Last update at: 2024-10-11T11:30:00+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 >
Atwick	ATW_000000000000000000965_004	Inactive	Planned	Withdrawal unavailability	2024-10-11T11:16:30+01:00	2024-10-05T05:00:00+01:00	2024-10-11T11:15:00+01:00	GWh/d	100	30	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000965_003	Dismissed	Planned	Withdrawal unavailability	2024-10-04T14:36:37+01:00	2024-10-05T05:00:00+01:00	2024-10-11T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000965_002	Dismissed	Planned	Withdrawal unavailability	2024-10-03T14:46:29+01:00	2024-10-05T13:00:00+01:00	2024-10-11T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000965_001	Dismissed	Planned	Withdrawal unavailability	2024-10-01T08:01:54+01:00	2024-10-05T05:00:00+01:00	2024-10-11T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000973_001	Active	Planned	Withdrawal unavailability	2024-10-11T09:36:54+01:00	2025-07-16T18:00:00+01:00	2025-07-29T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000747_002	Active	Planned	Injection unavailability	2024-10-11T09:35:20+01:00	2025-06-26T05:00:00+01:00	2025-07-16T18:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000747_001	Dismissed	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
Atwick	ATW_000000000000000000746_002	Active	Planned	Withdrawal unavailability	2024-10-11T09:34:06+01:00	2025-06-26T05:00:00+01:00	2025-07-16T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000746_001	Dismissed	Planned	Withdrawal unavailability	2023-04-27T08:04:47+01:00	2025-07-01T05:00:00+01:00	2025-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage	Annual Full site Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000972_001	Active	Planned	Withdrawal unavailability	2024-10-11T09:32:32+01:00	2025-06-18T05:00:00+01:00	2025-06-26T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000971_001	Active	Planned	Withdrawal unavailability	2024-10-11T09:30:56+01:00	2025-05-31T05:00:00+01:00	2025-06-09T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000970_001	Active	Planned	Withdrawal unavailability	2024-10-09T10:12:00+01:00	2024-11-02T07:00:00+00:00	2024-11-02T19:00:00+00:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000969_001	Active	Planned	Injection unavailability	2024-10-09T10:11:21+01:00	2024-11-02T07:00:00+00:00	2024-11-02T19:00:00+00:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_006	Inactive	Unplanned	Withdrawal unavailability	2024-10-05T20:18:08+01:00	2024-09-07T15:29:00+01:00	2024-10-05T20:20:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_005	Dismissed	Unplanned	Withdrawal unavailability	2024-10-05T16:03:58+01:00	2024-09-07T15:29:00+01:00	2024-10-05T21:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_004	Dismissed	Unplanned	Withdrawal unavailability	2024-09-26T09:12:23+01:00	2024-09-07T15:29:00+01:00	2024-10-05T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_003	Dismissed	Unplanned	Withdrawal unavailability	2024-09-24T08:08:46+01:00	2024-09-07T15:29:00+01:00	2024-10-03T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_002	Dismissed	Unplanned	Withdrawal unavailability	2024-09-09T10:35:39+01:00	2024-09-07T15:29:00+01:00	2024-09-28T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000957_001	Dismissed	Unplanned	Withdrawal unavailability	2024-09-07T15:31:25+01:00	2024-09-07T15:29:00+01:00	2024-09-14T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Loss of Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000966_002	Dismissed	Planned	Withdrawal unavailability	2024-10-04T14:37:45+01:00	2024-10-05T05:00:00+01:00	2024-10-05T13:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000966_001	Dismissed	Planned	Withdrawal unavailability	2024-10-03T14:47:34+01:00	2024-10-05T05:00:00+01:00	2024-10-05T13:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000968_001	Active	Planned	Storage unavailability	2024-10-04T11:25:08+01:00	2025-08-01T05:00:00+01:00	2025-09-24T18:00:00+01:00	TWh	0.442	2.6385477	3.0805477	Planned Outage	A7 maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000967_001	Active	Planned	Storage unavailability	2024-10-04T11:16:21+01:00	2025-07-01T05:00:00+01:00	2025-07-14T18:00:00+01:00	TWh	0.333	2.7475477	3.0805477	Planned Outage	A5 maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000949_004	Active	Unplanned	Storage unavailability	2024-09-30T10:03:19+01:00	2024-08-02T15:44:00+01:00	2024-12-20T18:00:00+00:00	TWh	0.3908	3.0778447	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000949_003	Dismissed	Unplanned	Storage unavailability	2024-09-03T14:30:09+01:00	2024-08-02T15:44:00+01:00	2024-10-17T18:00:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000949_002	Dismissed	Unplanned	Storage unavailability	2024-08-05T09:25:20+01:00	2024-08-02T15:44:00+01:00	2024-10-01T05:00:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000949_001	Dismissed	Unplanned	Storage unavailability	2024-08-02T15:46:10+01:00	2024-08-02T15:44:00+01:00	2024-08-16T05:00:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000829_004	Inactive	Planned	Withdrawal unavailability	2024-09-30T08:49:05+01:00	2024-08-31T05:00:00+01:00	2024-09-30T08:49:00+01:00	GWh/d	70	60	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000829_003	Dismissed	Planned	Withdrawal unavailability	2024-09-29T16:56:40+01:00	2024-08-31T05:00:00+01:00	2024-09-30T09:00:00+01:00	GWh/d	70	60	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000829_002	Dismissed	Planned	Withdrawal unavailability	2024-04-10T07:20:11+01:00	2024-08-31T05:00:00+01:00	2024-09-29T18:00:00+01:00	GWh/d	70	60	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000829_001	Dismissed	Planned	Withdrawal unavailability	2023-10-21T11:00:57+01:00	2024-08-31T05:00:00+01:00	2024-09-29T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000964_002	Inactive	Planned	Withdrawal unavailability	2024-09-24T11:21:28+01:00	2024-09-24T05:00:00+01:00	2024-09-24T11:21:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000964_001	Dismissed	Planned	Withdrawal unavailability	2024-09-18T08:03:52+01:00	2024-09-24T05:00:00+01:00	2024-09-24T13:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000963_004	Inactive	Unplanned	Storage unavailability	2024-09-20T12:43:28+01:00	2024-09-17T09:30:00+01:00	2024-09-20T12:42:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000963_003	Dismissed	Unplanned	Storage unavailability	2024-09-19T14:21:41+01:00	2024-09-17T09:30:00+01:00	2024-09-20T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000963_002	Dismissed	Unplanned	Storage unavailability	2024-09-17T13:16:25+01:00	2024-09-17T09:30:00+01:00	2024-09-19T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000963_001	Dismissed	Unplanned	Storage unavailability	2024-09-17T09:35:57+01:00	2024-09-17T09:30:00+01:00	2024-09-18T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000962_002	Dismissed	Unplanned	Storage unavailability	2024-09-17T09:39:08+01:00	2024-09-17T09:30:00+01:00	2024-09-18T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000962_001	Dismissed	Unplanned	Storage unavailability	2024-09-17T09:32:18+01:00	2024-09-17T09:30:00+01:00	2024-09-18T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000961_002	Dismissed	Unplanned	Storage unavailability	2024-09-17T09:36:58+01:00	2024-09-17T09:30:00+01:00	2024-09-18T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000961_001	Dismissed	Unplanned	Storage unavailability	2024-09-17T09:31:41+01:00	2024-09-17T09:30:00+01:00	2024-09-18T18:00:00+01:00	TWh	0.62907996	2.83956474	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_007	Inactive	Unplanned	Withdrawal unavailability	2024-09-13T17:35:01+01:00	2024-09-09T17:29:00+01:00	2024-09-13T17:34:00+01:00	GWh/d	82	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_006	Dismissed	Unplanned	Withdrawal unavailability	2024-09-12T12:39:15+01:00	2024-09-09T17:29:00+01:00	2024-09-13T18:00:00+01:00	GWh/d	82	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_005	Dismissed	Unplanned	Withdrawal unavailability	2024-09-11T13:10:14+01:00	2024-09-09T17:29:00+01:00	2024-09-12T18:00:00+01:00	GWh/d	82	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_004	Dismissed	Unplanned	Withdrawal unavailability	2024-09-10T17:00:43+01:00	2024-09-09T17:29:00+01:00	2024-09-11T18:00:00+01:00	GWh/d	82	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_003	Dismissed	Unplanned	Withdrawal unavailability	2024-09-09T22:46:04+01:00	2024-09-09T17:29:00+01:00	2024-09-11T18:00:00+01:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_002	Dismissed	Unplanned	Withdrawal unavailability	2024-09-09T21:59:13+01:00	2024-09-09T17:29:00+01:00	2024-09-11T18:00:00+01:00	GWh/d	82	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000959_001	Dismissed	Unplanned	Withdrawal unavailability	2024-09-09T17:29:24+01:00	2024-09-09T17:29:00+01:00	2024-09-11T18:00:00+01:00	GWh/d	0	48	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000958_003	Inactive	Unplanned	Withdrawal unavailability	2024-09-12T20:02:16+01:00	2024-09-09T18:00:00+01:00	2024-09-13T18:00:00+01:00	GWh/d	220.8	0	342.3	Failure	Full withdrawal outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000958_002	Dismissed	Unplanned	Withdrawal unavailability	2024-09-09T11:00:45+01:00	2024-09-09T18:00:00+01:00	2024-09-13T18:00:00+01:00	GWh/d	220.8	0	342.3	Failure	Full withdrawal 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.