Last update at: 2024-04-30T13:30:00+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
< 6 7 8 9 10 >
Atwick	ATW_000000000000000000723_002	Inactive	Planned	Storage unavailability	2023-01-20T18:43:05+00:00	2023-01-20T06:00:00+00:00	2023-01-20T18:00:00+00:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Six Monthly Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000723_001	Dismissed	Planned	Storage unavailability	2023-01-10T07:31:25+00:00	2023-01-20T06:00:00+00:00	2023-01-20T18:00:00+00:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Six Monthly Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000722_002	Inactive	Planned	Storage unavailability	2023-01-19T19:02:32+00:00	2023-01-19T06:00:00+00:00	2023-01-19T18:00:00+00:00	TWh	0.238280125	3.230364575	3.4686447	Planned Outage	Cavity 2 Six Monthly Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000722_001	Dismissed	Planned	Storage unavailability	2023-01-10T07:29:17+00:00	2023-01-19T06:00:00+00:00	2023-01-19T18:00:00+00:00	TWh	0.238280125	3.230364575	3.4686447	Planned Outage	Cavity 2 Six Monthly Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000721_002	Inactive	Planned	Storage unavailability	2023-01-18T08:43:03+00:00	2023-01-18T06:00:00+00:00	2023-01-18T08:40:00+00:00	TWh	0.48312084	2.98552386	3.4686447	Planned Outage	Cavity 8 6 Six Monthly Maintenance.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000721_001	Dismissed	Planned	Storage unavailability	2023-01-10T07:25:16+00:00	2023-01-18T06:00:00+00:00	2023-01-18T18:00:00+00:00	TWh	0.48312084	2.98552386	3.4686447	Planned Outage	Cavity 8 6 Six Monthly Maintenance.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000720_002	Inactive	Planned	Withdrawal unavailability	2023-01-04T16:06:09+00:00	2023-01-04T08:00:00+00:00	2023-01-04T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production train 1, valve maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000720_001	Dismissed	Planned	Withdrawal unavailability	2023-01-03T13:31:11+00:00	2023-01-04T08:00:00+00:00	2023-01-04T16:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production train 1, valve maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000718_002	Inactive	Planned	Withdrawal unavailability	2022-12-30T16:53:25+00:00	2022-12-27T05:00:00+00:00	2022-12-30T16:54:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000718_001	Dismissed	Planned	Withdrawal unavailability	2022-12-23T12:27:31+00:00	2022-12-27T05:00:00+00:00	2022-12-30T18:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000719_002	Inactive	Planned	Withdrawal unavailability	2022-12-30T16:52:25+00:00	2022-12-27T05:00:00+00:00	2022-12-30T16:50:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000719_001	Dismissed	Planned	Withdrawal unavailability	2022-12-23T12:27:55+00:00	2022-12-27T05:00:00+00:00	2022-12-30T18:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000714_002	Dismissed	Planned	Withdrawal unavailability	2022-12-19T17:43:20+00:00	2022-12-27T05:00:00+00:00	2022-12-31T18:00:00+00:00	GWh/d	100	30	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000714_001	Dismissed	Planned	Withdrawal unavailability	2022-12-16T14:09:39+00:00	2022-12-27T05:00:00+00:00	2022-12-31T18:00:00+00:00	GWh/d	100	30	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000706_003	Inactive	Planned	Storage unavailability	2022-12-02T14:52:18+00:00	2022-11-27T05:00:00+00:00	2022-12-02T15:00:00+00:00	TWh	0.41	2.8917895	3.3017895	Planned Outage	Wellhead maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000706_002	Dismissed	Planned	Storage unavailability	2022-12-01T15:24:20+00:00	2022-11-27T05:00:00+00:00	2022-12-02T18:00:00+00:00	TWh	0.41	2.8917895	3.3017895	Planned Outage	Wellhead maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000706_001	Dismissed	Planned	Storage unavailability	2022-11-23T15:21:57+00:00	2022-11-27T05:00:00+00:00	2022-12-01T18:00:00+00:00	TWh	0.41	2.8917895	3.3017895	Planned Outage	Wellhead maintenance	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000704_002	Inactive	Planned	Injection unavailability	2022-11-19T09:18:39+00:00	2022-11-19T07:30:00+00:00	2022-11-19T09:15:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000704_001	Dismissed	Planned	Injection unavailability	2022-11-18T18:59:11+00:00	2022-11-19T07:30:00+00:00	2022-11-19T11:30:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000705_002	Inactive	Planned	Withdrawal unavailability	2022-11-19T09:18:15+00:00	2022-11-19T07:30:00+00:00	2022-11-19T09:15:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000705_001	Dismissed	Planned	Withdrawal unavailability	2022-11-18T19:00:18+00:00	2022-11-19T07:30:00+00:00	2022-11-19T11:30:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	Compressor 2 drying run	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_007	Inactive	Planned	Injection unavailability	2022-11-19T08:32:32+00:00	2022-11-02T05:00:00+00:00	2022-11-19T07:30:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_006	Dismissed	Planned	Injection unavailability	2022-11-18T18:57:30+00:00	2022-11-02T05:00:00+00:00	2022-11-19T07:30:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_005	Dismissed	Planned	Injection unavailability	2022-11-18T13:52:57+00:00	2022-11-02T05:00:00+00:00	2022-11-19T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_004	Dismissed	Planned	Injection unavailability	2022-11-17T17:04:07+00:00	2022-11-02T05:00:00+00:00	2022-11-18T14:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_003	Dismissed	Planned	Injection unavailability	2022-11-15T16:35:47+00:00	2022-11-02T05:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage. Further extended.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:22:18+00:00	2022-11-02T05:00:00+00:00	2022-11-15T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000471_001	Dismissed	Planned	Injection unavailability	2020-07-11T15:59:40+01:00	2022-10-30T05:00:00+00:00	2022-11-09T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000702_002	Dismissed	Planned	Injection unavailability	2022-11-18T13:52:34+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000702_001	Dismissed	Planned	Injection unavailability	2022-11-17T16:59:09+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	311.56	0	311.56	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000703_002	Dismissed	Planned	Withdrawal unavailability	2022-11-18T13:52:20+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000703_001	Dismissed	Planned	Withdrawal unavailability	2022-11-17T17:03:31+00:00	2022-11-18T14:00:00+00:00	2022-11-18T18:00:00+00:00	GWh/d	342.3	0	342.3	Planned Outage	COMP 2 DRYING RUN	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_005	Inactive	Planned	Withdrawal unavailability	2022-11-04T00:57:46+00:00	2022-10-22T05:00:00+01:00	2022-11-04T00:57:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_004	Dismissed	Planned	Withdrawal unavailability	2022-10-30T09:47:15+00:00	2022-10-22T05:00:00+01:00	2022-11-04T18:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_003	Dismissed	Planned	Withdrawal unavailability	2022-10-30T01:21:29+00:00	2022-10-22T05:00:00+01:00	2022-10-30T11:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_002	Dismissed	Planned	Withdrawal unavailability	2022-10-27T13:27:45+01:00	2022-10-22T05:00:00+01:00	2022-10-30T05:00:00+00:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000698_001	Dismissed	Planned	Withdrawal unavailability	2022-10-15T16:29:04+01:00	2022-10-22T05:00:00+01:00	2022-10-29T05:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_003	Inactive	Planned	Injection unavailability	2022-11-01T16:58:43+00:00	2022-11-01T05:00:00+00:00	2022-11-01T17:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:20:54+00:00	2022-11-01T05:00:00+00:00	2022-11-02T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000610_001	Dismissed	Planned	Injection unavailability	2021-10-08T10:42:16+01:00	2022-10-29T05:00:00+01:00	2022-10-30T05:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Compressor 1 Siemens maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000470_004	Inactive	Planned	Injection unavailability	2022-11-01T09:56:22+00:00	2022-10-24T05:00:00+01:00	2022-11-01T09:54:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000470_003	Dismissed	Planned	Injection unavailability	2022-10-31T17:30:34+00:00	2022-10-24T05:00:00+01:00	2022-11-01T10:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000470_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:19:44+00:00	2022-10-24T05:00:00+01:00	2022-10-31T18:00:00+00:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 3 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000470_001	Dismissed	Planned	Injection unavailability	2020-07-11T15:57:02+01:00	2022-10-24T05:00:00+01:00	2022-10-29T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000469_005	Inactive	Planned	Injection unavailability	2022-10-23T19:02:32+01:00	2022-10-10T05:00:00+01:00	2022-10-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000469_004	Dismissed	Planned	Injection unavailability	2022-10-21T15:22:17+01:00	2022-10-10T05:00:00+01:00	2022-10-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000469_003	Dismissed	Planned	Injection unavailability	2022-09-08T14:17:01+01:00	2022-10-10T05:00:00+01:00	2022-10-21T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000469_002	Dismissed	Planned	Injection unavailability	2021-11-24T11:18:21+00:00	2022-10-17T05:00:00+01:00	2022-10-21T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000469_001	Dismissed	Planned	Injection unavailability	2020-07-11T15:53:57+01:00	2022-10-17T05:00:00+01:00	2022-10-22T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Comp 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000689_002	Inactive	Planned	Withdrawal unavailability	2022-10-21T15:35:59+01:00	2022-10-21T08:30:00+01:00	2022-10-21T15:25:00+01:00	GWh/d	130	0	130	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.