Last update at: 2024-05-14T13:30:00+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
< 7 8 9 10 11 >
Atwick	ATW_000000000000000000879_001	Dismissed	Planned	Withdrawal unavailability	2024-01-12T20:41:45+00:00	2024-01-13T05:00:00+00:00	2024-01-15T18:00:00+00:00	GWh/d	50	80	130	Failure	stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000849_004	Inactive	Unplanned	Withdrawal unavailability	2024-01-12T19:22:22+00:00	2023-11-28T12:48:00+00:00	2024-01-12T19:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000849_003	Dismissed	Unplanned	Withdrawal unavailability	2023-12-04T17:10:34+00:00	2023-11-28T12:48:00+00:00	2024-01-15T18:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000849_002	Dismissed	Unplanned	Withdrawal unavailability	2023-11-28T12:52:13+00:00	2023-11-28T12:48:00+00:00	2023-12-19T18:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000849_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-23T09:42:48+00:00	2023-11-28T18:00:00+00:00	2023-12-19T18:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000838_003	Inactive	Unplanned	Withdrawal unavailability	2023-11-18T06:02:32+00:00	2023-11-09T07:20:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000838_002	Dismissed	Unplanned	Withdrawal unavailability	2023-11-13T08:15:17+00:00	2023-11-09T07:20:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000838_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T07:38:30+00:00	2023-11-09T07:20:00+00:00	2023-11-16T05:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_008	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T05:22:33+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:05:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_007	Dismissed	Unplanned	Withdrawal unavailability	2023-11-06T17:46:54+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000730_002	Inactive	Planned	Withdrawal unavailability	2023-02-08T13:02:32+00:00	2023-02-08T10:00:00+00:00	2023-02-08T12:00:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 7.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000730_001	Dismissed	Planned	Withdrawal unavailability	2023-02-02T09:11:40+00:00	2023-02-08T10:00:00+00:00	2023-02-08T12:00:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 7.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000729_002	Inactive	Planned	Withdrawal unavailability	2023-02-06T15:45:38+00:00	2023-02-06T08:00:00+00:00	2023-02-06T15:42:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 8	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000729_001	Dismissed	Planned	Withdrawal unavailability	2023-02-02T08:49:06+00:00	2023-02-06T08:00:00+00:00	2023-02-06T16:00:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 8	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_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
Atwick	ATW_000000000000000000711_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-14T09:14:10+00:00	2022-12-14T09:07:00+00:00	2022-12-25T16:00:00+00:00	GWh/d	50	80	130	Failure	double entry	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000711_001	Dismissed	Unplanned	Withdrawal unavailability	2022-12-14T09:11:21+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_000000000000000000650_004	Dismissed	Planned	Withdrawal unavailability	2022-07-26T12:00:05+01:00	2022-08-02T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_003	Dismissed	Planned	Withdrawal unavailability	2022-07-22T14:29:19+01:00	2022-08-02T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_002	Dismissed	Planned	Withdrawal unavailability	2022-07-07T10:48:53+01:00	2022-08-02T18:00:00+01:00	2022-09-06T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_001	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:38:22+00:00	2022-09-10T05:00:00+01:00	2022-09-29T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000649_003	Inactive	Planned	Withdrawal unavailability	2022-07-01T06:02:32+01:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000649_002	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:38:54+00:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_007	Inactive	Planned	Withdrawal unavailability	2022-05-26T08:57:06+01:00	2022-05-07T05:00:00+01:00	2022-05-26T09:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_006	Dismissed	Planned	Withdrawal unavailability	2022-05-25T22:54:53+01:00	2022-05-07T05:00:00+01:00	2022-05-26T12:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_005	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:39:08+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_002	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:18:20+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_001	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:14:59+00:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_004	Inactive	Planned	Withdrawal unavailability	2022-04-12T08:02:50+01:00	2022-03-18T09:27:00+00:00	2022-04-12T08:02:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_003	Dismissed	Planned	Withdrawal unavailability	2022-04-06T13:33:47+01:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_001	Dismissed	Planned	Withdrawal unavailability	2022-03-18T09:28:40+00:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_004	Inactive	Planned	Withdrawal unavailability	2021-06-16T08:58:18+01:00	2021-04-07T20:20:00+01:00	2021-06-16T08:57:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_003	Dismissed	Planned	Withdrawal unavailability	2021-04-18T18:54:40+01:00	2021-04-07T20:20:00+01:00	2021-07-07T18:00:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_002	Dismissed	Planned	Withdrawal unavailability	2022-03-26T21:43:20+00:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	55	75	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000898_002	Inactive	Unplanned	Withdrawal unavailability	2024-03-15T13:46:19+00:00	2024-03-13T16:42:00+00:00	2024-03-15T13:40:00+00:00	GWh/d	60	70	130	Failure	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000898_001	Dismissed	Unplanned	Withdrawal unavailability	2024-03-13T16:45:59+00:00	2024-03-13T16:42:00+00:00	2024-03-15T17:00:00+00:00	GWh/d	60	70	130	Failure	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
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_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_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_000000000000000000919_001	Active	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

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.