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

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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
< 3 4 5 6 7 >
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
Atwick	ATW_000000000000000000689_001	Dismissed	Planned	Withdrawal unavailability	2022-09-21T08:55:01+01:00	2022-10-21T08:30:00+01:00	2022-10-21T16:30:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000688_002	Inactive	Planned	Injection unavailability	2022-10-21T15:32:06+01:00	2022-10-21T08:30:00+01:00	2022-10-21T15:25:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000688_001	Dismissed	Planned	Injection unavailability	2022-09-21T08:50:52+01:00	2022-10-21T08:30:00+01:00	2022-10-21T16:30:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000687_002	Inactive	Planned	Withdrawal unavailability	2022-10-20T16:24:28+01:00	2022-10-20T08:30:00+01:00	2022-10-20T16:20:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000687_001	Dismissed	Planned	Withdrawal unavailability	2022-09-21T08:45:40+01:00	2022-10-20T08:30:00+01:00	2022-10-20T16:30:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000686_002	Inactive	Planned	Injection unavailability	2022-10-20T16:24:05+01:00	2022-10-20T08:30:00+01:00	2022-10-20T16:20:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000686_001	Dismissed	Planned	Injection unavailability	2022-09-21T08:37:44+01:00	2022-10-20T08:30:00+01:00	2022-10-20T16:30:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000696_002	Inactive	Planned	Storage unavailability	2022-10-11T16:35:55+01:00	2022-10-11T08:00:00+01:00	2022-10-11T16:00:00+01:00	TWh	0.468711066	2.999933634	3.4686447	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000696_001	Dismissed	Planned	Storage unavailability	2022-10-06T13:25:59+01:00	2022-10-11T08:00:00+01:00	2022-10-11T16:00:00+01:00	TWh	0.468711066	2.999933634	3.4686447	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000691_003	Inactive	Planned	Storage unavailability	2022-10-02T17:05:09+01:00	2022-10-02T03:00:00+01:00	2022-10-02T17:05:00+01:00	TWh	1.2399	1.7054019	2.9453019	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000691_002	Dismissed	Planned	Storage unavailability	2022-10-02T10:19:17+01:00	2022-10-02T03:00:00+01:00	2022-10-02T18:00:00+01:00	TWh	1.2399	1.7054019	2.9453019	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000691_001	Dismissed	Planned	Storage unavailability	2022-09-23T16:24:34+01:00	2022-10-02T03:00:00+01:00	2022-10-02T18:00:00+01:00	TWh	1.701	1.2443019	2.9453019	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000693_001	Inactive	Planned	Withdrawal unavailability	2022-10-01T14:23:11+01:00	2022-09-21T16:20:00+01:00	2022-10-01T14:15:00+01:00	GWh/d	48.25	81.75	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_006	Inactive	Planned	Withdrawal unavailability	2022-09-17T07:37:24+01:00	2022-08-07T18:00:00+01:00	2022-09-17T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_005	Dismissed	Planned	Withdrawal unavailability	2022-09-11T08:34:00+01:00	2022-08-07T18:00:00+01:00	2022-09-17T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_004	Dismissed	Planned	Withdrawal unavailability	2022-08-03T06:55:33+01:00	2022-08-07T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_003	Dismissed	Planned	Withdrawal unavailability	2022-07-27T07:04:19+01:00	2022-08-03T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_002	Dismissed	Planned	Withdrawal unavailability	2022-07-22T14:03:27+01:00	2022-07-28T18:00:00+01:00	2022-09-15T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000676_001	Dismissed	Planned	Withdrawal unavailability	2022-06-27T09:46:58+01:00	2022-07-28T18:00:00+01:00	2022-08-02T18:00:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000677_002	Dismissed	Planned	Storage unavailability	2022-09-12T12:36:06+01:00	2022-09-16T05:00:00+01:00	2022-10-07T18:00:00+01:00	TWh	0.43	2.0549147	2.9453019	Planned Outage	A7 Wellhead works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000677_001	Dismissed	Planned	Storage unavailability	2022-06-30T14:31:38+01:00	2022-09-16T05:00:00+01:00	2022-10-07T18:00:00+01:00	TWh	0.43	2.0549147	2.4849147	Planned Outage	A7 Wellhead works.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000683_002	Inactive	Planned	Injection unavailability	2022-09-07T18:01:40+01:00	2022-09-06T05:00:00+01:00	2022-09-07T17:58:00+01:00	GWh/d	311.56	0	311.56	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000683_001	Dismissed	Planned	Injection unavailability	2022-08-17T14:16:23+01:00	2022-09-06T05:00:00+01:00	2022-09-08T08:00:00+01:00	GWh/d	311.56	0	311.56	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000684_002	Inactive	Planned	Withdrawal unavailability	2022-09-07T18:01:20+01:00	2022-09-06T05:00:00+01:00	2022-09-07T17:58:00+01:00	GWh/d	342.3	0	342.3	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000684_001	Dismissed	Planned	Withdrawal unavailability	2022-08-17T14:23:45+01:00	2022-09-06T05:00:00+01:00	2022-09-08T08:00:00+01:00	GWh/d	342.3	0	342.3	Failure	Flowline 2 valve replacement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000685_002	Inactive	Planned	Storage unavailability	2022-08-30T10:19:24+01:00	2022-08-30T05:00:00+01:00	2022-08-30T10:05:00+01:00	TWh	0.82033	1.6645847	2.4849147	Planned Outage	Ginpole Lift Ald 6	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000685_001	Dismissed	Planned	Storage unavailability	2022-08-30T00:37:06+01:00	2022-08-30T05:00:00+01:00	2022-08-30T12:00:00+01:00	TWh	0.82033	1.6645847	2.4849147	Planned Outage	Ginpole Lift Ald 6	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_009	Inactive	Planned	Withdrawal unavailability	2022-08-09T15:56:32+01:00	2022-07-01T05:00:00+01:00	2022-08-09T15:55:00+01:00	GWh/d	130	0	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_008	Dismissed	Planned	Withdrawal unavailability	2022-08-08T17:34:30+01:00	2022-07-01T05:00:00+01:00	2022-08-09T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_007	Dismissed	Planned	Withdrawal unavailability	2022-08-06T17:00:03+01:00	2022-07-01T05:00:00+01:00	2022-08-08T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_006	Dismissed	Planned	Withdrawal unavailability	2022-07-29T14:50:34+01:00	2022-07-01T05:00:00+01:00	2022-08-07T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_005	Dismissed	Planned	Withdrawal unavailability	2022-07-22T14:31:46+01:00	2022-07-01T05:00:00+01:00	2022-08-03T18:00:00+01:00	GWh/d	130	0	130	Planned Outage	Vortisep	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_004	Dismissed	Planned	Withdrawal unavailability	2022-06-27T09:41:40+01:00	2022-07-01T05:00:00+01:00	2022-07-28T18:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_003	Dismissed	Planned	Withdrawal unavailability	2022-02-17T10:37:49+00:00	2022-07-01T05:00:00+01:00	2022-07-25T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_002	Dismissed	Planned	Withdrawal unavailability	2020-07-28T14:39:15+01:00	2022-07-01T05:00:00+01:00	2022-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000490_001	Dismissed	Planned	Withdrawal unavailability	2020-07-11T21:47:54+01:00	2022-07-01T05:00:00+01:00	2022-07-08T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000680_004	Inactive	Planned	Storage unavailability	2022-07-31T12:28:33+01:00	2022-07-31T05:00:00+01:00	2022-07-31T12:30:00+01:00	TWh	0.39611	2.0888047	2.4849147	Planned Outage		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000680_003	Dismissed	Planned	Storage unavailability	2022-07-30T22:37:19+01:00	2022-07-31T05:00:00+01:00	2022-07-31T17:00:00+01:00	TWh	0.39611	2.0888047	2.4849147	Planned Outage		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.