Last update at: 2023-05-30T16:00:00+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 >
Atwick	ATW_000000000000000000319_006	Dismissed	Unplanned	Withdrawal unavailability	2019-10-02T15:18:39+01:00	2019-01-31T12:11:00+00:00	2020-06-30T18:00:00+01:00	GWh/d	30	100	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000319_007	Dismissed	Unplanned	Withdrawal unavailability	2019-11-12T16:33:42+00:00	2019-01-31T12:11:00+00:00	2020-06-30T18:00:00+01:00	GWh/d	30	100	130	Failure	this capacity will be available for limited durations but may not always be responsive to price signals	21YGB-UKGASGRIDW	55WATWICK-SSE00J	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_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_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_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_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
Atwick	ATW_000000000000000000319_008	Dismissed	Unplanned	Withdrawal unavailability	2020-02-17T12:58:51+00:00	2019-01-31T12:11:00+00:00	2020-06-12T05:00:00+01:00	GWh/d	30	100	130	Failure	this capacity will be available for limited durations but may not always be responsive to price signals	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000435_001	Dismissed	Planned	Injection unavailability	2020-02-17T13:03:09+00:00	2020-06-12T05:00:00+01:00	2020-06-25T18:00:00+01:00	GWh/d	30	0	30	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000436_001	Dismissed	Planned	Withdrawal unavailability	2020-02-17T13:05:54+00:00	2020-06-12T05:00:00+01:00	2020-06-25T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000437_001	Dismissed	Planned	Withdrawal unavailability	2020-02-17T13:09:34+00:00	2020-06-25T18:00:00+01:00	2020-07-12T18:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	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_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_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_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
Atwick	ATW_000000000000000000319_009	Dismissed	Unplanned	Withdrawal unavailability	2020-04-07T10:21:40+01:00	2019-01-31T12:11:00+00:00	2020-09-21T06:00:00+01:00	GWh/d	30	100	130	Failure	this capacity will be available for limited durations but may not always be responsive to price signals	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000436_002	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:24:48+01:00	2020-09-21T06:00:00+01:00	2020-10-04T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000435_002	Dismissed	Planned	Injection unavailability	2020-04-07T10:25:35+01:00	2020-09-21T06:00:00+01:00	2020-10-04T18:00:00+01:00	GWh/d	30	0	30	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000437_002	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:31:39+01:00	2020-10-04T18:00:00+01:00	2020-10-23T18:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000440_001	Dismissed	Planned	Withdrawal unavailability	2020-04-07T10:34:54+01:00	2020-06-14T06:00:00+01:00	2020-06-20T18:00:00+01:00	GWh/d	30	70	130	Planned Outage	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000445_001	Dismissed	Planned	Withdrawal unavailability	2020-05-13T10:33:15+01:00	2020-06-01T09:00:00+01:00	2020-06-02T12:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000446_001	Dismissed	Planned	Injection unavailability	2020-05-13T10:34:27+01:00	2020-06-02T09:00:00+01:00	2020-06-02T12:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000447_001	Dismissed	Planned	Withdrawal unavailability	2020-05-13T10:35:06+01:00	2020-06-02T09:00:00+01:00	2020-06-02T12:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000448_001	Dismissed	Planned	Injection unavailability	2020-05-13T10:36:55+01:00	2020-06-04T09:00:00+01:00	2020-06-04T12:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000449_001	Dismissed	Planned	Withdrawal unavailability	2020-05-13T10:37:45+01:00	2020-06-04T09:00:00+01:00	2020-06-04T12:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000447_002	Inactive	Planned	Withdrawal unavailability	2020-06-02T11:29:33+01:00	2020-06-02T09:00:00+01:00	2020-06-02T11:30:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000446_002	Inactive	Planned	Injection unavailability	2020-06-02T11:32:00+01:00	2020-06-02T09:00:00+01:00	2020-06-02T11:30:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000449_002	Inactive	Planned	Withdrawal unavailability	2020-06-04T11:43:43+01:00	2020-06-04T09:00:00+01:00	2020-06-04T11:45:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000448_002	Inactive	Planned	Injection unavailability	2020-06-04T11:44:07+01:00	2020-06-04T09:00:00+01:00	2020-06-04T11:45:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000450_001	Dismissed	Unplanned	Storage unavailability	2020-06-05T10:14:21+01:00	2020-06-08T05:00:00+01:00	2020-06-20T18:00:00+01:00	TWh	0.73541	2.4077041	3.1431141	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	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_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_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_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
Atwick	ATW_000000000000000000454_001	Dismissed	Planned	Withdrawal unavailability	2020-06-17T11:01:06+01:00	2020-06-23T06:00:00+01:00	2020-06-25T18:00:00+01:00	GWh/d	75	55	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000450_002	Inactive	Unplanned	Storage unavailability	2020-06-18T14:35:34+01:00	2020-06-08T05:00:00+01:00	2020-06-18T14:35:00+01:00	TWh	0.73541	2.4077041	3.1431141	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000440_002	Inactive	Planned	Withdrawal unavailability	2020-06-19T14:30:09+01:00	2020-06-14T06:00:00+01:00	2020-06-19T14:30:00+01:00	GWh/d	30	70	130	Planned Outage	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000455_001	Dismissed	Unplanned	Injection unavailability	2020-06-21T17:57:23+01:00	2020-06-21T17:32:00+01:00	2020-06-21T19:00:00+01:00	GWh/d	30	0	30	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000455_002	Inactive	Unplanned	Injection unavailability	2020-06-21T18:57:36+01:00	2020-06-21T17:32:00+01:00	2020-06-21T18:57:00+01:00	GWh/d	30	0	30	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000456_001	Dismissed	Unplanned	Withdrawal unavailability	2020-06-24T02:15:23+01:00	2020-06-24T02:15:00+01:00	2020-06-24T18:00:00+01:00	GWh/d	130	0	130	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000456_002	Dismissed	Unplanned	Withdrawal unavailability	2020-06-24T15:41:26+01:00	2020-06-24T02:15:00+01:00	2020-06-24T15:38:00+01:00	GWh/d	130	0	130	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000454_002	Dismissed	Planned	Withdrawal unavailability	2020-06-25T11:36:50+01:00	2020-06-23T06:00:00+01:00	2020-06-25T11:36:00+01:00	GWh/d	75	55	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	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_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_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

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.