Last update at: 2024-09-20T13:00:00+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
< 6 7 8 9 10 >
Atwick	ATW_000000000000000000780_008	Inactive	Planned	Withdrawal unavailability	2023-11-06T17:44:04+00:00	2023-07-17T05:00:00+01:00	2023-11-06T17:30:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_007	Dismissed	Planned	Withdrawal unavailability	2023-10-31T16:06:31+00:00	2023-07-17T05:00:00+01:00	2023-11-06T18:00:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_006	Dismissed	Planned	Withdrawal unavailability	2023-09-15T09:17:54+01:00	2023-07-17T05:00:00+01:00	2023-10-31T18:00:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_005	Dismissed	Planned	Withdrawal unavailability	2023-08-23T17:47:48+01:00	2023-07-17T05:00:00+01:00	2023-09-30T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_004	Dismissed	Planned	Withdrawal unavailability	2023-08-15T07:17:26+01:00	2023-07-17T05:00:00+01:00	2023-08-31T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000788_003	Inactive	Planned	Withdrawal unavailability	2023-08-15T07:21:49+01:00	2023-07-21T15:16:00+01:00	2023-08-15T07:21:00+01:00	GWh/d	30	70	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000788_002	Dismissed	Planned	Withdrawal unavailability	2023-07-21T15:36:15+01:00	2023-07-21T15:16:00+01:00	2024-06-01T05:00:00+01:00	GWh/d	30	70	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000788_001	Dismissed	Planned	Withdrawal unavailability	2023-07-21T15:24:47+01:00	2023-07-21T15:16:00+01:00	2024-06-01T05:00:00+01:00	GWh/d	30	70	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_003	Dismissed	Planned	Withdrawal unavailability	2022-06-27T09:31:40+01:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_002	Dismissed	Planned	Withdrawal unavailability	2022-03-18T09:15:10+00:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_001	Dismissed	Planned	Withdrawal unavailability	2022-03-18T08:27:47+00:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000645_001	Dismissed	Unplanned	Withdrawal unavailability	2022-02-03T13:30:02+00:00	2022-02-03T13:28:00+00:00	2022-02-06T18:00:00+00:00	GWh/d	67	63	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000939_001	Dismissed	Unplanned	Withdrawal unavailability	2024-06-19T18:07:14+01:00	2024-06-19T18:01:00+01:00	2024-06-20T18:00:00+01:00	GWh/d	70	60	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000937_004	Inactive	Unplanned	Withdrawal unavailability	2024-06-19T12:11:39+01:00	2024-06-18T17:25:00+01:00	2024-06-19T12:10:00+01:00	GWh/d	70	60	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000937_003	Dismissed	Unplanned	Withdrawal unavailability	2024-06-19T07:21:49+01:00	2024-06-18T17:25:00+01:00	2024-06-19T18:00:00+01:00	GWh/d	70	60	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000937_002	Dismissed	Unplanned	Withdrawal unavailability	2024-06-18T19:17:26+01:00	2024-06-18T17:25:00+01:00	2024-06-19T18:00:00+01:00	GWh/d	30	60	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000919_002	Dismissed	Planned	Withdrawal unavailability	2024-06-17T11:25:42+01:00	2024-06-18T08:00:00+01:00	2024-06-18T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000919_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:09:43+01:00	2024-06-18T08:00:00+01:00	2024-06-18T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000918_002	Inactive	Unplanned	Withdrawal unavailability	2024-06-17T11:24:37+01:00	2024-06-17T08:00:00+01:00	2024-06-17T11:20:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000918_001	Dismissed	Unplanned	Withdrawal unavailability	2024-04-25T14:08:36+01:00	2024-06-17T08:00:00+01:00	2024-06-17T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000917_002	Inactive	Planned	Withdrawal unavailability	2024-06-14T15:33:22+01:00	2024-06-14T08:00:00+01:00	2024-06-14T15:33:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000917_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:06:26+01:00	2024-06-14T08:00:00+01:00	2024-06-14T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000916_002	Inactive	Planned	Withdrawal unavailability	2024-06-13T16:04:06+01:00	2024-06-13T08:00:00+01:00	2024-06-13T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000916_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:03:30+01:00	2024-06-13T08:00:00+01:00	2024-06-13T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000915_002	Inactive	Planned	Withdrawal unavailability	2024-06-12T17:02:32+01:00	2024-06-12T08:00:00+01:00	2024-06-12T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000915_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:02:10+01:00	2024-06-12T08:00:00+01:00	2024-06-12T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000920_003	Inactive	Planned	Withdrawal unavailability	2024-05-08T14:56:58+01:00	2024-05-08T08:00:00+01:00	2024-05-08T14:56:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000920_002	Dismissed	Planned	Withdrawal unavailability	2024-04-25T18:27:39+01:00	2024-05-08T08:00:00+01:00	2024-05-08T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000920_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:24:39+01:00	2024-05-08T08:00:00+01:00	2024-05-08T16:00:00+01:00	GWh/d	30	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000829_002	Active	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_000000000000000000901_002	Dismissed	Unplanned	Withdrawal unavailability	2024-03-28T12:19:25+00:00	2024-03-28T12:10:00+00:00	2024-03-31T18:00:00+01:00	GWh/d	70	60	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000901_001	Dismissed	Unplanned	Withdrawal unavailability	2024-03-28T12:10:18+00:00	2024-03-28T12:10:00+00:00	2024-03-31T18:00:00+01:00	GWh/d	70	60	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000939_003	Inactive	Unplanned	Withdrawal unavailability	2024-06-20T19:02:32+01:00	2024-06-19T18:01:00+01:00	2024-06-20T18:00:00+01:00	GWh/d	80	50	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000939_002	Dismissed	Unplanned	Withdrawal unavailability	2024-06-19T18:34:57+01:00	2024-06-19T18:01:00+01:00	2024-06-20T18:00:00+01:00	GWh/d	80	50	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000880_002	Inactive	Unplanned	Withdrawal unavailability	2024-01-15T17:01:40+00:00	2024-01-15T14:51:00+00:00	2024-01-15T17:01:00+00:00	GWh/d	80	50	130	Failure	STR7 & Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000880_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-15T14:52:27+00:00	2024-01-15T14:51:00+00:00	2024-01-15T18:00:00+00:00	GWh/d	80	50	130	Failure	STR7 & Vortisep	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_000000000000000000713_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-16T12:38:56+00:00	2022-12-16T07:15:00+00:00	2022-12-16T12:38:00+00:00	GWh/d	80	50	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000713_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-16T07:19:43+00:00	2022-12-16T07:15:00+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_000000000000000000638_003	Inactive	Planned	Withdrawal unavailability	2022-01-18T17:35:09+00:00	2022-01-18T08:00:00+00:00	2022-01-18T17:30:00+00:00	GWh/d	32.4	48.8	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000638_002	Dismissed	Planned	Withdrawal unavailability	2022-01-18T08:57:27+00:00	2022-01-18T08:00:00+00:00	2022-01-18T18:00:00+00:00	GWh/d	32.4	48.8	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_006	Dismissed	Unplanned	Withdrawal unavailability	2023-11-01T13:22:38+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_005	Dismissed	Unplanned	Withdrawal unavailability	2023-10-30T11:26:11+00:00	2023-10-23T21:38:00+01:00	2023-11-06T05:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_004	Dismissed	Unplanned	Withdrawal unavailability	2023-10-24T08:38:27+01:00	2023-10-23T21:38:00+01:00	2023-10-30T18:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_003	Dismissed	Unplanned	Withdrawal unavailability	2023-10-23T21:48:28+01:00	2023-10-23T21:38:00+01:00	2023-10-24T18:00:00+01:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_002	Dismissed	Unplanned	Withdrawal unavailability	2023-10-23T21:46:18+01:00	2023-10-23T21:38:00+01:00	2023-10-24T18:00:00+01:00	GWh/d	21.665	48.335	130	Failure	Stream 7	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

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.