Last update at: 2024-10-13T11:00:00+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
< 2 3 4 5 6 >
Atwick	ATW_000000000000000000791_004	Dismissed	Planned	Withdrawal unavailability	2023-10-31T16:07:47+00:00	2023-11-06T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000791_003	Dismissed	Planned	Withdrawal unavailability	2023-09-20T09:12:42+01:00	2023-10-31T18:00:00+00:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000791_002	Dismissed	Planned	Withdrawal unavailability	2023-08-23T17:56:14+01:00	2023-09-30T18:00:00+01:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000791_001	Dismissed	Planned	Withdrawal unavailability	2023-08-15T07:20:58+01:00	2023-08-31T18:00:00+01:00	2024-06-01T05:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000881_003	Inactive	Unplanned	Withdrawal unavailability	2024-01-15T20:32:32+00:00	2024-01-15T17:02:00+00:00	2024-01-15T19:30:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000881_002	Dismissed	Unplanned	Withdrawal unavailability	2024-01-15T19:13:30+00:00	2024-01-15T17:02:00+00:00	2024-01-15T19:30:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000881_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-15T17:03:33+00:00	2024-01-15T17:02:00+00:00	2024-01-15T22:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	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_000000000000000000879_003	Inactive	Planned	Withdrawal unavailability	2024-01-15T14:50:42+00:00	2024-01-12T22:30:00+00:00	2024-01-15T14:51:00+00:00	GWh/d	50	80	130	Failure	stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000879_002	Dismissed	Planned	Withdrawal unavailability	2024-01-12T22:39:15+00:00	2024-01-12T22:30:00+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_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_000000000000000000878_003	Inactive	Unplanned	Withdrawal unavailability	2024-01-12T22:35:09+00:00	2024-01-12T19:00:00+00:00	2024-01-12T22:30:00+00:00	GWh/d	100	30	130	Failure	PH6 both streams out	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000878_002	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T20:23:49+00:00	2024-01-12T19:00:00+00:00	2024-01-13T05:00:00+00:00	GWh/d	100	30	130	Failure	PH6 both streams out	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000878_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T19:25:56+00:00	2024-01-12T19:00:00+00:00	2024-01-13T00:00:00+00:00	GWh/d	100	30	130	Failure	PH6 both streams out	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_000000000000000000871_002	Inactive	Unplanned	Storage unavailability	2024-01-05T11:37:51+00:00	2023-12-28T14:26:00+00:00	2024-01-05T11:35:00+00:00	TWh	0.421650307	3.046994393	3.4686447	Failure	Cavity 1	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000871_001	Dismissed	Unplanned	Storage unavailability	2023-12-28T14:35:27+00:00	2023-12-28T14:26:00+00:00	2024-01-15T18:00:00+00:00	TWh	0.421650307	3.046994393	3.4686447	Failure	Cavity 1	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000848_002	Inactive	Planned	Withdrawal unavailability	2023-11-28T12:49:25+00:00	2023-11-27T14:00:00+00:00	2023-11-28T12:48:00+00:00	GWh/d	100	30	130	Planned Outage	Regen Heater (Continuation)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000848_001	Dismissed	Planned	Withdrawal unavailability	2023-11-23T09:39:42+00:00	2023-11-27T14:00:00+00:00	2023-11-28T18:00:00+00:00	GWh/d	100	30	130	Planned Outage	Regen Heater (Continuation)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000846_002	Inactive	Planned	Injection unavailability	2023-11-27T14:00:50+00:00	2023-11-27T10:00:00+00:00	2023-11-27T14:00:00+00:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000846_001	Dismissed	Planned	Injection unavailability	2023-11-23T09:33:13+00:00	2023-11-27T10:00:00+00:00	2023-11-27T14:00:00+00:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000847_002	Inactive	Planned	Withdrawal unavailability	2023-11-27T13:59:01+00:00	2023-11-27T10:00:00+00:00	2023-11-27T13:58:00+00:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000847_001	Dismissed	Planned	Withdrawal unavailability	2023-11-23T09:34:15+00:00	2023-11-27T10:00:00+00:00	2023-11-27T14:00:00+00:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000840_003	Inactive	Planned	Withdrawal unavailability	2023-11-27T11:02:46+00:00	2023-11-18T05:00:00+00:00	2023-11-27T10:00:00+00:00	GWh/d	100	30	130	Planned Outage	Regen Heater Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000840_002	Dismissed	Planned	Withdrawal unavailability	2023-11-23T09:35:32+00:00	2023-11-18T05:00:00+00:00	2023-11-27T10:00:00+00:00	GWh/d	100	30	130	Planned Outage	Regen Heater Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000840_001	Dismissed	Planned	Withdrawal unavailability	2023-11-10T17:54:08+00:00	2023-11-18T05:00:00+00:00	2023-11-28T18:00:00+00:00	GWh/d	100	30	130	Planned Outage	Regen Heater Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000850_003	Inactive	Unplanned	Withdrawal unavailability	2023-11-27T10:37:34+00:00	2023-11-27T00:10:00+00:00	2023-11-27T10:36:00+00:00	GWh/d	130	0	130	Failure	H2S	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000850_002	Dismissed	Unplanned	Withdrawal unavailability	2023-11-27T07:14:03+00:00	2023-11-27T00:10:00+00:00	2023-11-27T10:00:00+00:00	GWh/d	130	0	130	Failure	H2S	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000850_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-27T00:21:50+00:00	2023-11-27T00:10:00+00:00	2023-11-27T12:00:00+00:00	GWh/d	130	0	130	Failure	H2S	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_000000000000000000841_003	Dismissed	Planned	Withdrawal unavailability	2023-11-13T08:15:45+00:00	2023-11-16T05:00:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000841_002	Dismissed	Planned	Withdrawal unavailability	2023-11-10T18:10:45+00:00	2023-11-16T05:00:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000841_001	Dismissed	Planned	Withdrawal unavailability	2023-11-10T18:05:48+00:00	2023-11-16T05:00:00+00:00	2023-11-28T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_003	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T14:25:28+00:00	2023-11-09T10:34:00+00:00	2023-11-09T14:25:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_002	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T13:23:48+00:00	2023-11-09T10:34:00+00:00	2023-11-09T14:30:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T10:35:13+00:00	2023-11-09T10:34:00+00:00	2023-11-09T13:00:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000837_002	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T07:20:15+00:00	2023-11-09T05:05:00+00:00	2023-11-09T07:20:00+00:00	GWh/d	130	0	130	Failure	Fuel Gas	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000837_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T05:24:11+00:00	2023-11-09T05:05:00+00:00	2023-11-09T09:00:00+00:00	GWh/d	130	0	130	Failure	Fuel Gas	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_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

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.