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
< 4 5 6 7 8 >
Aldbrough	ALD_000000000000000000661_001	Dismissed	Unplanned	Storage unavailability	2022-03-22T14:11:42+00:00	2022-03-22T14:15:00+00:00	2022-06-22T14:15:00+01:00	TWh	0.06761	2.3882077	2.4558177	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000765_002	Inactive	Unplanned	Storage unavailability	2023-06-08T16:55:19+01:00	2023-06-07T16:00:00+01:00	2023-06-08T16:40:00+01:00	TWh	0.555695	2.9129497	3.4686447	Failure	Cavity 7 wellhead panel	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000765_001	Dismissed	Unplanned	Storage unavailability	2023-06-07T16:09:37+01:00	2023-06-07T16:00:00+01:00	2023-06-09T18:00:00+01:00	TWh	0.555695	2.9129497	3.4686447	Failure	Cavity 7 wellhead panel	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000764_002	Inactive	Unplanned	Withdrawal unavailability	2023-06-07T15:19:59+01:00	2023-06-07T11:50:00+01:00	2023-06-07T15:00:00+01:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000764_001	Dismissed	Unplanned	Withdrawal unavailability	2023-06-07T11:52:59+01:00	2023-06-07T11:50:00+01:00	2023-06-07T16:00:00+01:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000762_002	Inactive	Unplanned	Storage unavailability	2023-06-06T15:36:51+01:00	2023-06-05T16:00:00+01:00	2023-06-06T15:25:00+01:00	TWh	0.3908	2.8395647	3.4686447	Failure	Atwick 3 WHP N2 Leak	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000762_001	Dismissed	Unplanned	Storage unavailability	2023-06-05T16:22:12+01:00	2023-06-05T16:00:00+01:00	2023-06-06T18:00:00+01:00	TWh	0.3908	2.8395647	3.4686447	Failure	Atwick 3 WHP N2 Leak	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000755_003	Inactive	Unplanned	Storage unavailability	2023-05-30T15:37:39+01:00	2023-05-27T13:36:00+01:00	2023-05-30T15:35:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000755_002	Dismissed	Unplanned	Storage unavailability	2023-05-28T07:47:44+01:00	2023-05-27T13:36:00+01:00	2023-05-30T18:00:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000755_001	Dismissed	Unplanned	Storage unavailability	2023-05-27T13:36:42+01:00	2023-05-27T13:36:00+01:00	2023-05-29T18:00:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000753_002	Inactive	Unplanned	Storage unavailability	2023-05-26T18:16:40+01:00	2023-05-21T18:00:00+01:00	2023-05-26T18:00:00+01:00	TWh	0.934	2.3677895	3.3017895	Failure	Wells 1 & 9 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000753_001	Dismissed	Unplanned	Storage unavailability	2023-05-17T15:30:14+01:00	2023-05-21T18:00:00+01:00	2023-05-26T18:00:00+01:00	TWh	0.934	2.3677895	3.3017895	Failure	Wells 1 & 9 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000754_002	Inactive	Unplanned	Storage unavailability	2023-05-25T14:47:07+01:00	2023-05-24T22:35:00+01:00	2023-05-25T14:45:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000754_001	Dismissed	Unplanned	Storage unavailability	2023-05-24T22:38:19+01:00	2023-05-24T22:35:00+01:00	2023-05-25T15:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000740_002	Inactive	Unplanned	Withdrawal unavailability	2023-04-09T23:04:07+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000740_001	Dismissed	Unplanned	Withdrawal unavailability	2023-04-09T21:00:30+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:59:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000739_002	Dismissed	Unplanned	Withdrawal unavailability	2023-04-09T21:02:21+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:59:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000739_001	Dismissed	Unplanned	Withdrawal unavailability	2023-04-09T20:59:54+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:59:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000738_002	Dismissed	Unplanned	Withdrawal unavailability	2023-04-09T21:01:23+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:59:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000738_001	Dismissed	Unplanned	Withdrawal unavailability	2023-04-09T20:59:41+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:59:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	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
Atwick	ATW_000000000000000000731_007	Inactive	Unplanned	Withdrawal unavailability	2023-02-23T14:17:05+00:00	2023-02-10T09:49:00+00:00	2023-02-23T14:16:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_006	Dismissed	Unplanned	Withdrawal unavailability	2023-02-17T14:21:42+00:00	2023-02-10T09:49:00+00:00	2023-02-23T17:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_005	Dismissed	Unplanned	Withdrawal unavailability	2023-02-14T17:41:16+00:00	2023-02-10T09:49:00+00:00	2023-02-20T17:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_004	Dismissed	Unplanned	Withdrawal unavailability	2023-02-13T12:50:37+00:00	2023-02-10T09:49:00+00:00	2023-02-15T17:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_003	Dismissed	Unplanned	Withdrawal unavailability	2023-02-10T15:25:39+00:00	2023-02-10T09:49:00+00:00	2023-02-13T17:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_002	Dismissed	Unplanned	Withdrawal unavailability	2023-02-10T14:32:45+00:00	2023-02-10T09:49:00+00:00	2023-02-11T17:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_001	Dismissed	Unplanned	Withdrawal unavailability	2023-02-10T09:50:42+00:00	2023-02-10T09:49:00+00:00	2023-02-10T16:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000728_002	Inactive	Unplanned	Withdrawal unavailability	2023-01-18T16:01:03+00:00	2023-01-18T11:10:00+00:00	2023-01-18T16:00:00+00:00	GWh/d	39	91	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000728_001	Dismissed	Unplanned	Withdrawal unavailability	2023-01-18T11:09:35+00:00	2023-01-18T11:10:00+00:00	2023-01-18T16:00:00+00:00	GWh/d	39	91	130	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
Atwick	ATW_000000000000000000710_008	Inactive	Unplanned	Withdrawal unavailability	2022-12-23T13:18:45+00:00	2022-12-19T09:32:00+00:00	2022-12-23T13:18:00+00:00	GWh/d	100	30	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_007	Dismissed	Unplanned	Withdrawal unavailability	2022-12-19T09:49:39+00:00	2022-12-19T09:32:00+00:00	2022-12-23T17:00:00+00:00	GWh/d	100	30	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_006	Dismissed	Unplanned	Withdrawal unavailability	2022-12-19T09:33:16+00:00	2022-12-19T09:32:00+00:00	2022-12-22T17:00:00+00:00	GWh/d	100	30	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_005	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T14:06:43+00:00	2022-12-14T09:07:00+00:00	2022-12-27T05:00:00+00:00	GWh/d	50	80	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_004	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T07:18:17+00:00	2022-12-14T09:07:00+00:00	2022-12-25T16:00:00+00:00	GWh/d	50	80	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_003	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T07:11:57+00:00	2022-12-14T09:07:00+00:00	2022-12-16T16:00:00+00:00	GWh/d	80	50	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_002	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T07:08:35+00:00	2022-12-14T09:07:00+00:00	2022-12-25T16:00:00+00:00	GWh/d	80	50	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000710_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-14T09:11:14+00:00	2022-12-14T09:07:00+00:00	2022-12-25T16:00:00+00:00	GWh/d	50	80	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000717_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-23T12:14:34+00:00	2022-12-22T20:10:00+00:00	2022-12-23T12:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	Prod Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000717_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-22T20:14:18+00:00	2022-12-22T20:10:00+00:00	2022-12-23T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	Prod Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000716_001	Inactive	Unplanned	Withdrawal unavailability	2022-12-22T15:53:17+00:00	2022-12-08T14:07:00+00:00	2022-12-08T16:15:00+00:00	GWh/d	342.3	0	342.3	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

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.