Last update at: 2017-08-11T05:00:00+01:00

**Please note that the last update time shown is rounded to the next market interval of 30 minutes

All times are in UTC.

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_000000000000000000188_001	Dismissed	Unplanned	Withdrawal unavailability	2017-07-14T15:22:04+01:00	2017-07-15T08:00:00+01:00	2017-07-15T18:00:00+01:00	GWh/d	67.04	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000179_005	Inactive	Unplanned	Withdrawal unavailability	2017-06-24T12:37:30+01:00	2017-06-23T11:12:00+01:00	2017-06-24T12:28:00+01:00	GWh/d	342	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000179_004	Dismissed	Unplanned	Withdrawal unavailability	2017-06-24T11:56:20+01:00	2017-06-23T11:12:00+01:00	2017-06-24T14:00:00+01:00	GWh/d	342	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000179_003	Dismissed	Unplanned	Withdrawal unavailability	2017-06-23T15:42:47+01:00	2017-06-23T11:12:00+01:00	2017-06-24T16:00:00+01:00	GWh/d	342	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000179_002	Dismissed	Unplanned	Withdrawal unavailability	2017-06-23T13:15:49+01:00	2017-06-23T11:12:00+01:00	2017-06-23T16:00:00+01:00	GWh/d	342	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000179_001	Dismissed	Unplanned	Withdrawal unavailability	2017-06-23T11:24:50+01:00	2017-06-23T11:12:00+01:00	2017-06-23T13:30:00+01:00	GWh/d	342	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000178_002	Dismissed	Unplanned	Withdrawal unavailability	2017-06-20T11:10:21+01:00	2017-06-20T10:50:00+01:00	2017-06-20T18:00:00+01:00	GWh/d	121.5	220.5	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000178_001	Dismissed	Unplanned	Withdrawal unavailability	2017-06-20T11:01:56+01:00	2017-06-20T10:50:00+01:00	2017-06-20T18:00:00+01:00	GWh/d	121.5	220.5	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000174_001	Dismissed	Unplanned	Withdrawal unavailability	2017-06-08T15:44:07+01:00	2017-06-11T10:00:00+01:00	2017-06-13T18:00:00+01:00	GWh/d	342	0	342	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000170_002	Inactive	Unplanned	Withdrawal unavailability	2017-05-30T21:56:13+01:00	2017-05-30T20:44:00+01:00	2017-05-30T21:51:00+01:00	GWh/d	220.8	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000170_001	Dismissed	Unplanned	Withdrawal unavailability	2017-05-30T21:19:11+01:00	2017-05-30T20:44:00+01:00	2017-05-30T23:00:00+01:00	GWh/d	220.8	0	342	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000171_002	Inactive	Unplanned	Injection unavailability	2017-05-30T21:55:40+01:00	2017-05-30T20:44:00+01:00	2017-05-30T21:51:00+01:00	GWh/d	200.54	0	311	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000171_001	Dismissed	Unplanned	Injection unavailability	2017-05-30T21:21:05+01:00	2017-05-30T20:44:00+01:00	2017-05-30T23:00:00+01:00	GWh/d	200.54	0	311	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000168_002	Inactive	Unplanned	Injection unavailability	2017-05-14T20:24:04+01:00	2017-05-15T05:00:00+01:00	2017-05-15T18:00:00+01:00	GWh/d	111	200	311	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000168_001	Dismissed	Unplanned	Injection unavailability	2017-05-12T09:04:53+01:00	2017-05-15T05:00:00+01:00	2017-05-15T18:00:00+01:00	GWh/d	111	200	311	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000164_002	Inactive	Unplanned	Injection unavailability	2017-05-04T09:58:08+01:00	2017-05-04T04:48:00+01:00	2017-05-04T09:47:00+01:00	GWh/d	111	200	311	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000164_001	Dismissed	Unplanned	Injection unavailability	2017-05-04T04:49:56+01:00	2017-05-04T04:48:00+01:00	2017-05-04T10:00:00+01:00	GWh/d	111	200	311	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000119_001	Dismissed	Unplanned	Withdrawal unavailability	2017-01-30T09:37:22+00:00	2017-01-30T08:51:00+00:00	2017-01-31T16:00:00+00:00	GWh/d	32.4	62.4	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000116_002	Dismissed	Unplanned	Storage unavailability	2017-01-27T07:19:53+00:00	2017-01-27T06:00:00+00:00	2017-01-30T18:00:00+00:00	TWh	0.288	2.363972284	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000116_001	Dismissed	Unplanned	Storage unavailability	2017-01-27T06:57:52+00:00	2017-01-27T06:00:00+00:00	2017-01-30T18:00:00+00:00	TWh	0.288	2.363972284	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000100_002	Inactive	Unplanned	Storage unavailability	2017-01-09T17:57:43+00:00	2017-01-09T09:00:00+00:00	2017-01-09T17:57:00+00:00	TWh	0.584426657	2.067545627	2.651972284	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000100_001	Dismissed	Unplanned	Storage unavailability	2017-01-09T12:37:59+00:00	2017-01-09T09:00:00+00:00	2017-01-09T18:00:00+00:00	TWh	0.584426657	2.067545627	2.651972284	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000065_001	Dismissed	Unplanned	Withdrawal unavailability	2016-09-30T08:36:46+01:00	2016-09-30T08:31:00+01:00	2016-09-30T12:00:00+01:00	GWh/d	342	0	342	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000066_001	Dismissed	Unplanned	Injection unavailability	2016-09-30T08:38:11+01:00	2016-09-30T08:31:00+01:00	2016-09-30T12:00:00+01:00	GWh/d	311	0	311	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000040_003	Inactive	Unplanned	Withdrawal unavailability	2016-08-19T14:57:36+01:00	2016-08-18T18:00:00+01:00	2016-08-19T14:49:00+01:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000040_002	Dismissed	Unplanned	Withdrawal unavailability	2016-08-18T17:47:33+01:00	2016-08-18T18:00:00+01:00	2016-08-19T18:00:00+01:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000040_001	Dismissed	Unplanned	Withdrawal unavailability	2016-08-18T17:47:15+01:00	2016-08-18T18:00:00+01:00	2016-08-19T18:00:00+01:00	GWh/d	0	130	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000030_002	Inactive	Unplanned	Storage unavailability	2016-08-17T19:02:31+01:00	2016-08-15T22:40:00+01:00	2016-08-17T18:00:00+01:00	TWh	0.210833321	2.441138963	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000030_001	Dismissed	Unplanned	Storage unavailability	2016-08-15T23:31:31+01:00	2016-08-15T22:40:00+01:00	2016-08-17T18:00:00+01:00	TWh	0.210833321	2.441138963	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000024_002	Inactive	Unplanned	Storage unavailability	2016-08-14T12:49:11+01:00	2016-08-13T12:00:00+01:00	2016-08-15T12:00:00+01:00	TWh	0.29	2.36	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000024_001	Dismissed	Unplanned	Storage unavailability	2016-08-12T09:30:06+01:00	2016-08-13T12:00:00+01:00	2016-08-15T12:00:00+01:00	TWh	0.288796415	2.363175869	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000023_002	Inactive	Unplanned	Storage unavailability	2016-08-13T13:02:31+01:00	2016-08-12T09:00:00+01:00	2016-08-13T12:00:00+01:00	TWh	0.49963	2.152342284	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000023_001	Dismissed	Unplanned	Storage unavailability	2016-08-12T09:26:57+01:00	2016-08-12T09:00:00+01:00	2016-08-13T12:00:00+01:00	TWh	0.49963	2.152342284	2.651972284	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000118_004	Dismissed	Unplanned	Withdrawal unavailability	2017-01-30T09:49:57+00:00	2017-01-29T19:00:00+00:00	2017-02-03T16:00:00+00:00	GWh/d	35.2	94.8	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000118_003	Dismissed	Unplanned	Withdrawal unavailability	2017-01-30T09:38:11+00:00	2017-01-29T19:00:00+00:00	2017-02-03T16:00:00+00:00	GWh/d	35.2	62.4	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000118_002	Dismissed	Unplanned	Withdrawal unavailability	2017-01-30T00:31:43+00:00	2017-01-29T19:00:00+00:00	2017-01-30T12:00:00+00:00	GWh/d	25	105	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000118_001	Dismissed	Unplanned	Withdrawal unavailability	2017-01-29T17:58:24+00:00	2017-01-29T19:00:00+00:00	2017-01-30T12:00:00+00:00	GWh/d	36.4	93.6	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000117_004	Inactive	Unplanned	Withdrawal unavailability	2017-01-29T19:02:08+00:00	2017-01-28T10:15:00+00:00	2017-01-29T19:00:00+00:00	GWh/d	80	50	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000117_003	Dismissed	Unplanned	Withdrawal unavailability	2017-01-29T17:50:35+00:00	2017-01-28T10:15:00+00:00	2017-01-29T19:00:00+00:00	GWh/d	80	50	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000117_002	Dismissed	Unplanned	Withdrawal unavailability	2017-01-29T08:52:01+00:00	2017-01-28T10:15:00+00:00	2017-01-29T18:00:00+00:00	GWh/d	80	50	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000117_001	Dismissed	Unplanned	Withdrawal unavailability	2017-01-28T10:50:15+00:00	2017-01-28T10:15:00+00:00	2017-01-29T12:00:00+00:00	GWh/d	80	50	130	Failure	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000181_003	Inactive	Unplanned	Injection unavailability	2017-07-06T09:54:54+01:00	2017-07-04T10:00:00+01:00	2017-07-06T09:45:00+01:00	GWh/d	200.56	0	311	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000181_002	Dismissed	Unplanned	Injection unavailability	2017-06-28T18:28:48+01:00	2017-07-04T10:00:00+01:00	2017-07-06T18:00:00+01:00	GWh/d	200.56	0	311	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000180_005	Inactive	Unplanned	Injection unavailability	2017-06-24T12:37:14+01:00	2017-06-23T11:12:00+01:00	2017-06-24T12:28:00+01:00	GWh/d	201	0	311	Failure	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000180_004	Dismissed	Unplanned	Injection unavailability	2017-06-24T11:56:52+01:00	2017-06-23T11:12:00+01:00	2017-06-24T14:00:00+01:00	GWh/d	201	0	311	Failure	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000180_003	Dismissed	Unplanned	Injection unavailability	2017-06-23T15:42:21+01:00	2017-06-23T11:12:00+01:00	2017-06-24T16:00:00+01:00	GWh/d	201	0	311	Failure	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000180_002	Dismissed	Unplanned	Injection unavailability	2017-06-23T13:15:33+01:00	2017-06-23T11:12:00+01:00	2017-06-23T16:00:00+01:00	GWh/d	201	0	311	Failure	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000180_001	Dismissed	Unplanned	Injection unavailability	2017-06-23T11:28:02+01:00	2017-06-23T11:12:00+01:00	2017-06-23T13:30:00+01:00	GWh/d	201	0	311	Failure	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000133_001	Dismissed	Planned	Withdrawal unavailability	2017-03-17T16:53:51+00:00	2017-05-07T05:00:00+01:00	2017-05-15T05:00:00+01:00	GWh/d	342	0	342	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000025_002	Inactive	Unplanned	Withdrawal unavailability	2016-08-14T15:02:31+01:00	2016-08-14T08:00:00+01:00	2016-08-14T14:00:00+01:00	GWh/d	130	0	130	Planned Outage	Full site 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.