Last update at: 2023-09-20T16:00:00+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 >
Aldbrough	ALD_000000000000000000477_002	Active	Planned	Injection unavailability	2021-06-30T10:43:14+01:00	2023-10-16T05:00:00+01:00	2023-10-21T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000477_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:17:27+01:00	2023-10-16T05:00:00+01:00	2023-10-21T05:00:00+01:00	GWh/d	0	311.56	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000590_002	Inactive	Unplanned	Injection unavailability	2021-06-30T07:46:01+01:00	2021-06-30T05:37:00+01:00	2021-06-30T07:40:00+01:00	GWh/d	7.5	22.5	30	Failure	No 3 Compressor.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000590_001	Dismissed	Unplanned	Injection unavailability	2021-06-30T05:38:17+01:00	2021-06-30T05:37:00+01:00	2021-06-30T12:00:00+01:00	GWh/d	7.5	22.5	30	Failure	No 3 Compressor.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000588_003	Inactive	Unplanned	Injection unavailability	2021-06-18T15:01:06+01:00	2021-06-11T18:15:00+01:00	2021-06-18T15:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3 NRV replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000588_002	Dismissed	Unplanned	Injection unavailability	2021-06-16T19:09:41+01:00	2021-06-11T18:15:00+01:00	2021-06-18T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3 NRV replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000588_001	Dismissed	Unplanned	Injection unavailability	2021-06-15T18:16:00+01:00	2021-06-11T18:15:00+01:00	2021-06-17T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3 NRV replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_006	Inactive	Unplanned	Injection unavailability	2021-06-15T15:36:39+01:00	2021-05-16T18:00:00+01:00	2021-06-16T14:30:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_005	Dismissed	Unplanned	Injection unavailability	2021-06-11T08:28:58+01:00	2021-05-16T18:00:00+01:00	2021-06-16T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_004	Dismissed	Unplanned	Injection unavailability	2021-06-06T11:53:39+01:00	2021-05-16T18:00:00+01:00	2021-06-13T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_003	Dismissed	Planned	Injection unavailability	2021-06-03T12:23:10+01:00	2021-05-16T18:00:00+01:00	2021-06-06T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_002	Dismissed	Planned	Injection unavailability	2021-05-28T14:03:24+01:00	2021-05-16T18:00:00+01:00	2021-06-04T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000567_001	Dismissed	Planned	Injection unavailability	2021-03-12T10:41:54+00:00	2021-05-16T18:00:00+01:00	2021-05-28T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Outage to cover ASV and NRV works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000458_004	Inactive	Planned	Injection unavailability	2021-05-16T17:52:10+01:00	2021-05-08T05:00:00+01:00	2021-05-16T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000458_003	Dismissed	Planned	Injection unavailability	2020-11-27T11:58:26+00:00	2021-05-08T05:00:00+01:00	2021-05-16T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000458_002	Dismissed	Planned	Injection unavailability	2020-07-11T13:43:50+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000458_001	Dismissed	Planned	Injection unavailability	2020-07-11T13:34:55+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000576_002	Inactive	Planned	Injection unavailability	2021-04-28T13:01:53+01:00	2021-04-28T09:00:00+01:00	2021-04-28T12:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Outage required for 36" inlet valve testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000576_001	Dismissed	Planned	Injection unavailability	2021-04-23T09:35:25+01:00	2021-04-28T09:00:00+01:00	2021-04-28T12:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Outage required for 36" inlet valve testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000578_002	Inactive	Unplanned	Injection unavailability	2021-04-27T17:10:05+01:00	2021-04-27T12:00:00+01:00	2021-04-27T17:10:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000578_001	Dismissed	Unplanned	Injection unavailability	2021-04-27T11:59:06+01:00	2021-04-27T12:00:00+01:00	2021-04-27T21:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000574_002	Inactive	Unplanned	Injection unavailability	2021-04-15T16:59:12+01:00	2021-04-15T13:19:00+01:00	2021-04-15T17:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000574_001	Dismissed	Unplanned	Injection unavailability	2021-04-15T13:20:26+01:00	2021-04-15T13:19:00+01:00	2021-04-15T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		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
Aldbrough	ALD_000000000000000000560_001	Dismissed	Unplanned	Injection unavailability	2021-02-16T18:50:50+00:00	2021-02-16T17:30:00+00:00	2021-02-18T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		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
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
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
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_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
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_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_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

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.