Last update at: 2023-01-27T19:00:00+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
1 2 3 4 5 >
Aldbrough	ALD_000000000000000000427_001	Dismissed	Planned	Injection unavailability	2020-01-29T09:40:54+00:00	2020-05-11T05:00:00+01:00	2020-05-18T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000427_002	Dismissed	Planned	Injection unavailability	2020-04-07T10:15:26+01:00	2020-09-13T05:00:00+01:00	2020-09-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000427_003	Inactive	Planned	Injection unavailability	2020-09-20T09:01:45+01:00	2020-09-13T05:00:00+01:00	2020-09-20T09:02:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000428_001	Dismissed	Planned	Withdrawal unavailability	2020-01-29T09:42:51+00:00	2020-05-11T05:00:00+01:00	2020-05-18T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000428_002	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:16:17+01:00	2020-09-13T05:00:00+01:00	2020-09-20T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000428_003	Inactive	Planned	Withdrawal unavailability	2020-09-20T09:00:32+01:00	2020-09-13T05:00:00+01:00	2020-09-20T09:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000429_001	Dismissed	Planned	Withdrawal unavailability	2020-01-29T09:46:22+00:00	2020-05-03T05:00:00+01:00	2020-05-11T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000429_002	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:17:35+01:00	2020-09-05T05:00:00+01:00	2020-09-13T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000429_003	Inactive	Planned	Withdrawal unavailability	2020-09-13T06:01:53+01:00	2020-09-05T05:00:00+01:00	2020-09-13T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000430_001	Dismissed	Planned	Withdrawal unavailability	2020-01-29T09:48:28+00:00	2020-05-26T05:00:00+01:00	2020-06-09T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000430_002	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:19:13+01:00	2020-09-26T05:00:00+01:00	2020-10-09T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000430_003	Inactive	Planned	Withdrawal unavailability	2020-10-08T21:47:29+01:00	2020-09-26T05:00:00+01:00	2020-10-08T21:45:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000431_001	Dismissed	Planned	Injection unavailability	2020-01-29T09:51:27+00:00	2020-11-10T05:00:00+00:00	2020-11-17T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000431_002	Inactive	Planned	Injection unavailability	2020-11-17T19:01:52+00:00	2020-11-10T05:00:00+00:00	2020-11-17T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000432_001	Dismissed	Planned	Injection unavailability	2020-01-29T09:54:58+00:00	2020-10-12T05:00:00+01:00	2020-10-25T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000432_002	Dismissed	Planned	Injection unavailability	2020-10-25T16:27:18+00:00	2020-10-12T05:00:00+01:00	2020-10-26T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000432_003	Inactive	Planned	Injection unavailability	2020-10-26T06:01:50+00:00	2020-10-12T05:00:00+01:00	2020-10-26T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000433_001	Dismissed	Planned	Injection unavailability	2020-01-29T09:56:38+00:00	2020-10-26T05:00:00+00:00	2020-11-08T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000433_002	Dismissed	Planned	Injection unavailability	2020-11-04T15:54:43+00:00	2020-10-26T05:00:00+00:00	2020-11-10T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Extended maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000433_003	Dismissed	Planned	Injection unavailability	2020-11-10T15:12:22+00:00	2020-10-26T05:00:00+00:00	2020-11-12T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Further extension to maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000433_004	Inactive	Planned	Injection unavailability	2020-11-12T12:58:15+00:00	2020-10-26T05:00:00+00:00	2020-11-12T13:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Further extension to maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000434_001	Dismissed	Planned	Injection unavailability	2020-01-29T09:58:43+00:00	2020-11-09T06:00:00+00:00	2020-11-09T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000434_002	Inactive	Planned	Injection unavailability	2020-11-09T17:57:46+00:00	2020-11-09T06:00:00+00:00	2020-11-09T17:58:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000438_001	Dismissed	Unplanned	Injection unavailability	2020-03-15T11:37:13+00:00	2020-03-15T11:45:00+00:00	2020-03-15T17:45:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000438_002	Inactive	Unplanned	Injection unavailability	2020-03-15T14:44:02+00:00	2020-03-15T11:45:00+00:00	2020-03-15T14:45:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000439_001	Dismissed	Unplanned	Injection unavailability	2020-03-15T18:31:05+00:00	2020-03-15T18:30:00+00:00	2020-03-16T18:30:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000439_002	Dismissed	Unplanned	Injection unavailability	2020-03-16T08:06:03+00:00	2020-03-15T18:30:00+00:00	2020-03-16T08:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000441_001	Dismissed	Unplanned	Injection unavailability	2020-04-07T11:51:41+01:00	2020-04-07T11:40:00+01:00	2020-04-07T15:40:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000441_002	Inactive	Unplanned	Injection unavailability	2020-04-07T14:08:12+01:00	2020-04-07T11:40:00+01:00	2020-04-07T15:40:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000442_001	Dismissed	Unplanned	Injection unavailability	2020-04-21T20:16:06+01:00	2020-04-21T20:15:00+01:00	2020-04-22T00:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000442_002	Inactive	Unplanned	Injection unavailability	2020-04-21T21:19:44+01:00	2020-04-21T20:15:00+01:00	2020-04-21T21:15:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000451_001	Dismissed	Planned	Injection unavailability	2020-06-08T11:04:28+01:00	2020-06-09T08:00:00+01:00	2020-06-09T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000451_002	Dismissed	Planned	Injection unavailability	2020-06-09T12:30:28+01:00	2020-06-09T08:00:00+01:00	2020-06-09T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000452_001	Dismissed	Unplanned	Withdrawal unavailability	2020-06-09T02:57:00+01:00	2020-06-09T02:00:00+01:00	2020-06-09T05:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000452_002	Inactive	Unplanned	Withdrawal unavailability	2020-06-09T03:36:52+01:00	2020-06-09T02:00:00+01:00	2020-06-09T05:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000453_001	Dismissed	Unplanned	Withdrawal unavailability	2020-06-16T20:17:46+01:00	2020-06-16T18:30:00+01:00	2020-06-16T20:20:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000453_002	Inactive	Unplanned	Withdrawal unavailability	2020-06-16T20:20:38+01:00	2020-06-16T18:30:00+01:00	2020-06-16T19:51:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000457_001	Dismissed	Planned	Storage unavailability	2020-07-11T13:21:51+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	TWh	2.3352656	0	2.3352656	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000457_002	Dismissed	Planned	Injection unavailability	2020-07-11T13:31:39+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_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_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_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_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_000000000000000000459_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T13:46:23+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000459_002	Dismissed	Planned	Withdrawal unavailability	2020-11-27T11:57:46+00:00	2021-05-08T05:00:00+01:00	2021-05-16T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000459_003	Inactive	Planned	Withdrawal unavailability	2021-05-16T17:52:34+01:00	2021-05-08T05:00:00+01:00	2021-05-16T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T13:51:55+01:00	2021-05-06T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_002	Dismissed	Planned	Withdrawal unavailability	2020-11-27T12:01:09+00:00	2021-05-02T05:00:00+01:00	2021-05-08T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_003	Dismissed	Planned	Withdrawal unavailability	2020-12-01T10:21:49+00:00	2021-05-02T05:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000460_004	Dismissed	Planned	Withdrawal unavailability	2021-03-12T10:30:05+00:00	2021-05-01T05:00:00+01:00	2021-05-08T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage. Then into main site outage.	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.