Last update at: 2021-04-15T17:00:00+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
< 3 4 5 6 7 >
Atwick	ATW_000000000000000000296_001	Dismissed	Planned	Withdrawal unavailability	2018-10-21T15:25:05+01:00	2019-06-30T05:00:00+01:00	2019-07-13T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000297_004	Dismissed	Planned	Injection unavailability	2019-06-13T15:58:07+01:00	2019-07-13T05:00:00+01:00	2019-07-22T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000297_003	Dismissed	Planned	Injection unavailability	2019-02-22T12:31:02+00:00	2019-07-13T05:00:00+01:00	2019-07-22T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000297_002	Dismissed	Planned	Injection unavailability	2019-02-06T16:01:44+00:00	2019-07-14T05:00:00+01:00	2019-07-22T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000297_001	Dismissed	Planned	Injection unavailability	2018-10-21T15:29:13+01:00	2019-06-30T05:00:00+01:00	2019-07-08T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000343_001	Inactive	Unplanned	Withdrawal unavailability	2019-06-11T13:32:52+01:00	2019-06-11T12:00:00+01:00	2019-06-11T13:10:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000342_001	Inactive	Unplanned	Withdrawal unavailability	2019-06-04T17:02:57+01:00	2019-06-04T14:50:00+01:00	2019-06-04T16:40:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000329_003	Dismissed	Planned	Injection unavailability	2019-05-19T02:18:26+01:00	2019-05-06T05:00:00+01:00	2019-05-19T02:15:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000329_002	Dismissed	Planned	Injection unavailability	2019-05-18T12:30:33+01:00	2019-05-06T05:00:00+01:00	2019-05-19T05:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000329_001	Dismissed	Planned	Injection unavailability	2019-03-04T12:29:07+00:00	2019-05-06T05:00:00+01:00	2019-05-18T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000330_003	Dismissed	Planned	Withdrawal unavailability	2019-05-19T02:17:50+01:00	2019-05-06T05:00:00+01:00	2019-05-19T02:15:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000330_002	Dismissed	Planned	Withdrawal unavailability	2019-05-18T12:33:27+01:00	2019-05-06T05:00:00+01:00	2019-05-19T05:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000330_001	Dismissed	Planned	Withdrawal unavailability	2019-03-04T12:30:49+00:00	2019-05-06T05:00:00+01:00	2019-05-18T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000338_002	Inactive	Planned	Withdrawal unavailability	2019-04-08T11:57:51+01:00	2019-04-08T10:00:00+01:00	2019-04-08T11:57:00+01:00	GWh/d	100	0	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000338_001	Dismissed	Planned	Withdrawal unavailability	2019-04-08T09:41:03+01:00	2019-04-08T10:00:00+01:00	2019-04-08T13:00:00+01:00	GWh/d	100	0	130	Planned Outage	Planned outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000328_002	Dismissed	Unplanned	Injection unavailability	2019-03-02T03:18:14+00:00	2019-03-02T02:03:00+00:00	2019-03-02T04:15:00+00:00	GWh/d	0	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000328_001	Dismissed	Unplanned	Injection unavailability	2019-03-02T02:42:04+00:00	2019-03-02T02:03:00+00:00	2019-03-02T03:30:00+00:00	GWh/d	0	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000327_002	Dismissed	Unplanned	Withdrawal unavailability	2019-03-02T03:18:40+00:00	2019-03-02T02:03:00+00:00	2019-03-02T04:15:00+00:00	GWh/d	0	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000327_001	Dismissed	Unplanned	Withdrawal unavailability	2019-03-02T02:40:14+00:00	2019-03-02T02:03:00+00:00	2019-03-02T03:30:00+00:00	GWh/d	0	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000325_002	Inactive	Planned	Withdrawal unavailability	2019-02-27T12:25:59+00:00	2019-02-27T10:00:00+00:00	2019-02-27T12:30:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Full site outage for fire and gas system upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000325_001	Dismissed	Planned	Withdrawal unavailability	2019-02-22T10:00:14+00:00	2019-02-27T10:00:00+00:00	2019-02-27T14:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Full site outage for fire and gas system upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000324_003	Inactive	Planned	Injection unavailability	2019-02-27T12:25:30+00:00	2019-02-27T10:00:00+00:00	2019-02-27T12:30:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site outage for fire and gas detection system upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000324_002	Dismissed	Planned	Injection unavailability	2019-02-22T09:57:48+00:00	2019-02-27T10:00:00+00:00	2019-02-27T14:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site outage for fire and gas detection system upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000324_001	Dismissed	Planned	Storage unavailability	2019-02-22T09:39:58+00:00	2019-02-27T10:00:00+00:00	2019-02-27T14:00:00+00:00	TWh	2.3084208	0	2.3084208	Planned Outage	Full Site outage for fire and gas detection system upgrade	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000326_001	Dismissed	Unplanned	Withdrawal unavailability	2019-02-24T03:39:18+00:00	2019-02-24T03:37:00+00:00	2019-02-25T16:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000323_002	Inactive	Planned	Withdrawal unavailability	2019-02-22T08:31:13+00:00	2019-02-22T07:11:00+00:00	2019-02-22T08:29:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000323_001	Dismissed	Planned	Withdrawal unavailability	2019-02-22T07:12:44+00:00	2019-02-22T07:11:00+00:00	2019-02-22T12:00:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000322_002	Inactive	Unplanned	Injection unavailability	2019-02-22T08:30:32+00:00	2019-02-22T07:11:00+00:00	2019-02-22T08:29:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000322_001	Dismissed	Unplanned	Injection unavailability	2019-02-22T07:11:39+00:00	2019-02-22T07:11:00+00:00	2019-02-22T12:00:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000318_001	Inactive	Unplanned	Withdrawal unavailability	2019-01-27T19:53:32+00:00	2019-01-27T16:30:00+00:00	2019-01-27T19:08:00+00:00	GWh/d	130	0	130	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000317_001	Inactive	Unplanned	Injection unavailability	2019-01-27T19:52:37+00:00	2019-01-27T16:30:00+00:00	2019-01-27T19:08:00+00:00	GWh/d	30	0	30	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000316_002	Inactive	Unplanned	Storage unavailability	2019-01-27T19:08:42+00:00	2019-01-27T16:30:00+00:00	2019-01-27T19:08:00+00:00	TWh	2.631064	0	2.631064	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000316_001	Dismissed	Unplanned	Storage unavailability	2019-01-27T17:05:01+00:00	2019-01-27T16:30:00+00:00	2019-01-27T20:00:00+00:00	TWh	2.631064	0	2.631064	Failure	unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000311_002	Dismissed	Planned	Withdrawal unavailability	2019-01-03T17:44:09+00:00	2019-01-04T09:00:00+00:00	2019-01-04T13:00:00+00:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000311_001	Dismissed	Planned	Withdrawal unavailability	2018-12-14T11:57:10+00:00	2019-01-04T09:00:00+00:00	2019-01-04T13:00:00+00:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000310_002	Dismissed	Planned	Injection unavailability	2019-01-03T17:43:35+00:00	2019-01-04T09:00:00+00:00	2019-01-04T13:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000310_001	Dismissed	Planned	Injection unavailability	2018-12-14T11:54:59+00:00	2019-01-04T09:00:00+00:00	2019-01-04T13:00:00+00:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000306_003	Inactive	Unplanned	Withdrawal unavailability	2018-11-30T15:27:06+00:00	2018-11-29T11:30:00+00:00	2018-11-30T15:25:00+00:00	GWh/d	130	0	130	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000306_002	Dismissed	Unplanned	Withdrawal unavailability	2018-11-29T15:52:42+00:00	2018-11-29T11:30:00+00:00	2018-11-30T16:00:00+00:00	GWh/d	130	0	130	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000306_001	Dismissed	Unplanned	Withdrawal unavailability	2018-11-29T12:20:40+00:00	2018-11-29T11:30:00+00:00	2018-11-29T16:00:00+00:00	GWh/d	130	0	130	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000307_003	Inactive	Unplanned	Injection unavailability	2018-11-30T15:26:23+00:00	2018-11-29T11:30:00+00:00	2018-11-30T15:25:00+00:00	GWh/d	30	0	30	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000307_002	Dismissed	Unplanned	Injection unavailability	2018-11-29T15:52:16+00:00	2018-11-29T11:30:00+00:00	2018-11-30T16:00:00+00:00	GWh/d	30	0	30	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000307_001	Dismissed	Unplanned	Injection unavailability	2018-11-29T12:21:36+00:00	2018-11-29T11:30:00+00:00	2018-11-29T16:00:00+00:00	GWh/d	30	0	30	Failure	Unplanned	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000304_003	Inactive	Unplanned	Withdrawal unavailability	2018-11-27T02:58:41+00:00	2018-11-26T23:27:00+00:00	2018-11-27T02:58:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000304_002	Dismissed	Unplanned	Withdrawal unavailability	2018-11-27T01:50:37+00:00	2018-11-26T23:27:00+00:00	2018-11-27T05:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000304_001	Dismissed	Unplanned	Withdrawal unavailability	2018-11-26T23:30:12+00:00	2018-11-26T23:27:00+00:00	2018-11-27T02:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000294_002	Inactive	Planned	Withdrawal unavailability	2018-10-25T15:50:12+01:00	2018-10-25T08:00:00+01:00	2018-10-25T15:45:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000294_001	Dismissed	Planned	Withdrawal unavailability	2018-10-19T14:30:56+01:00	2018-10-25T08:00:00+01:00	2018-10-25T16:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000295_002	Inactive	Planned	Injection unavailability	2018-10-25T15:49:27+01:00	2018-10-25T08:00:00+01:00	2018-10-25T15:45:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000295_001	Dismissed	Planned	Injection unavailability	2018-10-19T14:34:54+01:00	2018-10-25T08:00:00+01:00	2018-10-25T16:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	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.