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
< 1 2 3 4 5 >
Aldbrough	ALD_000000000000000000694_002	Inactive	Unplanned	Injection unavailability	2022-10-06T15:33:31+01:00	2022-10-05T10:30:00+01:00	2022-10-06T15:30:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000694_001	Dismissed	Unplanned	Injection unavailability	2022-10-05T10:52:27+01:00	2022-10-05T10:30:00+01:00	2022-10-06T16:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000692_002	Inactive	Unplanned	Injection unavailability	2022-09-27T08:36:10+01:00	2022-09-27T08:00:00+01:00	2022-09-27T08:35:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000692_001	Dismissed	Unplanned	Injection unavailability	2022-09-27T08:19:15+01:00	2022-09-27T08:00:00+01:00	2022-09-27T12:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000683_002	Inactive	Planned	Injection unavailability	2022-09-07T18:01:40+01:00	2022-09-06T05:00:00+01:00	2022-09-07T17:58:00+01:00	GWh/d	311.56	0	311.56	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000683_001	Dismissed	Planned	Injection unavailability	2022-08-17T14:16:23+01:00	2022-09-06T05:00:00+01:00	2022-09-08T08:00:00+01:00	GWh/d	311.56	0	311.56	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_004	Inactive	Planned	Injection unavailability	2022-07-19T18:02:28+01:00	2022-07-01T05:00:00+01:00	2022-07-19T17:58:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_003	Dismissed	Planned	Injection unavailability	2022-06-27T09:19:11+01:00	2022-07-01T05:00:00+01:00	2022-07-19T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_002	Dismissed	Planned	Injection unavailability	2022-02-17T10:59:54+00:00	2022-07-01T05:00:00+01:00	2022-07-25T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_001	Dismissed	Planned	Injection unavailability	2020-07-11T21:45:24+01:00	2022-07-01T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000670_002	Inactive	Planned	Injection unavailability	2022-05-31T17:01:53+01:00	2022-05-31T08:00:00+01:00	2022-05-31T16:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000670_001	Dismissed	Planned	Injection unavailability	2022-05-25T16:29:35+01:00	2022-05-31T08:00:00+01:00	2022-05-31T16:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000658_002	Inactive	Planned	Injection unavailability	2022-05-23T14:34:19+01:00	2022-05-22T18:00:00+01:00	2022-05-23T14:30:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-3 Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000658_001	Dismissed	Planned	Injection unavailability	2022-03-17T10:19:38+00:00	2022-05-22T18:00:00+01:00	2022-05-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	GC-3 Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000657_002	Inactive	Planned	Injection unavailability	2022-05-22T11:22:50+01:00	2022-05-21T18:00:00+01:00	2022-05-22T11:25:00+01:00	GWh/d	211.29	100.27	311.56	Planned Outage	GC-2 commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000657_001	Dismissed	Planned	Injection unavailability	2022-03-17T10:17:23+00:00	2022-05-21T18:00:00+01:00	2022-05-22T18:00:00+01:00	GWh/d	211.29	100.27	311.56	Planned Outage	GC-2 commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000465_003	Inactive	Planned	Injection unavailability	2022-05-21T16:28:39+01:00	2022-05-08T05:00:00+01:00	2022-05-21T16:30:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000465_002	Dismissed	Planned	Injection unavailability	2021-10-06T22:32:34+01:00	2022-05-08T05:00:00+01:00	2022-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000465_001	Dismissed	Planned	Injection unavailability	2020-07-11T15:39:02+01:00	2022-05-08T05:00:00+01:00	2022-05-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_005	Inactive	Unplanned	Injection unavailability	2022-04-05T15:25:18+01:00	2022-04-04T07:00:00+01:00	2022-04-05T15:30:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_004	Dismissed	Unplanned	Injection unavailability	2022-04-04T16:27:34+01:00	2022-04-04T07:00:00+01:00	2022-04-05T16:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_003	Dismissed	Unplanned	Injection unavailability	2022-04-03T23:07:29+01:00	2022-04-04T07:00:00+01:00	2022-04-04T21:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_002	Dismissed	Unplanned	Injection unavailability	2022-04-03T23:07:12+01:00	2022-04-04T07:00:00+01:00	2022-04-04T20:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_001	Dismissed	Unplanned	Injection unavailability	2022-04-03T14:00:31+01:00	2022-04-04T05:00:00+01:00	2022-04-04T20:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000655_002	Inactive	Planned	Injection unavailability	2022-03-24T09:18:19+00:00	2022-03-24T05:00:00+00:00	2022-03-24T09:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	132KV Switchover	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000655_001	Dismissed	Planned	Injection unavailability	2022-03-16T14:46:23+00:00	2022-03-24T05:00:00+00:00	2022-03-24T09:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	132KV Switchover	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_004	Inactive	Unplanned	Injection unavailability	2022-03-11T19:01:53+00:00	2022-01-31T19:32:00+00:00	2022-03-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_003	Dismissed	Unplanned	Injection unavailability	2022-03-04T14:28:58+00:00	2022-01-31T19:32:00+00:00	2022-03-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_002	Dismissed	Unplanned	Injection unavailability	2022-02-25T20:49:43+00:00	2022-01-31T19:32:00+00:00	2022-03-04T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_001	Dismissed	Unplanned	Injection unavailability	2022-01-31T19:33:02+00:00	2022-01-31T19:32:00+00:00	2022-02-28T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000653_002	Inactive	Unplanned	Injection unavailability	2022-03-07T08:23:38+00:00	2022-03-07T02:05:00+00:00	2022-03-07T08:15:00+00:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000653_001	Dismissed	Unplanned	Injection unavailability	2022-03-07T02:06:03+00:00	2022-03-07T02:05:00+00:00	2022-03-07T12:00:00+00:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000652_002	Inactive	Unplanned	Injection unavailability	2022-02-24T12:32:45+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:30:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000652_001	Dismissed	Unplanned	Injection unavailability	2022-02-24T11:33:13+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:45:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000647_002	Inactive	Unplanned	Injection unavailability	2022-02-16T20:51:36+00:00	2022-02-16T19:10:00+00:00	2022-02-16T20:52:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000647_001	Dismissed	Unplanned	Injection unavailability	2022-02-16T19:39:03+00:00	2022-02-16T19:10:00+00:00	2022-02-17T19:10:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000642_002	Inactive	Unplanned	Injection unavailability	2022-01-31T17:02:32+00:00	2022-01-30T00:30:00+00:00	2022-01-31T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Compressor failed to start	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000642_001	Dismissed	Unplanned	Injection unavailability	2022-01-30T00:48:39+00:00	2022-01-30T00:30:00+00:00	2022-01-31T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Compressor failed to start	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000616_003	Inactive	Planned	Injection unavailability	2022-01-30T10:20:19+00:00	2021-11-18T12:40:00+00:00	2022-01-31T10:20:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp unavailability due to degraded N2 generation performance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000616_002	Dismissed	Planned	Injection unavailability	2022-01-11T04:15:46+00:00	2021-11-18T12:40:00+00:00	2022-01-31T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp unavailability due to degraded N2 generation performance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000616_001	Dismissed	Planned	Injection unavailability	2021-11-18T12:56:10+00:00	2021-11-18T12:40:00+00:00	2022-01-31T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3 unavailability due to degraded N2 generation performance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000641_002	Inactive	Unplanned	Injection unavailability	2022-01-27T10:20:52+00:00	2022-01-27T00:00:00+00:00	2022-01-27T10:30:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000641_001	Dismissed	Unplanned	Injection unavailability	2022-01-27T00:49:22+00:00	2022-01-27T00:00:00+00:00	2022-01-27T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000625_002	Inactive	Planned	Injection unavailability	2022-01-15T14:59:07+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000625_001	Dismissed	Planned	Injection unavailability	2021-12-16T14:07:39+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000634_002	Inactive	Unplanned	Injection unavailability	2022-01-13T16:37:09+00:00	2022-01-13T14:20:00+00:00	2022-01-13T16:30:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000634_001	Dismissed	Unplanned	Injection unavailability	2022-01-13T14:25:34+00:00	2022-01-13T14:20:00+00:00	2022-01-13T18:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_003	Inactive	Unplanned	Injection unavailability	2022-01-10T22:53:09+00:00	2022-01-10T06:30:00+00:00	2022-01-10T22:55:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site/ Nitrogen unit failure caused by power loss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_002	Dismissed	Unplanned	Injection unavailability	2022-01-10T11:19:13+00:00	2022-01-10T06:30:00+00:00	2022-01-12T18:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site/ Nitrogen unit failure caused by power loss	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000632_001	Dismissed	Unplanned	Injection unavailability	2022-01-10T06:43:39+00:00	2022-01-10T06:30:00+00:00	2022-01-10T12:00:00+00:00	GWh/d	311.56	0	311.56	Failure	Power loss - full site	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.