Last update at: 2024-05-07T09:00:00+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
< 6 7 8 9 10 >
Atwick	ATW_000000000000000000490_004	Dismissed	Planned	Withdrawal unavailability	2022-06-27T09:41:40+01:00	2022-07-01T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_003	Dismissed	Planned	Withdrawal unavailability	2022-02-17T10:37:49+00:00	2022-07-01T05:00:00+01:00	2022-07-25T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:39:15+01:00	2022-07-01T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T21:47:54+01:00	2022-07-01T05:00:00+01:00	2022-07-08T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000681_004	Inactive	Unplanned	Storage unavailability	2022-08-02T22:02:33+01:00	2022-08-01T19:34:00+01:00	2022-08-02T21:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000681_003	Dismissed	Unplanned	Storage unavailability	2022-08-02T17:07:13+01:00	2022-08-01T19:34:00+01:00	2022-08-02T21:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000681_002	Dismissed	Unplanned	Storage unavailability	2022-08-01T19:36:14+01:00	2022-08-01T19:34:00+01:00	2022-08-02T18:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000681_001	Dismissed	Unplanned	Storage unavailability	2022-08-01T19:33:01+01:00	2022-08-01T19:40:00+01:00	2022-08-02T18:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000640_003	Inactive	Unplanned	Withdrawal unavailability	2022-08-01T06:02:33+01:00	2022-01-22T05:00:00+00:00	2022-08-01T05:00:00+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_000000000000000000640_002	Dismissed	Unplanned	Withdrawal unavailability	2022-01-28T11:28:46+00:00	2022-01-22T05:00:00+00:00	2022-08-01T05:00:00+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_000000000000000000640_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-21T11:27:54+00:00	2022-01-22T05:00:00+00:00	2022-01-29T05:00:00+00:00	GWh/d	30	100	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_004	Dismissed	Planned	Withdrawal unavailability	2022-07-26T12:00:05+01:00	2022-08-02T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_003	Dismissed	Planned	Withdrawal unavailability	2022-07-22T14:29:19+01:00	2022-08-02T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_002	Dismissed	Planned	Withdrawal unavailability	2022-07-07T10:48:53+01:00	2022-08-02T18:00:00+01:00	2022-09-06T18:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000650_001	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:38:22+00:00	2022-09-10T05:00:00+01:00	2022-09-29T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_004	Inactive	Planned	Injection unavailability	2022-07-19T18:02:28+01:00	2022-07-01T05:00:00+01:00	2022-07-19T17:58:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_003	Dismissed	Planned	Injection unavailability	2022-06-27T09:19:11+01:00	2022-07-01T05:00:00+01:00	2022-07-19T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_002	Dismissed	Planned	Injection unavailability	2022-02-17T10:59:54+00:00	2022-07-01T05:00:00+01:00	2022-07-25T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000489_001	Dismissed	Planned	Injection unavailability	2020-07-11T21:45:24+01:00	2022-07-01T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000649_003	Inactive	Planned	Withdrawal unavailability	2022-07-01T06:02:32+01:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000649_002	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:38:54+00:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000649_001	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:28:04+00:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	47	83	130	Planned Outage	Stream 7 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_003	Dismissed	Planned	Withdrawal unavailability	2022-06-27T09:31:40+01:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_002	Dismissed	Planned	Withdrawal unavailability	2022-03-18T09:15:10+00:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000659_001	Dismissed	Planned	Withdrawal unavailability	2022-03-18T08:27:47+00:00	2022-07-25T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	60	70	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_007	Inactive	Planned	Withdrawal unavailability	2022-05-26T08:57:06+01:00	2022-05-07T05:00:00+01:00	2022-05-26T09:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_006	Dismissed	Planned	Withdrawal unavailability	2022-05-25T22:54:53+01:00	2022-05-07T05:00:00+01:00	2022-05-26T12:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_005	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:39:08+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_004	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:26:00+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	47	83	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_003	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:23:16+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	17	83	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_002	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:18:20+00:00	2022-05-07T05:00:00+01:00	2022-05-26T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000648_001	Dismissed	Planned	Withdrawal unavailability	2022-02-17T11:14:59+00:00	2022-06-15T05:00:00+01:00	2022-07-01T05:00:00+01:00	GWh/d	50	80	130	Planned Outage	Stream 8 outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_004	Inactive	Planned	Withdrawal unavailability	2022-04-12T08:02:50+01:00	2022-03-18T09:27:00+00:00	2022-04-12T08:02:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_003	Dismissed	Planned	Withdrawal unavailability	2022-04-06T13:33:47+01:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_002	Dismissed	Planned	Withdrawal unavailability	2022-03-26T21:43:20+00:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	55	75	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000660_001	Dismissed	Planned	Withdrawal unavailability	2022-03-18T09:28:40+00:00	2022-03-18T09:27:00+00:00	2022-05-07T04:59:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000665_004	Inactive	Unplanned	Withdrawal unavailability	2022-04-05T15:25:59+01:00	2022-04-04T07:00:00+01:00	2022-04-05T15:30:00+01:00	GWh/d	85	45	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000665_003	Dismissed	Unplanned	Withdrawal unavailability	2022-04-04T16:26:54+01:00	2022-04-04T07:00:00+01:00	2022-04-05T16:00:00+01:00	GWh/d	85	45	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000665_002	Dismissed	Unplanned	Withdrawal unavailability	2022-04-03T23:07:49+01:00	2022-04-04T07:00:00+01:00	2022-04-04T21:00:00+01:00	GWh/d	85	45	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000665_001	Dismissed	Unplanned	Withdrawal unavailability	2022-04-03T14:01:58+01:00	2022-04-04T05:00:00+01:00	2022-04-04T20:00:00+01:00	GWh/d	85	45	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_005	Inactive	Unplanned	Injection unavailability	2022-04-05T15:25:18+01:00	2022-04-04T07:00:00+01:00	2022-04-05T15:30:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_004	Dismissed	Unplanned	Injection unavailability	2022-04-04T16:27:34+01:00	2022-04-04T07:00:00+01:00	2022-04-05T16:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_003	Dismissed	Unplanned	Injection unavailability	2022-04-03T23:07:29+01:00	2022-04-04T07:00:00+01:00	2022-04-04T21:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_002	Dismissed	Unplanned	Injection unavailability	2022-04-03T23:07:12+01:00	2022-04-04T07:00:00+01:00	2022-04-04T20:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000664_001	Dismissed	Unplanned	Injection unavailability	2022-04-03T14:00:31+01:00	2022-04-04T05:00:00+01:00	2022-04-04T20:00:00+01:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000663_002	Dismissed	Planned	Storage unavailability	2022-04-01T10:57:31+01:00	2022-04-09T18:00:00+01:00	2022-04-14T18:00:00+01:00	TWh	0.483344926	2.985299774	3.4686447	Planned Outage	Cavity 6 Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000663_001	Dismissed	Planned	Storage unavailability	2022-03-31T13:19:34+01:00	2022-04-09T18:00:00+01:00	2022-04-14T18:00:00+01:00	TWh	0.483344926	2.985299774	3.4686447	Planned Outage	Cavity 6 Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000662_002	Dismissed	Planned	Storage unavailability	2022-04-01T10:57:06+01:00	2022-04-06T05:00:00+01:00	2022-04-09T18:00:00+01:00	TWh	0.421650307	3.046994393	3.4686447	Planned Outage	Cavity 1 Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000662_001	Dismissed	Planned	Storage unavailability	2022-03-24T13:27:01+00:00	2022-04-06T05:00:00+01:00	2022-04-09T18:00:00+01:00	TWh	0.421650307	3.046994393	3.4686447	Planned Outage	Cavity 1 Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000651_002	Inactive	Unplanned	Withdrawal unavailability	2022-02-24T12:33:11+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:30:00+00:00	GWh/d	100	0	130	Failure		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.