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 >
Atwick	ATW_000000000000000000888_004	Inactive	Unplanned	Withdrawal unavailability	2024-02-08T16:13:20+00:00	2024-02-08T01:41:00+00:00	2024-02-08T16:10:00+00:00	GWh/d	130	0	130	Failure	Dewpoint	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000889_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-08T07:30:33+00:00	2024-02-08T18:00:00+00:00	2024-02-16T18:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 - Regen heater	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000888_003	Dismissed	Unplanned	Withdrawal unavailability	2024-02-08T07:28:23+00:00	2024-02-08T01:41:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	130	0	130	Failure	Dewpoint	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000885_003	Inactive	Unplanned	Withdrawal unavailability	2024-02-08T07:26:46+00:00	2024-02-06T23:30:00+00:00	2024-02-08T01:41:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000887_002	Dismissed	Planned	Injection unavailability	2024-02-08T03:16:10+00:00	2024-02-08T05:00:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2 blow down valve change.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000888_002	Dismissed	Unplanned	Withdrawal unavailability	2024-02-08T02:19:53+00:00	2024-02-08T01:41:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	100	0	130	Failure	Dewpoint	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000888_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-08T01:47:09+00:00	2024-02-08T01:41:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	100	30	130	Failure	Dewpoint	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_002	Dismissed	Planned	Withdrawal unavailability	2024-02-07T14:29:46+00:00	2024-02-16T18:00:00+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_000000000000000000885_002	Dismissed	Unplanned	Withdrawal unavailability	2024-02-07T14:29:08+00:00	2024-02-06T23:30:00+00:00	2024-02-16T18:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000887_001	Dismissed	Planned	Injection unavailability	2024-02-07T09:56:35+00:00	2024-02-08T05:00:00+00:00	2024-02-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-2 blow down valve change.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_005	Inactive	Planned	Withdrawal unavailability	2024-02-07T00:13:59+00:00	2024-02-06T16:25:00+00:00	2024-02-06T23:30:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_001	Dismissed	Planned	Withdrawal unavailability	2024-02-06T22:40:14+00:00	2024-02-07T17:00:00+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_000000000000000000883_004	Dismissed	Planned	Withdrawal unavailability	2024-02-06T22:36:39+00:00	2024-02-06T16:25:00+00:00	2024-02-06T23:30:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000885_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-06T22:32:16+00:00	2024-02-06T23:30:00+00:00	2024-02-07T17:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 unavailable	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_003	Dismissed	Planned	Withdrawal unavailability	2024-02-06T16:26:08+00:00	2024-02-06T16:25:00+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_000000000000000000882_003	Inactive	Planned	Withdrawal unavailability	2024-02-06T16:25:28+00:00	2024-02-05T08:00:00+00:00	2024-02-06T16:25:00+00:00	GWh/d	100	30	130	Planned Outage	Phase 6 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000884_002	Inactive	Unplanned	Injection unavailability	2024-02-06T16:05:23+00:00	2024-02-06T09:35:00+00:00	2024-02-06T16:05:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 outage due to failed cooling fan	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000884_001	Dismissed	Unplanned	Injection unavailability	2024-02-06T09:36:58+00:00	2024-02-06T09:35:00+00:00	2024-02-06T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 outage due to failed cooling fan	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_002	Dismissed	Planned	Withdrawal unavailability	2024-02-05T15:06:11+00:00	2024-02-06T18:00:00+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_000000000000000000882_002	Dismissed	Planned	Withdrawal unavailability	2024-02-05T14:55:58+00:00	2024-02-05T08:00:00+00:00	2024-02-06T18:00:00+00:00	GWh/d	100	30	130	Planned Outage	Phase 6 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000791_012	Inactive	Planned	Withdrawal unavailability	2024-02-05T08:01:30+00:00	2024-01-15T19:30:00+00:00	2024-02-05T08:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000883_001	Dismissed	Planned	Withdrawal unavailability	2024-02-02T16:32:29+00:00	2024-02-05T17:00:00+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_000000000000000000882_001	Dismissed	Planned	Withdrawal unavailability	2024-02-02T16:30:06+00:00	2024-02-05T08:00:00+00:00	2024-02-05T17:00:00+00:00	GWh/d	100	30	130	Planned Outage	Phase 6 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000791_011	Dismissed	Planned	Withdrawal unavailability	2024-02-02T16:27:11+00:00	2024-01-15T19:30:00+00:00	2024-02-05T08:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_002	Dismissed	Unplanned	Storage unavailability	2024-02-01T12:41:10+00:00	2024-03-30T05:00:00+00:00	2024-05-07T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000795_002	Dismissed	Unplanned	Storage unavailability	2024-02-01T12:36:36+00:00	2024-09-02T05:00:00+01:00	2024-10-11T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	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_000000000000000000791_010	Dismissed	Planned	Withdrawal unavailability	2024-01-15T19:13:50+00:00	2024-01-15T19:30:00+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_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_000000000000000000791_009	Dismissed	Planned	Withdrawal unavailability	2024-01-15T16:59:22+00:00	2024-01-15T22:00:00+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_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
Aldbrough	ALD_000000000000000000876_004	Inactive	Unplanned	Withdrawal unavailability	2024-01-13T08:44:07+00:00	2024-01-12T10:08:00+00:00	2024-01-13T08:43:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000877_003	Inactive	Unplanned	Injection unavailability	2024-01-13T08:43:45+00:00	2024-01-12T15:31:00+00:00	2024-01-13T08:43:00+00:00	GWh/d	311.56	0	311.56	Failure	Loss of Injection due to loss of Alarms	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000877_002	Dismissed	Unplanned	Injection unavailability	2024-01-12T22:42:16+00:00	2024-01-12T15:31:00+00:00	2024-01-13T12:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Loss of Injection due to loss of Alarms	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_003	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T22:41:08+00:00	2024-01-12T10:08:00+00:00	2024-01-13T12:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	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_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_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_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
Aldbrough	ALD_000000000000000000876_002	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T15:34:48+00:00	2024-01-12T10:08:00+00:00	2024-01-12T23:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000877_001	Dismissed	Unplanned	Injection unavailability	2024-01-12T15:34:23+00:00	2024-01-12T15:31:00+00:00	2024-01-12T23:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Loss of Injection due to loss of Alarms	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000873_005	Inactive	Unplanned	Injection unavailability	2024-01-12T15:26:58+00:00	2024-01-11T11:45:00+00:00	2024-01-12T15:27:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T10:09:22+00:00	2024-01-12T10:08:00+00:00	2024-01-12T16:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_006	Inactive	Unplanned	Withdrawal unavailability	2024-01-12T01:55:16+00:00	2024-01-11T11:45:00+00:00	2024-01-12T01:56:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_005	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T01:02:15+00:00	2024-01-11T11:45:00+00:00	2024-01-12T02:00:00+00:00	GWh/d	342.3	0	342.3	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.