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
< 1 2 3 4 5 >
Atwick	ATW_000000000000000000492_003	Inactive	Planned	Injection unavailability	2023-07-17T05:46:11+01:00	2023-06-30T05:00:00+01:00	2023-07-17T05:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000493_004	Inactive	Planned	Withdrawal unavailability	2023-07-17T05:45:47+01:00	2023-06-30T05:00:00+01:00	2023-07-17T05:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000750_002	Inactive	Planned	Withdrawal unavailability	2023-07-17T05:45:10+01:00	2027-07-01T05:00:00+01:00	2027-07-15T05:00:00+01:00	GWh/d	130	0	130	Planned Outage	Annual Full Site Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000751_002	Inactive	Planned	Injection unavailability	2023-07-17T05:44:50+01:00	2027-07-01T05:00:00+01:00	2027-07-15T05:00:00+01:00	GWh/d	30	0	30	Planned Outage	Annual Full Site Outage	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000779_002	Inactive	Unplanned	Injection unavailability	2023-07-07T15:13:37+01:00	2023-07-07T10:00:00+01:00	2023-07-07T15:10:00+01:00	GWh/d	111.02	200.54	311.56	Failure	GC-2 VSDS fault investigation.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000777_003	Inactive	Unplanned	Injection unavailability	2023-07-06T12:52:30+01:00	2023-07-06T02:25:00+01:00	2023-07-06T12:50:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Comp 2 Unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000778_002	Inactive	Unplanned	Storage unavailability	2023-07-06T09:09:19+01:00	2023-07-06T02:25:00+01:00	2023-07-06T09:09:00+01:00	TWh	0.8395	2.4597861	3.2992861	Failure	Ald 7 Panel inaccessible	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000776_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:31:09+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000775_002	Inactive	Unplanned	Injection unavailability	2023-07-06T02:30:20+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	311.56	0	311.56	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000774_002	Inactive	Unplanned	Withdrawal unavailability	2023-07-06T02:29:53+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000773_002	Inactive	Unplanned	Storage unavailability	2023-07-06T02:29:10+01:00	2023-07-05T23:01:00+01:00	2023-07-06T02:25:00+01:00	TWh	3.2992861	0	3.2992861	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000771_004	Inactive	Unplanned	Withdrawal unavailability	2023-06-30T05:14:44+01:00	2023-06-28T18:55:00+01:00	2023-06-30T05:00:00+01:00	GWh/d	130	0	130	Failure	Withdrawal plant	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000759_002	Inactive	Planned	Storage unavailability	2023-06-29T19:02:32+01:00	2023-06-28T18:00:00+01:00	2023-06-29T18:00:00+01:00	TWh	0.483344926	2.985299774	3.4686447	Planned Outage	Cavity 6 Wellhead Panel Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000767_002	Inactive	Planned	Withdrawal unavailability	2023-06-29T08:29:51+01:00	2023-06-24T07:00:00+01:00	2023-06-29T08:28:00+01:00	GWh/d	100	30	130	Planned Outage	Phase 6	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000758_002	Inactive	Planned	Storage unavailability	2023-06-28T19:02:32+01:00	2023-06-27T18:00:00+01:00	2023-06-28T18:00:00+01:00	TWh	0.665322552	2.803322148	3.4686447	Planned Outage	Cavity 5 Wellhead panel maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000770_002	Inactive	Unplanned	Withdrawal unavailability	2023-06-28T14:05:55+01:00	2023-06-28T11:46:00+01:00	2023-06-29T14:05:00+01:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000769_002	Inactive	Unplanned	Withdrawal unavailability	2023-06-28T10:40:27+01:00	2023-06-27T21:10:00+01:00	2023-06-28T10:40:00+01:00	GWh/d	130	0	130	Failure	full site out	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000763_005	Inactive	Unplanned	Withdrawal unavailability	2023-06-28T09:08:32+01:00	2023-06-06T09:45:00+01:00	2023-06-28T09:10:00+01:00	GWh/d	253.9	88.4	342.3	Failure	Reduction in max flow.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000475_006	Inactive	Planned	Withdrawal unavailability	2023-06-28T09:07:19+01:00	2023-06-03T05:00:00+01:00	2023-06-28T09:07:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 2 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000761_005	Inactive	Planned	Storage unavailability	2023-06-27T19:02:33+01:00	2023-06-21T09:00:00+01:00	2023-06-27T18:00:00+01:00	TWh	0.468711066	2.999933634	3.4686447	Planned Outage	Cavity 9 Annual Wellhead Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000757_003	Inactive	Planned	Storage unavailability	2023-06-27T19:02:33+01:00	2023-06-26T18:00:00+01:00	2023-06-27T18:00:00+01:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Wellhead Panel Maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000768_003	Inactive	Unplanned	Storage unavailability	2023-06-27T19:02:33+01:00	2023-06-24T07:30:00+01:00	2023-06-27T18:00:00+01:00	TWh	0.48312084	2.5168128	3.4686447	Failure	Cavity 8	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000756_002	Inactive	Planned	Storage unavailability	2023-06-26T19:02:32+01:00	2023-06-26T05:00:00+01:00	2023-06-26T18:00:00+01:00	TWh	0.421650307	3.046994393	3.4686447	Planned Outage	Cavity 1 Wellhead Panel maintenance	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000766_002	Inactive	Unplanned	Storage unavailability	2023-06-23T19:02:32+01:00	2023-06-21T07:53:00+01:00	2023-06-23T18:00:00+01:00	TWh	0.48312084	2.98552386	3.4686447	Failure	Cavity 8	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000760_004	Inactive	Planned	Storage unavailability	2023-06-21T11:16:09+01:00	2023-06-02T09:00:00+01:00	2023-06-21T11:15:00+01:00	TWh	0.238280125	3.230364575	3.4686447	Planned Outage	Cavity 2 Wellhead maintenance and intervention works.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000661_007	Inactive	Unplanned	Storage unavailability	2023-06-16T10:22:16+01:00	2022-03-22T14:15:00+00:00	2023-06-16T10:20:00+01:00	TWh	0.06761	2.3882077	3.2992861	Failure	Cavern 4 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000765_002	Inactive	Unplanned	Storage unavailability	2023-06-08T16:55:19+01:00	2023-06-07T16:00:00+01:00	2023-06-08T16:40:00+01:00	TWh	0.555695	2.9129497	3.4686447	Failure	Cavity 7 wellhead panel	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000764_002	Inactive	Unplanned	Withdrawal unavailability	2023-06-07T15:19:59+01:00	2023-06-07T11:50:00+01:00	2023-06-07T15:00:00+01:00	GWh/d	130	0	130	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000762_002	Inactive	Unplanned	Storage unavailability	2023-06-06T15:36:51+01:00	2023-06-05T16:00:00+01:00	2023-06-06T15:25:00+01:00	TWh	0.3908	2.8395647	3.4686447	Failure	Atwick 3 WHP N2 Leak	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000755_003	Inactive	Unplanned	Storage unavailability	2023-05-30T15:37:39+01:00	2023-05-27T13:36:00+01:00	2023-05-30T15:35:00+01:00	TWh	0.3908	3.0778447	3.4686447	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000753_002	Inactive	Unplanned	Storage unavailability	2023-05-26T18:16:40+01:00	2023-05-21T18:00:00+01:00	2023-05-26T18:00:00+01:00	TWh	0.934	2.3677895	3.3017895	Failure	Wells 1 & 9 unavailable	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000754_002	Inactive	Unplanned	Storage unavailability	2023-05-25T14:47:07+01:00	2023-05-24T22:35:00+01:00	2023-05-25T14:45:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000727_002	Inactive	Planned	Injection unavailability	2023-05-23T19:02:32+01:00	2023-05-21T18:00:00+01:00	2023-05-23T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000473_005	Inactive	Planned	Withdrawal unavailability	2023-05-22T19:02:32+01:00	2023-05-07T05:00:00+01:00	2023-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000474_003	Inactive	Planned	Withdrawal unavailability	2023-05-22T19:02:32+01:00	2023-05-01T05:00:00+01:00	2023-05-22T18:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Prod Train 1 Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000472_003	Inactive	Planned	Injection unavailability	2023-05-21T19:02:32+01:00	2023-05-07T05:00:00+01:00	2023-05-21T18:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Full Site Outage	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000726_002	Inactive	Planned	Injection unavailability	2023-05-07T06:02:32+01:00	2023-05-06T05:00:00+01:00	2023-05-07T05:00:00+01:00	GWh/d	111.02	200.54	311.56	Planned Outage	Gas compressor 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000742_002	Inactive	Planned	Storage unavailability	2023-05-07T06:02:32+01:00	2023-04-27T05:00:00+01:00	2023-05-07T05:00:00+01:00	TWh	0.89	2.4117895	3.3017895	Planned Outage	Ald 8 Maintenance and sonar survey	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000743_002	Inactive	Planned	Storage unavailability	2023-05-07T06:02:32+01:00	2023-04-30T05:00:00+01:00	2023-05-07T05:00:00+01:00	TWh	0.89	2.4117895	3.3017895	Planned Outage	Ald 2 maintenance and sonar survey	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000741_002	Inactive	Planned	Storage unavailability	2023-04-26T19:02:32+01:00	2023-04-17T05:00:00+01:00	2023-04-26T18:00:00+01:00	TWh	1.29	2.0117895	3.3017895	Planned Outage	Ald 1 Maintenance and Sonar Survey	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000745_002	Inactive	Planned	Withdrawal unavailability	2023-04-26T15:02:32+01:00	2023-04-26T10:00:00+01:00	2023-04-26T14:00:00+01:00	GWh/d	342.3	0	342.3	Planned Outage	Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000744_002	Inactive	Planned	Injection unavailability	2023-04-26T15:02:32+01:00	2023-04-26T10:00:00+01:00	2023-04-26T14:00:00+01:00	GWh/d	311.56	0	311.56	Planned Outage	Testing	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000740_002	Inactive	Unplanned	Withdrawal unavailability	2023-04-09T23:04:07+01:00	2023-04-09T20:58:00+01:00	2023-04-09T23:00:00+01:00	GWh/d	342.3	0	342.3	Failure		21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000734_007	Inactive	Planned	Injection unavailability	2023-03-31T11:56:18+01:00	2023-03-30T08:00:00+01:00	2023-03-31T11:55:00+01:00	GWh/d	30	0	30	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000735_007	Inactive	Planned	Withdrawal unavailability	2023-03-31T11:55:42+01:00	2023-03-30T08:00:00+01:00	2023-03-31T11:55:00+01:00	GWh/d	130	0	130	Planned Outage	USM	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000737_003	Inactive	Planned	Storage unavailability	2023-03-29T13:02:32+01:00	2023-03-28T11:00:00+01:00	2023-03-29T12:00:00+01:00	TWh	0.75242	2.5493695	3.3017895	Planned Outage	Block placement	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000732_007	Inactive	Unplanned	Injection unavailability	2023-02-23T14:17:52+00:00	2023-02-10T09:49:00+00:00	2023-02-23T14:16:00+00:00	GWh/d	30	0	30	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000731_007	Inactive	Unplanned	Withdrawal unavailability	2023-02-23T14:17:05+00:00	2023-02-10T09:49:00+00:00	2023-02-23T14:16:00+00:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000730_002	Inactive	Planned	Withdrawal unavailability	2023-02-08T13:02:32+00:00	2023-02-08T10:00:00+00:00	2023-02-08T12:00:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 7.	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000729_002	Inactive	Planned	Withdrawal unavailability	2023-02-06T15:45:38+00:00	2023-02-06T08:00:00+00:00	2023-02-06T15:42:00+00:00	GWh/d	50	80	130	Planned Outage	Stream 8	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.