Last update at: 2023-03-22T10:30:00+00:00

**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_000000000000000000540_002	Dismissed	Planned	Withdrawal unavailability	2021-01-08T08:09:22+00:00	2021-01-08T08:30:00+00:00	2021-01-08T12:00:00+00:00	GWh/d	130	0	130	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000539_002	Dismissed	Planned	Injection unavailability	2021-01-08T08:09:44+00:00	2021-01-08T08:30:00+00:00	2021-01-08T12:00:00+00:00	GWh/d	30	0	30	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000540_004	Inactive	Planned	Withdrawal unavailability	2021-01-08T10:40:06+00:00	2021-01-08T09:00:00+00:00	2021-01-08T10:35:00+00:00	GWh/d	130	0	130	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000540_003	Dismissed	Planned	Withdrawal unavailability	2021-01-08T08:34:55+00:00	2021-01-08T09:00:00+00:00	2021-01-08T12:00:00+00:00	GWh/d	130	0	130	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000539_004	Dismissed	Planned	Injection unavailability	2021-01-08T10:39:30+00:00	2021-01-08T09:00:00+00:00	2021-01-08T10:35:00+00:00	GWh/d	30	0	30	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000539_003	Dismissed	Planned	Injection unavailability	2021-01-08T08:34:40+00:00	2021-01-08T09:00:00+00:00	2021-01-08T12:00:00+00:00	GWh/d	30	0	30	Planned Outage	Fire and Gas Detection Testing	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000549_002	Inactive	Unplanned	Withdrawal unavailability	2021-01-09T11:12:01+00:00	2021-01-09T08:00:00+00:00	2021-01-09T11:00:00+00:00	GWh/d	12	118	130	Failure	High Grid Pressure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000549_001	Dismissed	Unplanned	Withdrawal unavailability	2021-01-09T08:01:43+00:00	2021-01-09T08:00:00+00:00	2021-01-09T18:00:00+00:00	GWh/d	12	118	130	Failure	High Grid Pressure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000550_003	Inactive	Planned	Injection unavailability	2021-01-15T07:52:33+00:00	2021-01-09T09:00:00+00:00	2021-01-15T07:53:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000550_002	Dismissed	Planned	Injection unavailability	2021-01-09T11:13:12+00:00	2021-01-09T09:00:00+00:00	2021-01-15T18:00:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000550_001	Dismissed	Planned	Injection unavailability	2021-01-09T10:40:26+00:00	2021-01-09T09:00:00+00:00	2021-01-15T18:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000551_002	Inactive	Unplanned	Withdrawal unavailability	2021-01-09T13:58:28+00:00	2021-01-09T11:00:00+00:00	2021-01-09T13:57:00+00:00	GWh/d	30	100	130	Failure	Vortisep Level Indication(s) failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000551_001	Dismissed	Unplanned	Withdrawal unavailability	2021-01-09T11:12:59+00:00	2021-01-09T11:00:00+00:00	2021-01-09T18:00:00+00:00	GWh/d	30	100	130	Failure	Vortisep Level Indication(s) failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000552_004	Inactive	Unplanned	Injection unavailability	2021-01-18T09:39:40+00:00	2021-01-17T18:46:00+00:00	2021-01-18T09:15:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000552_003	Dismissed	Unplanned	Injection unavailability	2021-01-17T22:18:17+00:00	2021-01-17T18:46:00+00:00	2021-01-18T18:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000552_002	Dismissed	Unplanned	Injection unavailability	2021-01-17T22:08:29+00:00	2021-01-17T18:46:00+00:00	2021-01-18T18:00:00+00:00	GWh/d	30	0	30	Failure	Compressor logic issues	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000552_001	Dismissed	Unplanned	Injection unavailability	2021-01-17T18:48:36+00:00	2021-01-17T18:46:00+00:00	2021-01-18T00:00:00+00:00	GWh/d	30	0	30	Failure	Compressor logic issues	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000553_002	Inactive	Unplanned	Injection unavailability	2021-01-18T15:51:19+00:00	2021-01-17T19:40:00+00:00	2021-01-18T15:55:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000553_001	Dismissed	Unplanned	Injection unavailability	2021-01-17T19:42:35+00:00	2021-01-17T19:40:00+00:00	2021-01-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000544_001	Dismissed	Planned	Storage unavailability	2020-12-19T00:06:56+00:00	2021-01-18T06:00:00+00:00	2021-01-19T18:00:00+00:00	TWh	0.41988	2.7200014	3.1398814	Planned Outage	Cavity 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_006	Inactive	Planned	Injection unavailability	2021-02-03T13:55:46+00:00	2021-01-24T05:00:00+00:00	2021-02-03T13:57:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_005	Dismissed	Planned	Injection unavailability	2021-02-02T17:39:55+00:00	2021-01-24T05:00:00+00:00	2021-02-03T18:00:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_004	Dismissed	Planned	Injection unavailability	2021-01-31T11:50:41+00:00	2021-01-24T05:00:00+00:00	2021-02-02T18:00:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_003	Dismissed	Planned	Injection unavailability	2021-01-28T12:09:17+00:00	2021-01-24T05:00:00+00:00	2021-02-01T18:00:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_002	Dismissed	Planned	Injection unavailability	2020-12-03T11:34:33+00:00	2021-01-24T05:00:00+00:00	2021-01-30T18:00:00+00:00	GWh/d	30	0	30	Planned Outage	Compressor outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000532_001	Dismissed	Planned	Injection unavailability	2020-12-03T11:30:17+00:00	2021-01-24T05:00:00+00:00	2021-01-30T18:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000533_005	Inactive	Planned	Withdrawal unavailability	2021-02-03T13:32:23+00:00	2021-01-24T05:00:00+00:00	2021-02-03T13:35:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	Compressor Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000533_004	Dismissed	Planned	Withdrawal unavailability	2021-02-02T17:40:17+00:00	2021-01-24T05:00:00+00:00	2021-02-03T18:00:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	Compressor Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000533_003	Dismissed	Planned	Withdrawal unavailability	2021-01-31T11:50:01+00:00	2021-01-24T05:00:00+00:00	2021-02-02T18:00:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	Compressor Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000533_002	Dismissed	Planned	Withdrawal unavailability	2021-01-28T12:09:01+00:00	2021-01-24T05:00:00+00:00	2021-02-01T18:00:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	Compressor Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000533_001	Dismissed	Planned	Withdrawal unavailability	2020-12-03T11:34:00+00:00	2021-01-24T05:00:00+00:00	2021-01-30T18:00:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	Compressor Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000554_002	Inactive	Unplanned	Injection unavailability	2021-01-31T15:20:00+00:00	2021-01-30T21:35:00+00:00	2021-01-31T15:20:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000554_001	Dismissed	Unplanned	Injection unavailability	2021-01-30T21:36:06+00:00	2021-01-30T21:35:00+00:00	2021-01-31T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000555_002	Inactive	Unplanned	Withdrawal unavailability	2021-02-01T10:09:58+00:00	2021-02-01T08:59:00+00:00	2021-02-01T10:10:00+00:00	GWh/d	81.2	48.8	130	Failure	PH6 stream8 + vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000555_001	Dismissed	Unplanned	Withdrawal unavailability	2021-02-01T09:02:57+00:00	2021-02-01T08:59:00+00:00	2021-02-01T18:00:00+00:00	GWh/d	81.2	48.8	130	Failure	PH6 stream8 + vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000544_003	Dismissed	Planned	Storage unavailability	2021-01-27T08:09:11+00:00	2021-02-08T06:00:00+00:00	2021-02-09T18:00:00+00:00	TWh	0.41988	2.7200014	3.1465328	Planned Outage	Cavity 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000544_002	Dismissed	Planned	Storage unavailability	2021-01-09T07:59:46+00:00	2021-02-08T06:00:00+00:00	2021-02-09T18:00:00+00:00	TWh	0.41988	2.7200014	3.1398814	Planned Outage	Cavity 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000558_002	Inactive	Unplanned	Withdrawal unavailability	2021-02-14T10:40:31+00:00	2021-02-13T17:00:00+00:00	2021-02-14T10:45:00+00:00	GWh/d	32.5	97.5	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000558_001	Dismissed	Unplanned	Withdrawal unavailability	2021-02-13T17:18:27+00:00	2021-02-13T17:00:00+00:00	2021-02-14T16:00:00+00:00	GWh/d	32.5	97.5	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000557_005	Inactive	Planned	Withdrawal unavailability	2021-02-16T17:09:30+00:00	2021-02-16T06:30:00+00:00	2021-02-16T17:10:00+00:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000557_004	Dismissed	Planned	Withdrawal unavailability	2021-02-16T10:49:47+00:00	2021-02-16T06:30:00+00:00	2021-02-16T18:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000557_003	Dismissed	Planned	Withdrawal unavailability	2021-02-16T09:29:40+00:00	2021-02-16T06:30:00+00:00	2021-02-16T11:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000557_002	Dismissed	Planned	Withdrawal unavailability	2021-02-16T08:15:39+00:00	2021-02-16T06:30:00+00:00	2021-02-16T09:30:00+00:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000557_001	Dismissed	Planned	Withdrawal unavailability	2021-02-02T19:52:50+00:00	2021-02-16T06:30:00+00:00	2021-02-16T08:30:00+00:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000556_005	Inactive	Planned	Injection unavailability	2021-02-16T17:09:07+00:00	2021-02-16T06:30:00+00:00	2021-02-16T17:10:00+00:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000556_004	Dismissed	Planned	Injection unavailability	2021-02-16T10:50:24+00:00	2021-02-16T06:30:00+00:00	2021-02-16T18:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000556_003	Dismissed	Planned	Injection unavailability	2021-02-16T09:29:20+00:00	2021-02-16T06:30:00+00:00	2021-02-16T11:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000556_002	Dismissed	Planned	Injection unavailability	2021-02-16T08:16:35+00:00	2021-02-16T06:30:00+00:00	2021-02-16T09:30:00+00:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000556_001	Dismissed	Planned	Injection unavailability	2021-02-02T19:51:50+00:00	2021-02-16T06:30:00+00:00	2021-02-16T08:30:00+00:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000560_002	Inactive	Unplanned	Injection unavailability	2021-02-17T16:49:42+00:00	2021-02-16T17:30:00+00:00	2021-02-17T17:00:00+00:00	GWh/d	111.02	200.54	311.56	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.