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

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	Remarks	Balancing Zone	Affected Asset or Unit EIC Code	Market Participant	Market Participant Code
< 2 3 4 5 6 >
Atwick	ATW_000000000000000000724_002	Inactive	Planned	Storage unavailability	2023-01-27T18:55:31+00:00	2023-01-27T06:00:00+00:00	2023-01-27T18:55:00+00:00	TWh	0.665322552	2.803322148	3.4686447	Planned Outage	Cavity 5 Six Monthly Maintenace	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
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_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_000000000000000000728_002	Inactive	Unplanned	Withdrawal unavailability	2023-01-18T16:01:03+00:00	2023-01-18T11:10:00+00:00	2023-01-18T16:00:00+00:00	GWh/d	39	91	130	Failure		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
Aldbrough	ALD_000000000000000000725_002	Inactive	Unplanned	Injection unavailability	2023-01-12T14:46:40+00:00	2023-01-12T09:30:00+00:00	2023-01-12T14:45:00+00:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	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_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_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
Atwick	ATW_000000000000000000710_008	Inactive	Unplanned	Withdrawal unavailability	2022-12-23T13:18:45+00:00	2022-12-19T09:32:00+00:00	2022-12-23T13:18:00+00:00	GWh/d	100	30	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000717_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-23T12:14:34+00:00	2022-12-22T20:10:00+00:00	2022-12-23T12:00:00+00:00	GWh/d	121.5	220.8	342.3	Failure	Prod Train 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000716_001	Inactive	Unplanned	Withdrawal unavailability	2022-12-22T15:53:17+00:00	2022-12-08T14:07:00+00:00	2022-12-08T16:15:00+00:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000715_001	Inactive	Unplanned	Injection unavailability	2022-12-22T15:50:55+00:00	2022-12-08T14:07:00+00:00	2022-12-08T16:15:00+00:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000713_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-16T12:38:56+00:00	2022-12-16T07:15:00+00:00	2022-12-16T12:38:00+00:00	GWh/d	80	50	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000712_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-16T00:50:32+00:00	2022-12-16T00:37:00+00:00	2022-12-16T00:52:00+00:00	GWh/d	342.3	0	342.3	Failure	Plant Trip	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000711_002	Inactive	Unplanned	Withdrawal unavailability	2022-12-14T09:14:10+00:00	2022-12-14T09:07:00+00:00	2022-12-25T16:00:00+00:00	GWh/d	50	80	130	Failure	double entry	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000709_002	Inactive	Unplanned	Storage unavailability	2022-12-12T12:01:44+00:00	2022-12-12T04:00:00+00:00	2022-12-12T16:00:00+00:00	TWh	0.483121	2.9855237	3.4686447	Failure	Cavity 8	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000701_004	Inactive	Unplanned	Storage unavailability	2022-12-12T00:17:37+00:00	2022-11-07T10:00:00+00:00	2022-12-11T23:10:00+00:00	TWh	0.42	2.8817895	3.3017895	Failure	Ald 1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000708_004	Inactive	Unplanned	Withdrawal unavailability	2022-12-11T07:48:21+00:00	2022-12-10T03:17:00+00:00	2022-12-11T07:45:00+00:00	GWh/d	130	0	130	Failure		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_000000000000000000707_003	Inactive	Unplanned	Injection unavailability	2022-11-27T09:55:45+00:00	2022-11-26T23:18:00+00:00	2022-11-27T09:50:00+00:00	GWh/d	111.02	200.54	311.56	Failure	Comp 3	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_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_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_000000000000000000700_003	Inactive	Unplanned	Storage unavailability	2022-11-04T14:39:29+00:00	2022-10-24T16:00:00+01:00	2022-11-04T14:35:00+00:00	TWh	0.89	2.0553019	3.3017895	Failure		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_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_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_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
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_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_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_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
Aldbrough	ALD_000000000000000000699_002	Inactive	Unplanned	Injection unavailability	2022-10-19T15:10:48+01:00	2022-10-19T11:10:00+01:00	2022-10-19T15:10:00+01:00	GWh/d	100.27	211.29	311.56	Failure	GC-2 booster pump failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000697_003	Inactive	Unplanned	Storage unavailability	2022-10-11T17:19:30+01:00	2022-10-07T16:00:00+01:00	2022-10-11T17:19:00+01:00	TWh	0.665322552	2.803322148	3.4686447	Failure	.	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
Aldbrough	ALD_000000000000000000694_002	Inactive	Unplanned	Injection unavailability	2022-10-06T15:33:31+01:00	2022-10-05T10:30:00+01:00	2022-10-06T15:30:00+01:00	GWh/d	111.02	200.54	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000695_002	Inactive	Unplanned	Withdrawal unavailability	2022-10-05T16:52:04+01:00	2022-10-05T10:15:00+01:00	2022-10-05T16:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	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
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_000000000000000000692_002	Inactive	Unplanned	Injection unavailability	2022-09-27T08:36:10+01:00	2022-09-27T08:00:00+01:00	2022-09-27T08:35:00+01:00	GWh/d	30	0	30	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
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_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_000000000000000000682_003	Inactive	Unplanned	Storage unavailability	2022-09-06T06:01:53+01:00	2022-08-17T12:00:00+01:00	2022-09-06T05:00:00+01:00	TWh	0.424	2.0609147	2.4849147	Failure	Ald 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
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_000000000000000000681_004	Inactive	Unplanned	Storage unavailability	2022-08-02T22:02:33+01:00	2022-08-01T19:34:00+01:00	2022-08-02T21:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000640_003	Inactive	Unplanned	Withdrawal unavailability	2022-08-01T06:02:33+01:00	2022-01-22T05:00:00+00:00	2022-08-01T05:00:00+01:00	GWh/d	30	100	130	Failure	This capacity will be available for limited durations but may not always be responsive to price signals	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

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.