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
< 3 4 5 6 7 >
Atwick	ATW_000000000000000000897_001	Dismissed	Planned	Withdrawal unavailability	2024-03-06T16:52:32+00:00	2024-03-20T18:00:00+00:00	2024-06-01T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Phase 6 Reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000901_005	Dismissed	Unplanned	Withdrawal unavailability	2024-04-07T06:51:00+01:00	2024-03-28T12:10:00+00:00	2024-04-09T18:00:00+01:00	GWh/d	50	80	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000901_004	Dismissed	Unplanned	Withdrawal unavailability	2024-03-31T15:04:26+01:00	2024-03-28T12:10:00+00:00	2024-04-07T18:00:00+01:00	GWh/d	50	80	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000901_003	Dismissed	Unplanned	Withdrawal unavailability	2024-03-28T15:12:40+00:00	2024-03-28T12:10:00+00:00	2024-03-31T18:00:00+01:00	GWh/d	50	80	130	Failure	.	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
Aldbrough	ALD_000000000000000000903_001	Dismissed	Planned	Withdrawal unavailability	2024-03-28T15:27:28+00:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000902_001	Dismissed	Planned	Injection unavailability	2024-03-28T15:26:14+00:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Software download.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000899_001	Dismissed	Unplanned	Injection unavailability	2024-03-27T14:34:28+00:00	2024-03-27T14:35:00+00:00	2024-03-27T17:00:00+00:00	GWh/d	311.56	0	311.56	Failure	ESD fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000900_001	Dismissed	Unplanned	Withdrawal unavailability	2024-03-27T14:35:37+00:00	2024-03-27T14:35:00+00:00	2024-03-27T17:00:00+00:00	GWh/d	342.3	0	342.3	Failure	ESD fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000895_001	Dismissed	Planned	Withdrawal unavailability	2024-03-04T08:26:03+00:00	2024-03-27T08:00:00+00:00	2024-03-27T14:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000894_001	Dismissed	Planned	Injection unavailability	2024-03-04T08:24:29+00:00	2024-03-27T08:00:00+00:00	2024-03-27T14:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000896_002	Dismissed	Planned	Withdrawal unavailability	2024-03-06T15:47:47+00:00	2024-03-19T07:00:00+00:00	2024-03-20T18:00:00+00:00	GWh/d	97.44	32.56	130	Planned Outage	Phase 6 Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000896_001	Dismissed	Planned	Withdrawal unavailability	2024-03-06T14:08:40+00:00	2024-03-19T07:00:00+00:00	2024-03-20T18:00:00+00:00	GWh/d	100	30	130	Planned Outage	Phase 6 Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_004	Dismissed	Planned	Withdrawal unavailability	2024-03-06T14:04:53+00:00	2024-02-13T18:00:00+00:00	2024-03-19T07:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000886_003	Dismissed	Planned	Withdrawal unavailability	2024-02-12T08:13:23+00:00	2024-02-13T18:00:00+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_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_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_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
Aldbrough	ALD_000000000000000000893_001	Dismissed	Unplanned	Injection unavailability	2024-02-26T17:45:57+00:00	2024-02-26T17:45:00+00:00	2024-02-26T22:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000892_001	Dismissed	Planned	Injection unavailability	2024-02-13T15:01:09+00:00	2024-02-14T05:00:00+00:00	2024-02-14T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-1 HP BD valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000889_003	Dismissed	Unplanned	Withdrawal unavailability	2024-02-12T08:12:19+00:00	2024-02-08T16:10:00+00:00	2024-02-13T18:00:00+00:00	GWh/d	100	30	130	Failure	Phase 6 - Regen heater	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000889_002	Dismissed	Unplanned	Withdrawal unavailability	2024-02-08T16:16:16+00:00	2024-02-08T16:10:00+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_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
Aldbrough	ALD_000000000000000000890_001	Dismissed	Unplanned	Injection unavailability	2024-02-13T06:32:04+00:00	2024-02-13T06:30:00+00:00	2024-02-13T18:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Site Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000891_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-13T06:33:25+00:00	2024-02-13T06:30:00+00:00	2024-02-13T18:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Site Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	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_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_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
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
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
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_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_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_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_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_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_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
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_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
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_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_000000000000000000791_008	Dismissed	Planned	Withdrawal unavailability	2023-12-05T07:51:11+00:00	2024-01-15T18:00:00+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_007	Dismissed	Planned	Withdrawal unavailability	2023-11-23T09:43:25+00:00	2023-12-19T18:00:00+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_006	Dismissed	Planned	Withdrawal unavailability	2023-11-10T17:49:02+00:00	2023-11-28T18:00:00+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_005	Dismissed	Planned	Withdrawal unavailability	2023-11-06T17:49:25+00:00	2023-11-16T05:00:00+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_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

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.