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

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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
< 4 5 6 7 8 >
Aldbrough	ALD_000000000000000000603_003	Inactive	Unplanned	Withdrawal unavailability	2021-08-09T18:07:25+01:00	2021-08-09T10:31:00+01:00	2021-08-09T18:08:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000603_002	Dismissed	Unplanned	Withdrawal unavailability	2021-08-09T15:57:30+01:00	2021-08-09T10:31:00+01:00	2021-08-09T20:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000603_001	Dismissed	Unplanned	Withdrawal unavailability	2021-08-09T10:43:18+01:00	2021-08-09T10:31:00+01:00	2021-08-09T16:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000600_002	Inactive	Unplanned	Injection unavailability	2021-08-05T16:16:42+01:00	2021-08-04T12:00:00+01:00	2021-08-05T15:55:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000600_001	Dismissed	Unplanned	Injection unavailability	2021-08-04T12:43:48+01:00	2021-08-04T12:00:00+01:00	2021-08-05T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_005	Inactive	Planned	Injection unavailability	2021-07-18T17:40:26+01:00	2021-07-02T05:00:00+01:00	2021-07-18T17:40:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_004	Dismissed	Planned	Injection unavailability	2021-04-01T23:06:09+01:00	2021-07-02T05:00:00+01:00	2021-07-18T18:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_003	Dismissed	Planned	Injection unavailability	2021-03-12T11:18:08+00:00	2021-07-02T05:00:00+01:00	2021-07-18T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_002	Dismissed	Planned	Injection unavailability	2020-07-11T21:48:35+01:00	2021-07-01T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000486_001	Dismissed	Planned	Injection unavailability	2020-07-11T21:30:42+01:00	2021-07-01T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	0	30	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000487_005	Inactive	Planned	Withdrawal unavailability	2021-07-18T17:39:27+01:00	2021-07-02T05:00:00+01:00	2021-07-18T17:40:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000487_004	Dismissed	Planned	Withdrawal unavailability	2021-04-01T23:05:49+01:00	2021-07-02T05:00:00+01:00	2021-07-18T18:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000487_003	Dismissed	Planned	Withdrawal unavailability	2021-03-12T11:17:11+00:00	2021-07-02T05:00:00+01:00	2021-07-18T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000487_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:41:53+01:00	2021-07-01T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000487_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T21:34:14+01:00	2021-07-01T05:00:00+01:00	2021-07-08T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000593_002	Inactive	Unplanned	Injection unavailability	2021-07-11T10:18:33+01:00	2021-07-11T05:13:00+01:00	2021-07-11T10:20:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000593_001	Dismissed	Unplanned	Injection unavailability	2021-07-11T05:40:28+01:00	2021-07-11T05:13:00+01:00	2021-07-11T12:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000589_002	Inactive	Unplanned	Storage unavailability	2021-06-22T16:50:46+01:00	2021-06-21T10:15:00+01:00	2021-06-22T16:55:00+01:00	TWh	0.43084	2.0249777	2.4558177	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000589_001	Dismissed	Unplanned	Storage unavailability	2021-06-21T10:19:06+01:00	2021-06-21T10:15:00+01:00	2021-06-23T18:00:00+01:00	TWh	0.43084	2.0249777	2.4558177	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_004	Inactive	Planned	Withdrawal unavailability	2021-06-16T08:58:18+01:00	2021-04-07T20:20:00+01:00	2021-06-16T08:57:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_003	Dismissed	Planned	Withdrawal unavailability	2021-04-18T18:54:40+01:00	2021-04-07T20:20:00+01:00	2021-07-07T18:00:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_002	Dismissed	Planned	Withdrawal unavailability	2021-04-07T20:58:51+01:00	2021-04-07T20:20:00+01:00	2021-04-30T18:00:00+01:00	GWh/d	50	80	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000570_001	Dismissed	Planned	Withdrawal unavailability	2021-04-07T20:43:59+01:00	2021-04-07T20:20:00+01:00	2021-04-30T18:00:00+01:00	GWh/d	42	88	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000586_003	Inactive	Unplanned	Withdrawal unavailability	2021-05-19T11:34:23+01:00	2021-05-17T17:01:00+01:00	2021-05-19T11:35:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000586_002	Dismissed	Unplanned	Withdrawal unavailability	2021-05-18T17:07:23+01:00	2021-05-17T17:01:00+01:00	2021-05-19T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000586_001	Dismissed	Unplanned	Withdrawal unavailability	2021-05-17T17:24:59+01:00	2021-05-17T17:01:00+01:00	2021-05-18T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000458_001	Dismissed	Planned	Injection unavailability	2020-07-11T13:34:55+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000488_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:42:30+01:00	2021-07-08T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000488_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T21:35:53+01:00	2021-07-08T05:00:00+01:00	2021-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000491_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:39:42+01:00	2022-07-08T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000491_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T21:50:40+01:00	2022-07-08T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000496_003	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:06:03+01:00	2024-07-01T05:00:00+01:00	2024-08-01T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000496_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T13:57:44+01:00	2024-07-01T05:00:00+01:00	2024-08-01T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000496_001	Dismissed	Planned	Withdrawal unavailability	2020-07-12T00:16:27+01:00	2024-07-01T05:00:00+01:00	2024-07-08T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000497_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T13:58:14+01:00	2024-07-08T05:00:00+01:00	2024-08-01T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000497_001	Dismissed	Planned	Withdrawal unavailability	2020-07-12T00:17:47+01:00	2024-07-08T05:00:00+01:00	2024-08-01T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000494_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T13:50:06+01:00	2023-07-08T05:00:00+01:00	2023-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000494_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T23:14:29+01:00	2023-07-08T05:00:00+01:00	2023-07-15T05:00:00+01:00	GWh/d	97.44	32.56	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000457_002	Dismissed	Planned	Injection unavailability	2020-07-11T13:31:39+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000457_001	Dismissed	Planned	Storage unavailability	2020-07-11T13:21:51+01:00	2021-05-08T05:00:00+01:00	2021-05-20T18:00:00+01:00	TWh	2.3352656	0	2.3352656	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000920_002	Active	Planned	Withdrawal unavailability	2024-04-25T18:27:39+01:00	2024-05-08T08:00:00+01:00	2024-05-08T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000920_001	Dismissed	Planned	Withdrawal unavailability	2024-04-25T14:24:39+01:00	2024-05-08T08:00:00+01:00	2024-05-08T16:00:00+01:00	GWh/d	30	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000919_001	Active	Planned	Withdrawal unavailability	2024-04-25T14:09:43+01:00	2024-06-18T08:00:00+01:00	2024-06-18T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000918_001	Active	Unplanned	Withdrawal unavailability	2024-04-25T14:08:36+01:00	2024-06-17T08:00:00+01:00	2024-06-17T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000917_001	Active	Planned	Withdrawal unavailability	2024-04-25T14:06:26+01:00	2024-06-14T08:00:00+01:00	2024-06-14T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000916_001	Active	Planned	Withdrawal unavailability	2024-04-25T14:03:30+01:00	2024-06-13T08:00:00+01:00	2024-06-13T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000915_001	Active	Planned	Withdrawal unavailability	2024-04-25T14:02:10+01:00	2024-06-12T08:00:00+01:00	2024-06-12T16:00:00+01:00	GWh/d	70	60	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000907_002	Inactive	Planned	Storage unavailability	2024-04-16T14:21:32+01:00	2024-04-11T12:26:00+01:00	2024-04-16T14:20:00+01:00	TWh	0.800759992	2.667884708	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000907_001	Dismissed	Planned	Storage unavailability	2024-04-11T12:28:13+01:00	2024-04-11T12:26:00+01:00	2024-04-16T16:00:00+01:00	TWh	0.800759992	2.667884708	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000901_006	Inactive	Unplanned	Withdrawal unavailability	2024-04-09T08:52:07+01:00	2024-03-28T12:10:00+00:00	2024-04-09T08:50:00+01:00	GWh/d	50	80	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.