Last update at: 2024-07-26T15:00:00+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
< 1 2 3 4 5 >
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
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_000000000000000000948_001	Active	Unplanned	Storage unavailability	2024-07-26T14:58:11+01:00	2024-07-26T14:50:00+01:00	2024-08-02T18:00:00+01:00	TWh	0.339	2.8231642	3.1621642	Failure	Ald 5 outage.	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
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_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
Aldbrough	ALD_000000000000000000941_002	Inactive	Planned	Storage unavailability	2024-06-26T15:02:32+01:00	2024-06-26T05:00:00+01:00	2024-06-26T14:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	A3 block move.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000941_001	Dismissed	Planned	Storage unavailability	2024-06-21T10:47:25+01:00	2024-06-26T05:00:00+01:00	2024-06-26T14:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	A3 block move.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000932_002	Active	Planned	Storage unavailability	2024-06-19T12:08:32+01:00	2026-04-10T05:00:00+01:00	2027-04-10T05:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Ald 1 - AHP	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000932_001	Dismissed	Planned	Storage unavailability	2024-06-13T09:58:53+01:00	2026-04-10T05:00:00+01:00	2027-05-10T05:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Ald 1 - AHP	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000843_002	Dismissed	Planned	Storage unavailability	2024-06-13T15:25:00+01:00	2024-10-01T05:00:00+01:00	2024-12-31T05:00:00+00:00	TWh	0.232	2.9301642	3.1621642	Planned Outage	Cavern 6. Removed from service AHS.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000843_001	Dismissed	Planned	Storage unavailability	2023-11-13T10:05:32+00:00	2024-10-01T05:00:00+01:00	2024-12-31T05:00:00+00:00	TWh	0.232	2.9301642	3.1621642	Planned Outage	Cavern 6. Removed from service AHS.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000842_002	Dismissed	Planned	Storage unavailability	2024-06-12T15:58:36+01:00	2024-07-01T05:00:00+01:00	2024-12-31T05:00:00+00:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Cavern 1. Removed from service AHS.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000842_001	Dismissed	Planned	Storage unavailability	2023-11-13T10:03:43+00:00	2024-07-01T05:00:00+01:00	2024-12-31T05:00:00+00:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Cavern 1. Removed from service AHS.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000866_003	Dismissed	Planned	Storage unavailability	2024-06-12T15:37:41+01:00	2026-04-10T05:00:00+01:00	2027-04-10T05:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Ald 1 - AHP.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000866_002	Dismissed	Planned	Storage unavailability	2024-05-22T13:23:47+01:00	2026-04-10T05:00:00+01:00	2027-04-10T05:00:00+01:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Ald 1 - AHP.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000866_001	Dismissed	Planned	Storage unavailability	2023-12-12T15:46:18+00:00	2025-01-01T05:00:00+00:00	2026-01-01T05:00:00+00:00	TWh	0.412	2.7501642	3.1621642	Planned Outage	Ald 1 - AHP.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000930_002	Inactive	Unplanned	Storage unavailability	2024-06-11T18:29:25+01:00	2024-06-10T18:00:00+01:00	2024-06-11T18:00:00+01:00	TWh	0.412344295	2.749819905	3.1621642	Failure	Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000930_001	Dismissed	Unplanned	Storage unavailability	2024-06-10T20:45:34+01:00	2024-06-10T18:00:00+01:00	2024-06-11T18:00:00+01:00	TWh	0.412344295	2.749819905	3.1621642	Failure	Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_010	Inactive	Unplanned	Storage unavailability	2024-06-10T19:02:32+01:00	2024-03-30T05:00:00+00:00	2024-06-10T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_009	Dismissed	Unplanned	Storage unavailability	2024-06-06T15:13:49+01:00	2024-03-30T05:00:00+00:00	2024-06-10T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_008	Dismissed	Unplanned	Storage unavailability	2024-05-31T11:42:31+01:00	2024-03-30T05:00:00+00:00	2024-06-07T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_007	Dismissed	Unplanned	Storage unavailability	2024-05-14T13:01:17+01:00	2024-03-30T05:00:00+00:00	2024-05-31T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_006	Dismissed	Unplanned	Storage unavailability	2024-04-25T15:49:39+01:00	2024-03-30T05:00:00+00:00	2024-06-08T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_005	Dismissed	Unplanned	Storage unavailability	2024-04-17T13:15:54+01:00	2024-03-30T05:00:00+00:00	2024-06-06T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_004	Dismissed	Unplanned	Storage unavailability	2024-03-08T09:56:28+00:00	2024-03-30T05:00:00+00:00	2024-05-07T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_003	Dismissed	Unplanned	Storage unavailability	2024-03-04T08:15:02+00:00	2024-03-25T05:00:00+00:00	2024-05-09T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_002	Dismissed	Unplanned	Storage unavailability	2024-02-01T12:41:10+00:00	2024-03-30T05:00:00+00:00	2024-05-07T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000794_001	Dismissed	Unplanned	Storage unavailability	2023-08-21T14:43:47+01:00	2024-05-02T05:00:00+01:00	2024-06-11T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000923_002	Inactive	Planned	Storage unavailability	2024-05-10T16:35:01+01:00	2024-05-07T09:00:00+01:00	2024-05-10T16:00:00+01:00	TWh	0.419	2.7431642	3.1621642	Planned Outage	A8 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000923_001	Dismissed	Planned	Storage unavailability	2024-05-07T08:48:52+01:00	2024-05-07T09:00:00+01:00	2024-05-10T18:00:00+01:00	TWh	0.419	2.7431642	3.1621642	Planned Outage	A8 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000922_002	Inactive	Planned	Storage unavailability	2024-04-30T13:18:52+01:00	2024-04-28T00:00:00+01:00	2024-04-30T13:15:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 1 W/H Maint	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000922_001	Dismissed	Planned	Storage unavailability	2024-04-27T14:21:53+01:00	2024-04-28T00:00:00+01:00	2024-04-30T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 1 W/H Maint	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000912_001	Active	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_000000000000000000795_002	Dismissed	Unplanned	Storage unavailability	2024-02-01T12:36:36+00:00	2024-09-02T05:00:00+01:00	2024-10-11T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000795_001	Dismissed	Unplanned	Storage unavailability	2023-08-21T14:49:04+01:00	2024-09-02T05:00:00+01:00	2024-10-11T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000872_003	Inactive	Planned	Storage unavailability	2024-01-03T17:05:43+00:00	2024-01-02T05:00:00+00:00	2024-01-03T17:06:00+00:00	TWh	0.47347	2.6886942	3.1621642	Planned Outage	Ald 9 Pipework shotblast	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000872_002	Dismissed	Planned	Storage unavailability	2024-01-02T10:39:03+00:00	2024-01-02T05:00:00+00:00	2024-01-03T19:00:00+00:00	TWh	0.47347	2.6886942	3.1621642	Planned Outage	Ald 9 Pipework shotblast	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000872_001	Dismissed	Planned	Storage unavailability	2024-01-01T17:00:01+00:00	2024-01-02T05:00:00+00:00	2024-01-03T12:00:00+00:00	TWh	0.47347	2.6886942	3.1621642	Planned Outage	Ald 9 Pipework shotblast	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000867_003	Inactive	Planned	Storage unavailability	2023-12-15T12:51:20+00:00	2023-12-14T05:00:00+00:00	2023-12-15T12:50:00+00:00	TWh	0.855	2.3071642	3.1621642	Planned Outage	A3 and A7 removed from service.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000867_002	Dismissed	Planned	Storage unavailability	2023-12-14T15:17:38+00:00	2023-12-14T05:00:00+00:00	2023-12-15T13:00:00+00:00	TWh	0.855	2.3071642	3.1621642	Planned Outage	A3 and A7 removed from service.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000867_001	Dismissed	Planned	Storage unavailability	2023-12-13T15:44:10+00:00	2023-12-14T05:00:00+00:00	2023-12-14T18:00:00+00:00	TWh	0.855	2.3071642	3.1621642	Planned Outage	A3 and A7 removed from service.	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.