injection unavailability.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_008	Dismissed	Planned	Injection unavailability	2024-05-22T08:57:54+01:00	2024-05-12T05:00:00+01:00	2024-05-29T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full injection outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_007	Dismissed	Planned	Injection unavailability	2024-02-26T13:07:00+00:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_006	Dismissed	Planned	Injection unavailability	2024-02-26T12:31:03+00:00	2024-05-12T05:00:00+01:00	2024-05-23T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_005	Dismissed	Planned	Injection unavailability	2023-11-01T08:19:18+00:00	2024-05-12T05:00:00+01:00	2024-05-26T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_004	Dismissed	Planned	Injection unavailability	2023-07-25T08:42:49+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_003	Dismissed	Planned	Injection unavailability	2020-09-20T09:03:10+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_002	Dismissed	Planned	Injection unavailability	2020-09-20T08:57:21+01:00	2024-05-12T05:00:00+01:00	2024-05-21T09:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000479_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:25:45+01:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_008	Inactive	Planned	Withdrawal unavailability	2024-05-24T07:31:22+01:00	2024-05-12T05:00:00+01:00	2024-05-24T07:32:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_007	Dismissed	Planned	Withdrawal unavailability	2024-05-24T07:30:54+01:00	2024-05-12T05:00:00+01:00	2024-05-24T07:32:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_006	Dismissed	Planned	Withdrawal unavailability	2024-02-26T13:07:29+00:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_005	Dismissed	Planned	Withdrawal unavailability	2024-02-26T12:29:55+00:00	2024-05-12T05:00:00+01:00	2024-05-23T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_004	Dismissed	Planned	Withdrawal unavailability	2023-11-01T08:20:00+00:00	2024-05-12T05:00:00+01:00	2024-05-26T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_003	Dismissed	Planned	Withdrawal unavailability	2023-07-25T08:34:12+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_002	Dismissed	Planned	Withdrawal unavailability	2021-06-30T09:54:19+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:29:20+01:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_003	Dismissed	Unplanned	Withdrawal unavailability	2024-04-12T08:30:50+01:00	2024-04-11T00:30:00+01:00	2024-04-17T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_002	Dismissed	Unplanned	Withdrawal unavailability	2024-04-11T01:06:57+01:00	2024-04-11T00:30:00+01:00	2024-04-12T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_001	Dismissed	Unplanned	Withdrawal unavailability	2024-04-11T00:28:30+01:00	2024-04-11T00:30:00+01:00	2024-04-12T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 1 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000903_002	Inactive	Planned	Withdrawal unavailability	2024-04-03T15:02:32+01:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000902_002	Inactive	Planned	Injection unavailability	2024-04-03T15:02:32+01:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Software download.	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.