Last update at: 2024-10-13T11:00:00+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
< 8 9 10 11 12 >
Atwick	ATW_000000000000000000829_001	Dismissed	Planned	Withdrawal unavailability	2023-10-21T11:00:57+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_000000000000000000964_002	Inactive	Planned	Withdrawal unavailability	2024-09-24T11:21:28+01:00	2024-09-24T05:00:00+01:00	2024-09-24T11:21:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000964_001	Dismissed	Planned	Withdrawal unavailability	2024-09-18T08:03:52+01:00	2024-09-24T05:00:00+01:00	2024-09-24T13:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000956_002	Inactive	Planned	Withdrawal unavailability	2024-09-11T16:06:52+01:00	2024-09-11T08:00:00+01:00	2024-09-11T16:06:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000956_001	Dismissed	Planned	Withdrawal unavailability	2024-09-04T14:37:36+01:00	2024-09-11T08:00:00+01:00	2024-09-11T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000955_002	Inactive	Planned	Withdrawal unavailability	2024-09-10T16:50:21+01:00	2024-09-10T08:00:00+01:00	2024-09-10T16:50:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000955_001	Dismissed	Planned	Withdrawal unavailability	2024-09-04T14:32:20+01:00	2024-09-10T08:00:00+01:00	2024-09-10T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000951_002	Inactive	Planned	Injection unavailability	2024-09-02T10:31:42+01:00	2024-09-02T09:30:00+01:00	2024-09-02T10:30:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000951_001	Dismissed	Planned	Injection unavailability	2024-08-16T14:05:51+01:00	2024-09-02T09:30:00+01:00	2024-09-02T11:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000952_002	Inactive	Planned	Withdrawal unavailability	2024-09-02T10:30:53+01:00	2024-09-02T09:30:00+01:00	2024-09-02T10:30:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000952_001	Dismissed	Planned	Withdrawal unavailability	2024-08-16T14:06:37+01:00	2024-09-02T09:30:00+01:00	2024-09-02T11:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000912_003	Active	Planned	Storage unavailability	2024-08-28T09:29:02+01:00	2024-10-21T05:00:00+01:00	2024-10-31T05:00:00+00:00	TWh	0.441907999	2.638639701	3.0805477	Planned Outage	Ald 7	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000912_002	Dismissed	Planned	Storage unavailability	2024-08-22T02:21:14+01:00	2024-09-19T05:00:00+01:00	2024-10-01T05:00:00+01:00	TWh	0.441907999	2.638639701	3.0805477	Planned Outage	Ald 7	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000912_001	Dismissed	Planned	Storage unavailability	2024-04-19T10:35:07+01:00	2024-10-06T05:00:00+01:00	2024-11-15T18:00:00+00:00	TWh	0.44	2.7221642	3.1621642	Planned Outage	Ald 7 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000940_004	Inactive	Planned	Storage unavailability	2024-07-24T17:52:41+01:00	2024-07-10T05:00:00+01:00	2024-07-24T18:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 flowline heater change	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000940_003	Dismissed	Planned	Storage unavailability	2024-07-11T09:43:23+01:00	2024-07-10T05:00:00+01:00	2024-07-24T19:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 flowline heater change	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000940_002	Dismissed	Planned	Storage unavailability	2024-07-04T13:49:49+01:00	2024-07-10T05:00:00+01:00	2024-07-21T05:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 flowline heater change	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000940_001	Dismissed	Planned	Storage unavailability	2024-06-21T10:45:01+01:00	2024-07-11T05:00:00+01:00	2024-07-20T18:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 flowline heater change	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_003	Inactive	Planned	Withdrawal unavailability	2024-07-23T11:53:23+01:00	2024-06-28T05:00:00+01:00	2024-07-23T11:52:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_002	Dismissed	Planned	Withdrawal unavailability	2024-07-22T16:01:12+01:00	2024-06-28T05:00:00+01:00	2024-07-23T12:00:00+01:00	GWh/d	130	0	130	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000826_001	Dismissed	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_000000000000000000825_003	Inactive	Planned	Injection unavailability	2024-07-23T11:25:03+01:00	2024-06-28T05:00:00+01:00	2024-07-23T11:24:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000825_002	Dismissed	Planned	Injection unavailability	2024-07-22T15:58:49+01:00	2024-06-28T05:00:00+01:00	2024-07-23T12:00:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000825_001	Dismissed	Planned	Injection unavailability	2023-10-20T20:09:26+01:00	2024-06-28T05:00:00+01:00	2024-07-23T05:00:00+01:00	GWh/d	30	0	30	Planned Outage	Full site outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000944_002	Inactive	Planned	Storage unavailability	2024-07-18T21:12:12+01:00	2024-07-07T23:30:00+01:00	2024-07-18T21:30:00+01:00	TWh	0.231	2.9311642	3.1621642	Planned Outage	A6 WHM sonar survey	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000944_001	Dismissed	Planned	Storage unavailability	2024-07-04T15:30:49+01:00	2024-07-07T23:30:00+01:00	2024-07-20T19:00:00+01:00	TWh	0.231	2.9311642	3.1621642	Planned Outage	A6 WHM sonar survey	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000946_002	Inactive	Planned	Withdrawal unavailability	2024-07-16T13:29:48+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000946_001	Dismissed	Planned	Withdrawal unavailability	2024-07-16T11:06:10+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000945_002	Inactive	Planned	Injection unavailability	2024-07-16T13:29:25+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000945_001	Dismissed	Planned	Injection unavailability	2024-07-16T11:04:29+01:00	2024-07-16T11:30:00+01:00	2024-07-16T13:30:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	PCS Download	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000938_004	Inactive	Planned	Storage unavailability	2024-07-03T11:26:11+01:00	2024-06-24T05:00:00+01:00	2024-07-03T11:15:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 WHM + Sonar survey.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000938_003	Dismissed	Planned	Storage unavailability	2024-07-02T20:42:57+01:00	2024-06-24T05:00:00+01:00	2024-07-03T18:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 WHM + Sonar survey.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000938_002	Dismissed	Planned	Storage unavailability	2024-07-02T16:43:52+01:00	2024-06-24T05:00:00+01:00	2024-07-02T22:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 WHM + Sonar survey.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000938_001	Dismissed	Planned	Storage unavailability	2024-06-19T09:53:01+01:00	2024-06-24T05:00:00+01:00	2024-07-02T18:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Planned Outage	A5 WHM + Sonar survey.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000824_002	Inactive	Planned	Withdrawal unavailability	2024-06-28T06:02:31+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_000000000000000000824_001	Dismissed	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_000000000000000000943_003	Inactive	Planned	Storage unavailability	2024-06-28T05:24:12+01:00	2024-06-27T08:30:00+01:00	2024-06-28T04:59:00+01:00	TWh	1.477773	1.9908717	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000943_002	Dismissed	Planned	Storage unavailability	2024-06-24T14:23:46+01:00	2024-06-27T08:30:00+01:00	2024-06-28T04:59:00+01:00	TWh	1.477773	1.9908717	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000943_001	Dismissed	Planned	Storage unavailability	2024-06-24T14:21:04+01:00	2024-06-27T05:00:00+01:00	2024-06-28T04:59:00+01:00	TWh	1.477773	1.9908717	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000936_002	Inactive	Planned	Withdrawal unavailability	2024-06-27T14:46:09+01:00	2024-06-27T08:00:00+01:00	2024-06-27T13:50:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000936_001	Dismissed	Planned	Withdrawal unavailability	2024-06-18T13:07:59+01:00	2024-06-27T08:00:00+01:00	2024-06-27T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000935_002	Inactive	Planned	Injection unavailability	2024-06-27T14:45:38+01:00	2024-06-27T08:00:00+01:00	2024-06-27T13:50:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000935_001	Dismissed	Planned	Injection unavailability	2024-06-18T13:06:51+01:00	2024-06-27T08:00:00+01:00	2024-06-27T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000942_003	Inactive	Planned	Storage unavailability	2024-06-27T09:32:32+01:00	2024-06-26T05:00:00+01:00	2024-06-27T08:30:00+01:00	TWh	0.81245	2.6561947	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000942_002	Dismissed	Planned	Storage unavailability	2024-06-24T14:23:29+01:00	2024-06-26T05:00:00+01:00	2024-06-27T08:30:00+01:00	TWh	0.81245	2.6561947	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000942_001	Dismissed	Planned	Storage unavailability	2024-06-24T14:19:46+01:00	2024-06-26T05:00:00+01:00	2024-06-27T04:59:00+01:00	TWh	0.81245	2.6561947	3.4686447	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000934_002	Inactive	Planned	Withdrawal unavailability	2024-06-26T16:05:53+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000934_001	Dismissed	Planned	Withdrawal unavailability	2024-06-18T13:05:17+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	130	0	130	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000933_002	Inactive	Planned	Injection unavailability	2024-06-26T16:05:36+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+01:00	GWh/d	30	0	30	Planned Outage	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000933_001	Dismissed	Planned	Injection unavailability	2024-06-18T13:04:04+01:00	2024-06-26T12:00:00+01:00	2024-06-26T16:00:00+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.