Last update at: 2024-04-27T14:30:00+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/)

Filter Options

Date of event:

From date:

To date:

More filtering options (optional)

	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 >
Atwick	ATW_000000000000000000841_003	Dismissed	Planned	Withdrawal unavailability	2023-11-13T08:15:45+00:00	2023-11-16T05:00:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000841_002	Dismissed	Planned	Withdrawal unavailability	2023-11-10T18:10:45+00:00	2023-11-16T05:00:00+00:00	2023-11-18T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000841_001	Dismissed	Planned	Withdrawal unavailability	2023-11-10T18:05:48+00:00	2023-11-16T05:00:00+00:00	2023-11-28T05:00:00+00:00	GWh/d	30	100	130	Planned Outage	Phase 6 reduction	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_003	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T14:25:28+00:00	2023-11-09T10:34:00+00:00	2023-11-09T14:25:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_002	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T13:23:48+00:00	2023-11-09T10:34:00+00:00	2023-11-09T14:30:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000839_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T10:35:13+00:00	2023-11-09T10:34:00+00:00	2023-11-09T13:00:00+00:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000837_002	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T07:20:15+00:00	2023-11-09T05:05:00+00:00	2023-11-09T07:20:00+00:00	GWh/d	130	0	130	Failure	Fuel Gas	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000837_001	Dismissed	Unplanned	Withdrawal unavailability	2023-11-09T05:24:11+00:00	2023-11-09T05:05:00+00:00	2023-11-09T09:00:00+00:00	GWh/d	130	0	130	Failure	Fuel Gas	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_008	Inactive	Unplanned	Withdrawal unavailability	2023-11-09T05:22:33+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:05:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_007	Dismissed	Unplanned	Withdrawal unavailability	2023-11-06T17:46:54+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:00:00+00:00	GWh/d	50	80	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_006	Dismissed	Unplanned	Withdrawal unavailability	2023-11-01T13:22:38+00:00	2023-10-23T21:38:00+01:00	2023-11-16T05:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_005	Dismissed	Unplanned	Withdrawal unavailability	2023-10-30T11:26:11+00:00	2023-10-23T21:38:00+01:00	2023-11-06T05:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_004	Dismissed	Unplanned	Withdrawal unavailability	2023-10-24T08:38:27+01:00	2023-10-23T21:38:00+01:00	2023-10-30T18:00:00+00:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_003	Dismissed	Unplanned	Withdrawal unavailability	2023-10-23T21:48:28+01:00	2023-10-23T21:38:00+01:00	2023-10-24T18:00:00+01:00	GWh/d	81.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_002	Dismissed	Unplanned	Withdrawal unavailability	2023-10-23T21:46:18+01:00	2023-10-23T21:38:00+01:00	2023-10-24T18:00:00+01:00	GWh/d	21.665	48.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000830_001	Dismissed	Unplanned	Withdrawal unavailability	2023-10-23T21:41:23+01:00	2023-10-23T21:38:00+01:00	2023-10-24T18:00:00+01:00	GWh/d	21.665	108.335	130	Failure	Stream 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_008	Inactive	Planned	Withdrawal unavailability	2023-11-06T17:44:04+00:00	2023-07-17T05:00:00+01:00	2023-11-06T17:30:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_007	Dismissed	Planned	Withdrawal unavailability	2023-10-31T16:06:31+00:00	2023-07-17T05:00:00+01:00	2023-11-06T18:00:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_006	Dismissed	Planned	Withdrawal unavailability	2023-09-15T09:17:54+01:00	2023-07-17T05:00:00+01:00	2023-10-31T18:00:00+00:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_005	Dismissed	Planned	Withdrawal unavailability	2023-08-23T17:47:48+01:00	2023-07-17T05:00:00+01:00	2023-09-30T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_004	Dismissed	Planned	Withdrawal unavailability	2023-08-15T07:17:26+01:00	2023-07-17T05:00:00+01:00	2023-08-31T18:00:00+01:00	GWh/d	60	70	130	Planned Outage	Vortisep / Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_003	Dismissed	Planned	Withdrawal unavailability	2023-08-10T07:56:01+01:00	2023-07-17T05:00:00+01:00	2023-08-31T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_002	Dismissed	Planned	Withdrawal unavailability	2023-07-14T13:24:10+01:00	2023-07-17T05:00:00+01:00	2023-08-14T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000780_001	Dismissed	Planned	Withdrawal unavailability	2023-07-10T10:17:37+01:00	2023-07-17T05:00:00+01:00	2023-07-24T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000833_002	Inactive	Unplanned	Withdrawal unavailability	2023-10-30T18:06:47+00:00	2023-10-30T13:15:00+00:00	2023-10-30T17:15:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	SSSV testing.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000833_001	Dismissed	Unplanned	Withdrawal unavailability	2023-10-30T13:23:05+00:00	2023-10-30T13:15:00+00:00	2023-10-30T17:15:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	SSSV testing.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000831_002	Inactive	Unplanned	Withdrawal unavailability	2023-10-29T15:24:04+00:00	2023-10-29T12:45:00+00:00	2023-10-29T15:22:00+00:00	GWh/d	130	0	130	Failure	Unavailable for withdrawal	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000831_001	Dismissed	Unplanned	Withdrawal unavailability	2023-10-29T12:55:02+00:00	2023-10-29T12:45:00+00:00	2023-10-29T18:00:00+00:00	GWh/d	130	0	130	Failure	Unavailable for withdrawal	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000828_002	Dismissed	Planned	Withdrawal unavailability	2023-10-21T11:02:55+01:00	2024-08-31T05:00:00+01:00	2024-09-29T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000828_001	Dismissed	Planned	Withdrawal unavailability	2023-10-21T10:59:07+01:00	2024-08-31T05:00:00+01:00	2024-09-29T18:00:00+01:00	GWh/d	30	100	130	Planned Outage	Vortisep outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_001	Active	Planned	Withdrawal unavailability	2023-10-20T20:13:14+01:00	2024-06-28T05:00:00+01:00	2024-07-23T05:00:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000824_001	Active	Planned	Withdrawal unavailability	2023-10-20T19:56:33+01:00	2024-06-19T05:00:00+01:00	2024-06-28T05:00:00+01:00	GWh/d	48.33	81.67	130	Planned Outage	stream 8 - outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000823_001	Active	Planned	Withdrawal unavailability	2023-10-20T19:45:15+01:00	2024-06-01T05:00:00+01:00	2024-06-11T18:00:00+01:00	GWh/d	48.33	81.67	130	Planned Outage	Stream 7 - outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000499_002	Dismissed	Planned	Withdrawal unavailability	2023-10-20T17:32:15+01:00	2024-07-15T05:00:00+01:00	2024-08-01T00:00:00+01:00	GWh/d	96.67	33.33	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000499_001	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:14:38+01:00	2024-07-15T05:00:00+01:00	2024-08-01T00:00:00+01:00	GWh/d	96.67	33.33	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000498_003	Dismissed	Planned	Withdrawal unavailability	2023-10-20T17:25:46+01:00	2024-07-01T05:00:00+01:00	2024-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000498_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T17:58:18+01:00	2024-07-01T05:00:00+01:00	2024-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000498_001	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:11:39+01:00	2020-07-01T05:00:00+01:00	2024-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000804_002	Inactive	Planned	Withdrawal unavailability	2023-10-10T15:42:19+01:00	2023-10-10T08:00:00+01:00	2023-10-10T15:41:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 2)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000804_001	Dismissed	Planned	Withdrawal unavailability	2023-09-05T09:58:44+01:00	2023-10-10T08:00:00+01:00	2023-10-10T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 2)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000802_002	Inactive	Planned	Withdrawal unavailability	2023-10-09T16:28:31+01:00	2023-10-09T08:00:00+01:00	2023-10-09T16:25:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000802_001	Dismissed	Planned	Withdrawal unavailability	2023-09-05T09:55:24+01:00	2023-10-09T08:00:00+01:00	2023-10-09T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	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
Atwick	ATW_000000000000000000812_002	Inactive	Planned	Withdrawal unavailability	2023-10-04T10:56:18+01:00	2023-10-04T09:00:00+01:00	2023-10-04T10:50:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000812_001	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:35:27+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000813_002	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:36:35+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000813_001	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:35:48+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000800_002	Inactive	Planned	Withdrawal unavailability	2023-09-27T18:02:32+01:00	2023-09-27T08:00:00+01:00	2023-09-27T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Gas Analytical Validations	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.