Last update at: 2023-09-20T16:00:00+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	Balancing Zone	Affected Asset or Unit EIC Code	Market Participant	Market Participant Code
< 2 3 4 5 6 >
Aldbrough	ALD_000000000000000000644_003	Dismissed	Unplanned	Injection unavailability	2022-03-04T14:28:58+00:00	2022-01-31T19:32:00+00:00	2022-03-11T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_002	Dismissed	Unplanned	Injection unavailability	2022-02-25T20:49:43+00:00	2022-01-31T19:32:00+00:00	2022-03-04T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000644_001	Dismissed	Unplanned	Injection unavailability	2022-01-31T19:33:02+00:00	2022-01-31T19:32:00+00:00	2022-02-28T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000653_002	Inactive	Unplanned	Injection unavailability	2022-03-07T08:23:38+00:00	2022-03-07T02:05:00+00:00	2022-03-07T08:15:00+00:00	GWh/d	311.56	0	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000653_001	Dismissed	Unplanned	Injection unavailability	2022-03-07T02:06:03+00:00	2022-03-07T02:05:00+00:00	2022-03-07T12:00:00+00:00	GWh/d	311.56	0	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000654_002	Inactive	Unplanned	Withdrawal unavailability	2022-03-07T08:23:05+00:00	2022-03-07T05:35:00+00:00	2022-03-07T08:15:00+00:00	GWh/d	342.3	0	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000654_001	Dismissed	Unplanned	Withdrawal unavailability	2022-03-07T05:36:31+00:00	2022-03-07T05:35:00+00:00	2022-03-07T10:00:00+00:00	GWh/d	342.3	0	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	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
Atwick	ATW_000000000000000000651_001	Dismissed	Unplanned	Withdrawal unavailability	2022-02-24T11:32:18+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:45:00+00:00	GWh/d	100	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000652_002	Inactive	Unplanned	Injection unavailability	2022-02-24T12:32:45+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:30:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000652_001	Dismissed	Unplanned	Injection unavailability	2022-02-24T11:33:13+00:00	2022-02-24T10:45:00+00:00	2022-02-24T12:45:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000647_002	Inactive	Unplanned	Injection unavailability	2022-02-16T20:51:36+00:00	2022-02-16T19:10:00+00:00	2022-02-16T20:52:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000647_001	Dismissed	Unplanned	Injection unavailability	2022-02-16T19:39:03+00:00	2022-02-16T19:10:00+00:00	2022-02-17T19:10:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000645_004	Inactive	Unplanned	Withdrawal unavailability	2022-02-06T16:38:12+00:00	2022-02-03T13:28:00+00:00	2022-02-06T16:35:00+00:00	GWh/d	108	22	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000645_003	Dismissed	Unplanned	Withdrawal unavailability	2022-02-04T10:17:47+00:00	2022-02-03T13:28:00+00:00	2022-02-06T18:00:00+00:00	GWh/d	108	22	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000645_002	Dismissed	Unplanned	Withdrawal unavailability	2022-02-03T22:22:35+00:00	2022-02-03T13:28:00+00:00	2022-02-06T18:00:00+00:00	GWh/d	97	33	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000645_001	Dismissed	Unplanned	Withdrawal unavailability	2022-02-03T13:30:02+00:00	2022-02-03T13:28:00+00:00	2022-02-06T18:00:00+00:00	GWh/d	67	63	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000643_002	Inactive	Unplanned	Withdrawal unavailability	2022-01-31T07:29:54+00:00	2022-01-30T20:40:00+00:00	2022-01-31T10:00:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000643_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-30T21:03:13+00:00	2022-01-30T20:40:00+00:00	2022-01-31T10:00:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000641_002	Inactive	Unplanned	Injection unavailability	2022-01-27T10:20:52+00:00	2022-01-27T00:00:00+00:00	2022-01-27T10:30:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000641_001	Dismissed	Unplanned	Injection unavailability	2022-01-27T00:49:22+00:00	2022-01-27T00:00:00+00:00	2022-01-27T16:00:00+00:00	GWh/d	111.02	200.54	311.56	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000639_002	Inactive	Unplanned	Withdrawal unavailability	2022-01-22T04:57:08+00:00	2022-01-21T08:51:00+00:00	2022-01-22T05:00:00+00:00	GWh/d	123	7	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000639_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-21T09:09:41+00:00	2022-01-21T08:51:00+00:00	2022-01-22T05:00:00+00:00	GWh/d	123	7	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000636_002	Inactive	Unplanned	Withdrawal unavailability	2022-01-19T17:41:13+00:00	2022-01-18T06:00:00+00:00	2022-01-19T17:30:00+00:00	GWh/d	48.72	81.28	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000636_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-14T10:20:41+00:00	2022-01-18T06:00:00+00:00	2022-01-19T18:00:00+00:00	GWh/d	48.72	81.28	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000638_003	Inactive	Planned	Withdrawal unavailability	2022-01-18T17:35:09+00:00	2022-01-18T08:00:00+00:00	2022-01-18T17:30:00+00:00	GWh/d	32.4	48.8	130	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000638_002	Dismissed	Planned	Withdrawal unavailability	2022-01-18T08:57:27+00:00	2022-01-18T08:00:00+00:00	2022-01-18T18:00:00+00:00	GWh/d	32.4	48.8	130	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000638_001	Dismissed	Planned	Withdrawal unavailability	2022-01-17T17:42:42+00:00	2022-01-18T08:00:00+00:00	2022-01-18T18:00:00+00:00	GWh/d	32.4	97.6	130	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000637_002	Inactive	Unplanned	Withdrawal unavailability	2022-01-17T17:02:11+00:00	2022-01-17T12:30:00+00:00	2022-01-17T17:05:00+00:00	GWh/d	32.4	97.6	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000637_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-17T12:38:24+00:00	2022-01-17T12:30:00+00:00	2022-01-17T18:00:00+00:00	GWh/d	32.4	97.6	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000625_002	Inactive	Planned	Injection unavailability	2022-01-15T14:59:07+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	30	0	30	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000625_001	Dismissed	Planned	Injection unavailability	2021-12-16T14:07:39+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	30	0	30	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000626_002	Inactive	Planned	Withdrawal unavailability	2022-01-15T14:58:36+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	130	0	130	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000626_001	Dismissed	Planned	Withdrawal unavailability	2021-12-16T14:08:31+00:00	2022-01-15T08:00:00+00:00	2022-01-15T16:00:00+00:00	GWh/d	130	0	130	Planned Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000635_002	Inactive	Unplanned	Withdrawal unavailability	2022-01-13T16:37:33+00:00	2022-01-13T14:20:00+00:00	2022-01-13T16:30:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000635_001	Dismissed	Unplanned	Withdrawal unavailability	2022-01-13T14:26:34+00:00	2022-01-13T14:20:00+00:00	2022-01-13T18:00:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000634_002	Inactive	Unplanned	Injection unavailability	2022-01-13T16:37:09+00:00	2022-01-13T14:20:00+00:00	2022-01-13T16:30:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000634_001	Dismissed	Unplanned	Injection unavailability	2022-01-13T14:25:34+00:00	2022-01-13T14:20:00+00:00	2022-01-13T18:00:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_004	Inactive	Unplanned	Withdrawal unavailability	2021-12-20T13:20:35+00:00	2021-12-19T23:30:00+00:00	2021-12-20T13:20:00+00:00	GWh/d	121.5	220.8	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_003	Dismissed	Unplanned	Withdrawal unavailability	2021-12-20T11:54:39+00:00	2021-12-19T23:30:00+00:00	2021-12-20T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_002	Dismissed	Unplanned	Withdrawal unavailability	2021-12-19T23:15:09+00:00	2021-12-19T23:30:00+00:00	2021-12-20T12:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000629_001	Dismissed	Unplanned	Withdrawal unavailability	2021-12-19T20:40:49+00:00	2021-12-19T20:30:00+00:00	2021-12-20T12:00:00+00:00	GWh/d	342.3	0	342.3	Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000627_002	Inactive	Unplanned	Withdrawal unavailability	2021-12-19T19:06:10+00:00	2021-12-19T16:13:00+00:00	2021-12-19T19:00:00+00:00	GWh/d	94	36	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000627_001	Dismissed	Unplanned	Withdrawal unavailability	2021-12-19T16:18:40+00:00	2021-12-19T16:13:00+00:00	2021-12-19T21:00:00+00:00	GWh/d	94	36	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000622_001	Dismissed	Planned	Storage unavailability	2021-12-08T14:04:26+00:00	2021-12-14T08:00:00+00:00	2021-12-14T16:00:00+00:00	TWh	2.4558177	0	2.4558177	Planned Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000620_002	Inactive	Unplanned	Withdrawal unavailability	2021-11-25T23:30:47+00:00	2021-11-25T20:30:00+00:00	2021-11-25T23:22:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000620_001	Dismissed	Unplanned	Withdrawal unavailability	2021-11-25T21:09:10+00:00	2021-11-25T20:30:00+00:00	2021-11-26T02:00:00+00:00	GWh/d	130	0	130	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000619_002	Inactive	Unplanned	Injection unavailability	2021-11-25T23:30:13+00:00	2021-11-25T20:30:00+00:00	2021-11-25T23:22:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000619_001	Dismissed	Unplanned	Injection unavailability	2021-11-25T21:07:53+00:00	2021-11-25T20:30:00+00:00	2021-11-26T02:00:00+00:00	GWh/d	30	0	30	Failure	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000598_002	Inactive	Planned	Injection unavailability	2021-10-22T16:16:59+01:00	2021-10-22T09:00:00+01:00	2021-10-22T16:00:00+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.