Last update at: 2024-04-19T16:30:00+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
< 2 3 4 5 6 >
Aldbrough	ALD_000000000000000000822_004	Dismissed	Planned	Injection unavailability	2023-10-29T11:08:05+00:00	2023-10-28T05:00:00+01:00	2023-10-29T14:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_003	Dismissed	Planned	Injection unavailability	2023-10-28T20:37:08+01:00	2023-10-28T05:00:00+01:00	2023-10-29T12:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_002	Dismissed	Planned	Injection unavailability	2023-10-28T17:54:42+01:00	2023-10-28T05:00:00+01:00	2023-10-28T22:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000822_001	Dismissed	Planned	Injection unavailability	2023-10-18T14:11:06+01:00	2023-10-28T05:00:00+01:00	2023-10-28T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Siemens electrical maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000478_002	Inactive	Planned	Injection unavailability	2023-10-27T23:16:53+01:00	2023-10-23T05:00:00+01:00	2023-10-27T23:00:00+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_000000000000000000478_001	Dismissed	Planned	Injection unavailability	2020-07-11T16:22:41+01:00	2023-10-23T05:00:00+01:00	2023-10-28T05:00:00+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_000000000000000000477_003	Inactive	Planned	Injection unavailability	2023-10-21T06:02:31+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_002	Dismissed	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
Aldbrough	ALD_000000000000000000816_003	Inactive	Planned	Withdrawal unavailability	2023-10-06T09:02:31+01:00	2023-10-03T17:00:00+01:00	2023-10-06T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000816_002	Dismissed	Planned	Withdrawal unavailability	2023-10-04T11:03:34+01:00	2023-10-03T17:00:00+01:00	2023-10-06T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000816_001	Dismissed	Planned	Withdrawal unavailability	2023-10-03T16:35:43+01:00	2023-10-03T17:00:00+01:00	2023-10-05T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000811_002	Inactive	Unplanned	Injection unavailability	2023-09-20T15:38:25+01:00	2023-09-20T08:06:00+01:00	2023-09-20T15:38:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000811_001	Dismissed	Unplanned	Injection unavailability	2023-09-20T08:14:14+01:00	2023-09-20T08:06:00+01:00	2023-09-20T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000799_002	Inactive	Planned	Storage unavailability	2023-09-17T20:02:32+01:00	2023-09-14T05:00:00+01:00	2023-09-17T19:00:00+01:00	TWh	0.3518	2.8103642	3.1621642	Planned Outage	ALD 5 Wellhead Maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000799_001	Dismissed	Planned	Storage unavailability	2023-08-30T15:54:37+01:00	2023-09-14T05:00:00+01:00	2023-09-17T19:00:00+01:00	TWh	0.3518	2.8103642	3.1621642	Planned Outage	ALD 5 Wellhead Maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_003	Inactive	Unplanned	Withdrawal unavailability	2023-09-17T16:32:32+01:00	2023-09-09T11:55:00+01:00	2023-09-17T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_002	Dismissed	Unplanned	Withdrawal unavailability	2023-09-17T15:17:46+01:00	2023-09-09T11:55:00+01:00	2023-09-17T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_001	Dismissed	Unplanned	Withdrawal unavailability	2023-09-09T11:53:44+01:00	2023-09-09T11:55:00+01:00	2023-10-15T17:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000809_002	Inactive	Unplanned	Storage unavailability	2023-09-14T19:02:32+01:00	2023-09-14T10:00:00+01:00	2023-09-14T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 3 WHM + RTS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000809_001	Dismissed	Unplanned	Storage unavailability	2023-09-14T09:01:11+01:00	2023-09-14T10:00:00+01:00	2023-09-14T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 3 WHM + RTS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_005	Inactive	Planned	Storage unavailability	2023-09-14T06:02:32+01:00	2023-09-12T06:00:00+01:00	2023-09-14T05:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_004	Dismissed	Planned	Storage unavailability	2023-09-13T09:51:24+01:00	2023-09-12T06:00:00+01:00	2023-09-14T05:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_003	Dismissed	Planned	Storage unavailability	2023-08-30T15:28:22+01:00	2023-09-12T06:00:00+01:00	2023-09-22T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_002	Dismissed	Planned	Storage unavailability	2023-08-23T09:12:19+01:00	2023-09-10T06:00:00+01:00	2023-09-22T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_001	Dismissed	Planned	Storage unavailability	2023-07-05T15:27:29+01:00	2023-09-12T06:00:00+01:00	2023-09-24T18:00:00+01:00	TWh	0.412	2.8872861	3.2992861	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_003	Inactive	Unplanned	Withdrawal unavailability	2023-09-09T11:43:54+01:00	2023-09-08T19:20:00+01:00	2023-09-09T11:45:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_002	Dismissed	Unplanned	Withdrawal unavailability	2023-09-08T22:03:47+01:00	2023-09-08T19:20:00+01:00	2023-09-09T17:00:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_001	Dismissed	Unplanned	Withdrawal unavailability	2023-09-08T20:18:24+01:00	2023-09-08T19:20:00+01:00	2023-09-09T05:00:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_003	Inactive	Unplanned	Injection unavailability	2023-09-09T11:43:38+01:00	2023-09-08T19:20:00+01:00	2023-09-09T11:45:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_002	Dismissed	Unplanned	Injection unavailability	2023-09-08T22:03:00+01:00	2023-09-08T19:20:00+01:00	2023-09-09T17:00:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_001	Dismissed	Unplanned	Injection unavailability	2023-09-08T20:17:03+01:00	2023-09-08T19:20:00+01:00	2023-09-09T05:00:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000797_002	Inactive	Unplanned	Injection unavailability	2023-08-27T23:02:32+01:00	2023-08-27T16:56:00+01:00	2023-08-27T22:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Motor Purge Fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000797_001	Dismissed	Unplanned	Injection unavailability	2023-08-27T16:57:56+01:00	2023-08-27T16:56:00+01:00	2023-08-27T22:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Motor Purge Fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000793_002	Inactive	Unplanned	Storage unavailability	2023-08-17T05:34:39+01:00	2023-08-16T20:57:00+01:00	2023-08-17T05:00:00+01:00	TWh	0.824	2.3381642	3.1621642	Failure	Ald 1 & 9	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000793_001	Dismissed	Unplanned	Storage unavailability	2023-08-16T20:58:10+01:00	2023-08-16T20:57:00+01:00	2023-08-17T05:00:00+01:00	TWh	0.824	2.3381642	3.1621642	Failure	Ald 1 & 9	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000792_002	Inactive	Unplanned	Injection unavailability	2023-08-15T16:16:14+01:00	2023-08-15T12:10:00+01:00	2023-08-15T16:10:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000792_001	Dismissed	Unplanned	Injection unavailability	2023-08-15T12:12:07+01:00	2023-08-15T12:10:00+01:00	2023-08-15T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000779_002	Inactive	Unplanned	Injection unavailability	2023-07-07T15:13:37+01:00	2023-07-07T10:00:00+01:00	2023-07-07T15:10:00+01:00	GWh/d	111.02	200.54	311.56	Failure	GC-2 VSDS fault investigation.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000779_001	Dismissed	Unplanned	Injection unavailability	2023-07-07T10:19:03+01:00	2023-07-07T10:00:00+01:00	2023-07-07T16:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	GC-2 VSDS fault investigation.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000777_003	Inactive	Unplanned	Injection unavailability	2023-07-06T12:52:30+01:00	2023-07-06T02:25:00+01:00	2023-07-06T12:50:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000777_002	Dismissed	Unplanned	Injection unavailability	2023-07-06T09:41:25+01:00	2023-07-06T02:25:00+01:00	2023-07-06T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000777_001	Dismissed	Unplanned	Injection unavailability	2023-07-06T02:35:18+01:00	2023-07-06T02:25:00+01:00	2023-07-06T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000778_002	Inactive	Unplanned	Storage unavailability	2023-07-06T09:09:19+01:00	2023-07-06T02:25:00+01:00	2023-07-06T09:09:00+01:00	TWh	0.8395	2.4597861	3.2992861	Failure	Ald 7 Panel inaccessible	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000778_001	Dismissed	Unplanned	Storage unavailability	2023-07-06T02:40:52+01:00	2023-07-06T02:25:00+01:00	2023-07-06T12:00:00+01:00	TWh	0.8395	2.4597861	3.2992861	Failure	Ald 7 Panel inaccessible	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000776_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:31:09+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000776_001	Dismissed	Unplanned	Injection unavailability	2023-07-05T23:27:00+01:00	2023-07-05T23:01:00+01:00	2023-07-06T03:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000775_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:30:20+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000775_001	Dismissed	Unplanned	Injection unavailability	2023-07-05T23:24:21+01:00	2023-07-05T23:01:00+01:00	2023-07-06T03:00:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000774_002	Inactive	Unplanned	Withdrawal unavailability	2023-07-06T02:29:53+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	342.3	0	342.3	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.