Last update at: 2024-04-24T13:00:00+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 >
Aldbrough	ALD_000000000000000000914_001	Active	Planned	Withdrawal unavailability	2024-04-24T12:31:34+01:00	2024-04-25T10:00:00+01:00	2024-04-25T15:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	1ESD5110 Valve test Rescheduled	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000913_002	Inactive	Planned	Withdrawal unavailability	2024-04-24T12:24:59+01:00	2024-04-24T09:00:00+01:00	2024-04-24T12:25:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod T1 1MV5110 Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000913_001	Dismissed	Planned	Withdrawal unavailability	2024-04-23T17:05:38+01:00	2024-04-24T09:00:00+01:00	2024-04-24T13:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod T1 1MV5110 Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_006	Inactive	Unplanned	Withdrawal unavailability	2024-04-21T15:45:46+01:00	2024-04-11T00:30:00+01:00	2024-04-21T15:45:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_005	Dismissed	Unplanned	Withdrawal unavailability	2024-04-18T15:47:00+01:00	2024-04-11T00:30:00+01:00	2024-04-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_004	Dismissed	Unplanned	Withdrawal unavailability	2024-04-16T14:25:52+01:00	2024-04-11T00:30:00+01:00	2024-04-19T12:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_003	Dismissed	Unplanned	Withdrawal unavailability	2024-04-12T08:30:50+01:00	2024-04-11T00:30:00+01:00	2024-04-17T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_002	Dismissed	Unplanned	Withdrawal unavailability	2024-04-11T01:06:57+01:00	2024-04-11T00:30:00+01:00	2024-04-12T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 2 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000906_001	Dismissed	Unplanned	Withdrawal unavailability	2024-04-11T00:28:30+01:00	2024-04-11T00:30:00+01:00	2024-04-12T12:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Train 1 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000910_001	Active	Planned	Withdrawal unavailability	2024-04-17T14:45:15+01:00	2024-06-05T10:00:00+01:00	2024-06-05T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	A4z software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000904_003	Inactive	Planned	Withdrawal unavailability	2024-04-12T08:29:18+01:00	2024-04-09T12:00:00+01:00	2024-04-12T08:30:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	PT 1. Choke stack replacement.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000904_002	Dismissed	Planned	Withdrawal unavailability	2024-04-10T16:19:29+01:00	2024-04-09T12:00:00+01:00	2024-04-12T12:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	PT 1. Choke stack replacement.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000904_001	Dismissed	Planned	Withdrawal unavailability	2024-04-03T11:35:06+01:00	2024-04-09T12:00:00+01:00	2024-04-11T12:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	PT 1. Choke stack replacement.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000903_002	Inactive	Planned	Withdrawal unavailability	2024-04-03T15:02:32+01:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000903_001	Dismissed	Planned	Withdrawal unavailability	2024-03-28T15:27:28+00:00	2024-04-03T10:00:00+01:00	2024-04-03T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000900_002	Inactive	Unplanned	Withdrawal unavailability	2024-03-27T16:02:31+00:00	2024-03-27T14:35:00+00:00	2024-03-27T16:00:00+00:00	GWh/d	342.3	0	342.3	Failure	ESD fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000900_001	Dismissed	Unplanned	Withdrawal unavailability	2024-03-27T14:35:37+00:00	2024-03-27T14:35:00+00:00	2024-03-27T17:00:00+00:00	GWh/d	342.3	0	342.3	Failure	ESD fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000895_002	Inactive	Planned	Withdrawal unavailability	2024-03-27T15:02:31+00:00	2024-03-27T08:00:00+00:00	2024-03-27T14:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000895_001	Dismissed	Planned	Withdrawal unavailability	2024-03-04T08:26:03+00:00	2024-03-27T08:00:00+00:00	2024-03-27T14:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Software download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000482_005	Active	Planned	Withdrawal unavailability	2024-03-08T09:57:56+00:00	2024-05-05T05:00:00+01:00	2024-05-31T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000482_004	Dismissed	Planned	Withdrawal unavailability	2024-02-26T12:31:55+00:00	2024-05-05T05:00:00+01:00	2024-05-30T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000482_003	Dismissed	Planned	Withdrawal unavailability	2023-11-01T08:58:13+00:00	2024-05-05T05:00:00+01:00	2024-05-27T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000482_002	Dismissed	Planned	Withdrawal unavailability	2023-07-06T11:07:56+01:00	2024-06-02T05:00:00+01:00	2024-06-16T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000482_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:34:24+01:00	2024-06-02T05:00:00+01:00	2024-06-16T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_006	Active	Planned	Withdrawal unavailability	2024-02-26T13:07:29+00:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_005	Dismissed	Planned	Withdrawal unavailability	2024-02-26T12:29:55+00:00	2024-05-12T05:00:00+01:00	2024-05-23T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_004	Dismissed	Planned	Withdrawal unavailability	2023-11-01T08:20:00+00:00	2024-05-12T05:00:00+01:00	2024-05-26T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_003	Dismissed	Planned	Withdrawal unavailability	2023-07-25T08:34:12+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_002	Dismissed	Planned	Withdrawal unavailability	2021-06-30T09:54:19+01:00	2024-05-12T05:00:00+01:00	2024-05-21T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000480_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:29:20+01:00	2024-05-12T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_004	Active	Planned	Withdrawal unavailability	2024-02-26T12:32:55+00:00	2024-06-08T05:00:00+01:00	2024-06-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_003	Dismissed	Planned	Withdrawal unavailability	2023-11-01T08:59:38+00:00	2024-06-01T05:00:00+01:00	2024-06-18T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_002	Dismissed	Planned	Withdrawal unavailability	2023-07-06T11:02:26+01:00	2024-05-10T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000481_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T16:32:14+01:00	2024-05-10T05:00:00+01:00	2024-05-24T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000891_002	Inactive	Unplanned	Withdrawal unavailability	2024-02-13T11:56:38+00:00	2024-02-13T06:30:00+00:00	2024-02-13T11:59:00+00:00	GWh/d	342.3	0	342.3	Failure	Site Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000891_001	Dismissed	Unplanned	Withdrawal unavailability	2024-02-13T06:33:25+00:00	2024-02-13T06:30:00+00:00	2024-02-13T18:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Site Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_004	Inactive	Unplanned	Withdrawal unavailability	2024-01-13T08:44:07+00:00	2024-01-12T10:08:00+00:00	2024-01-13T08:43:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_003	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T22:41:08+00:00	2024-01-12T10:08:00+00:00	2024-01-13T12:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_002	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T15:34:48+00:00	2024-01-12T10:08:00+00:00	2024-01-12T23:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000876_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T10:09:22+00:00	2024-01-12T10:08:00+00:00	2024-01-12T16:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Train sequencing faults	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_006	Inactive	Unplanned	Withdrawal unavailability	2024-01-12T01:55:16+00:00	2024-01-11T11:45:00+00:00	2024-01-12T01:56:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_005	Dismissed	Unplanned	Withdrawal unavailability	2024-01-12T01:02:15+00:00	2024-01-11T11:45:00+00:00	2024-01-12T02:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_004	Dismissed	Unplanned	Withdrawal unavailability	2024-01-11T23:41:30+00:00	2024-01-11T11:45:00+00:00	2024-01-12T01:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_003	Dismissed	Unplanned	Withdrawal unavailability	2024-01-11T19:47:33+00:00	2024-01-11T11:45:00+00:00	2024-01-12T00:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_002	Dismissed	Unplanned	Withdrawal unavailability	2024-01-11T16:36:00+00:00	2024-01-11T11:45:00+00:00	2024-01-11T20:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000875_001	Dismissed	Unplanned	Withdrawal unavailability	2024-01-11T11:54:47+00:00	2024-01-11T11:45:00+00:00	2024-01-11T17:00:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000870_002	Inactive	Unplanned	Withdrawal unavailability	2023-12-23T21:07:50+00:00	2023-12-23T19:00:00+00:00	2023-12-23T21:00:00+00:00	GWh/d	342.3	0	342.3	Failure	F&G Fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000870_001	Dismissed	Unplanned	Withdrawal unavailability	2023-12-23T19:01:17+00:00	2023-12-23T19:00:00+00:00	2023-12-23T22:00:00+00:00	GWh/d	342.3	0	342.3	Failure	F&G Fault	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000868_002	Inactive	Unplanned	Withdrawal unavailability	2023-12-13T20:12:19+00:00	2023-12-13T19:32:00+00:00	2023-12-13T20:10:00+00:00	GWh/d	342.3	0	342.3	Failure	Hot Water Heater issues	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000868_001	Dismissed	Unplanned	Withdrawal unavailability	2023-12-13T19:34:41+00:00	2023-12-13T19:32:00+00:00	2023-12-13T22:00:00+00:00	GWh/d	342.3	0	342.3	Failure	Hot Water Heater issues	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.