Last update at: 2023-11-28T13:00:00+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_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
Aldbrough	ALD_000000000000000000460_005	Dismissed	Planned	Withdrawal unavailability	2021-04-29T12:14:48+01:00	2021-04-29T13:00:00+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_006	Inactive	Planned	Withdrawal unavailability	2021-05-08T06:01:53+01:00	2021-04-29T13:00:00+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_000000000000000000461_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T13:55:44+01:00	2021-06-01T05:00:00+01:00	2021-06-15T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000461_002	Inactive	Planned	Withdrawal unavailability	2021-06-15T18:14:00+01:00	2021-06-01T05:00:00+01:00	2021-06-15T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:00:20+01:00	2021-10-18T05:00:00+01:00	2021-10-23T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:04:39+00:00	2021-10-16T05:00:00+01:00	2021-10-22T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_003	Dismissed	Planned	Injection unavailability	2021-07-02T15:14:22+01:00	2021-10-16T05:00:00+01:00	2021-10-24T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_004	Dismissed	Planned	Injection unavailability	2021-10-21T13:45:47+01:00	2021-10-16T05:00:00+01:00	2021-10-31T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_005	Dismissed	Planned	Injection unavailability	2021-10-28T10:54:58+01:00	2021-10-16T05:00:00+01:00	2021-11-05T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_006	Dismissed	Planned	Injection unavailability	2021-11-05T09:36:01+00:00	2021-10-16T05:00:00+01:00	2021-11-06T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_007	Dismissed	Planned	Injection unavailability	2021-11-06T07:29:25+00:00	2021-10-16T05:00:00+01:00	2021-11-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_008	Dismissed	Planned	Injection unavailability	2021-11-10T10:43:42+00:00	2021-10-16T05:00:00+01:00	2021-11-15T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_009	Dismissed	Planned	Injection unavailability	2021-11-11T12:55:15+00:00	2021-10-16T05:00:00+01:00	2021-11-17T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_010	Dismissed	Planned	Injection unavailability	2021-11-16T20:46:36+00:00	2021-10-16T05:00:00+01:00	2021-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000462_011	Inactive	Planned	Injection unavailability	2021-11-18T12:24:25+00:00	2021-10-16T05:00:00+01:00	2021-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage. Extended due to valve issues.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:04:49+01:00	2021-10-31T05:00:00+00:00	2021-11-10T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:06:54+00:00	2021-11-01T05:00:00+00:00	2021-11-13T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_003	Dismissed	Planned	Injection unavailability	2021-09-07T10:59:59+01:00	2021-10-31T05:00:00+00:00	2021-11-14T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage + Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000463_004	Inactive	Planned	Injection unavailability	2021-11-12T22:10:06+00:00	2021-10-31T05:00:00+00:00	2021-11-12T22:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage + Commissioning	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_001	Dismissed	Planned	Injection unavailability	2020-07-11T14:10:06+01:00	2021-10-25T05:00:00+01:00	2021-10-30T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_002	Dismissed	Planned	Injection unavailability	2020-11-27T12:05:43+00:00	2021-10-25T05:00:00+01:00	2021-10-31T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_003	Dismissed	Planned	Injection unavailability	2021-09-07T10:55:34+01:00	2021-10-25T05:00:00+01:00	2021-10-29T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_004	Dismissed	Planned	Injection unavailability	2021-10-29T17:05:18+01:00	2021-10-25T05:00:00+01:00	2021-10-30T09:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_005	Dismissed	Planned	Injection unavailability	2021-10-30T08:19:44+01:00	2021-10-25T05:00:00+01:00	2021-10-31T10:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000464_006	Inactive	Planned	Injection unavailability	2021-10-30T17:57:17+01:00	2021-10-25T05:00:00+01:00	2021-10-30T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 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
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_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_000000000000000000466_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T15:43:18+01:00	2022-05-08T05:00:00+01:00	2022-05-20T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000466_002	Dismissed	Planned	Withdrawal unavailability	2021-10-06T22:32:46+01:00	2022-05-08T05:00:00+01:00	2022-05-21T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000466_003	Inactive	Planned	Withdrawal unavailability	2022-05-21T16:28:12+01:00	2022-05-08T05:00:00+01:00	2022-05-21T16:30:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000467_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T15:46:33+01:00	2022-05-20T05:00:00+01:00	2022-06-19T18:00:00+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_000000000000000000467_002	Dismissed	Planned	Withdrawal unavailability	2021-10-06T22:33:43+01:00	2022-06-04T05:00:00+01:00	2022-06-19T18:00:00+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_000000000000000000467_003	Dismissed	Planned	Withdrawal unavailability	2022-05-02T03:13:47+01:00	2022-06-04T05:00:00+01:00	2022-06-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000467_004	Inactive	Planned	Withdrawal unavailability	2022-06-17T19:05:25+01:00	2022-06-04T05:00:00+01:00	2022-06-17T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T15:50:13+01:00	2022-05-06T05:00:00+01:00	2022-05-20T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000468_002	Dismissed	Planned	Withdrawal unavailability	2021-10-06T22:34:05+01:00	2022-05-01T05:00:00+01:00	2022-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 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.