Last update at: 2023-11-28T13:00:00+00:00

**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/)

Filter Options

Date of event:

From date:

To date:

More filtering options (optional)

	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_000000000000000000803_002	Inactive	Planned	Injection unavailability	2023-10-10T15:41:40+01:00	2023-10-10T08:00:00+01:00	2023-10-10T15:41:00+01:00	GWh/d	30	0	30	Planned Outage	Injection - USM Validations(Day 2)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000803_001	Dismissed	Planned	Injection unavailability	2023-09-05T09:57:41+01:00	2023-10-10T08:00:00+01:00	2023-10-10T17:00:00+01:00	GWh/d	30	0	30	Planned Outage	Injection - USM Validations(Day 2)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000802_002	Inactive	Planned	Withdrawal unavailability	2023-10-09T16:28:31+01:00	2023-10-09T08:00:00+01:00	2023-10-09T16:25:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000802_001	Dismissed	Planned	Withdrawal unavailability	2023-09-05T09:55:24+01:00	2023-10-09T08:00:00+01:00	2023-10-09T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Withdrawal - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000801_002	Inactive	Planned	Injection unavailability	2023-10-09T16:27:06+01:00	2023-10-09T08:00:00+01:00	2023-10-09T16:25:00+01:00	GWh/d	30	0	30	Planned Outage	Injection - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000801_001	Dismissed	Planned	Injection unavailability	2023-09-05T09:53:56+01:00	2023-10-09T08:00:00+01:00	2023-10-09T17:00:00+01:00	GWh/d	30	0	30	Planned Outage	Injection - USM Validations(Day 1)	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000816_003	Inactive	Planned	Withdrawal unavailability	2023-10-06T09:02:31+01:00	2023-10-03T17:00:00+01:00	2023-10-06T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000816_002	Dismissed	Planned	Withdrawal unavailability	2023-10-04T11:03:34+01:00	2023-10-03T17:00:00+01:00	2023-10-06T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000816_001	Dismissed	Planned	Withdrawal unavailability	2023-10-03T16:35:43+01:00	2023-10-03T17:00:00+01:00	2023-10-05T08:00:00+01:00	GWh/d	121.5	220.8	342.3	Planned Outage	Production T1	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000815_003	Inactive	Planned	Storage unavailability	2023-10-05T15:50:35+01:00	2023-10-03T16:00:00+01:00	2023-10-05T15:45:00+01:00	TWh	0.2383	3.2303447	3.4686447	Planned Outage	Cavity 2 SSSV	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000815_002	Dismissed	Planned	Storage unavailability	2023-10-04T15:53:28+01:00	2023-10-03T16:00:00+01:00	2023-10-05T16:00:00+01:00	TWh	0.2383	3.2303447	3.4686447	Planned Outage	Cavity 2 SSSV	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000815_001	Dismissed	Planned	Storage unavailability	2023-10-03T16:01:59+01:00	2023-10-03T16:00:00+01:00	2023-10-04T16:00:00+01:00	TWh	0.2383	3.2303447	3.4686447	Planned Outage	Cavity 2 SSSV	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000814_002	Inactive	Planned	Injection unavailability	2023-10-04T10:57:14+01:00	2023-10-04T09:00:00+01:00	2023-10-04T10:50:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000814_001	Dismissed	Planned	Injection unavailability	2023-09-29T15:39:05+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	30	0	30	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000812_002	Inactive	Planned	Withdrawal unavailability	2023-10-04T10:56:18+01:00	2023-10-04T09:00:00+01:00	2023-10-04T10:50:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000812_001	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:35:27+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000813_002	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:36:35+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000813_001	Dismissed	Planned	Withdrawal unavailability	2023-09-29T15:35:48+01:00	2023-10-04T09:00:00+01:00	2023-10-04T11:00:00+01:00	GWh/d	130	0	130	Planned Outage		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000800_002	Inactive	Planned	Withdrawal unavailability	2023-09-27T18:02:32+01:00	2023-09-27T08:00:00+01:00	2023-09-27T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Gas Analytical Validations	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000800_001	Dismissed	Planned	Withdrawal unavailability	2023-09-05T09:51:43+01:00	2023-09-27T08:00:00+01:00	2023-09-27T17:00:00+01:00	GWh/d	130	0	130	Planned Outage	Gas Analytical Validations	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000811_002	Inactive	Unplanned	Injection unavailability	2023-09-20T15:38:25+01:00	2023-09-20T08:06:00+01:00	2023-09-20T15:38:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000811_001	Dismissed	Unplanned	Injection unavailability	2023-09-20T08:14:14+01:00	2023-09-20T08:06:00+01:00	2023-09-20T18:00:00+01:00	GWh/d	111.02	200.54	311.56	Failure	Compressor 2	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000799_002	Inactive	Planned	Storage unavailability	2023-09-17T20:02:32+01:00	2023-09-14T05:00:00+01:00	2023-09-17T19:00:00+01:00	TWh	0.3518	2.8103642	3.1621642	Planned Outage	ALD 5 Wellhead Maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000799_001	Dismissed	Planned	Storage unavailability	2023-08-30T15:54:37+01:00	2023-09-14T05:00:00+01:00	2023-09-17T19:00:00+01:00	TWh	0.3518	2.8103642	3.1621642	Planned Outage	ALD 5 Wellhead Maintenance.	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_003	Inactive	Unplanned	Withdrawal unavailability	2023-09-17T16:32:32+01:00	2023-09-09T11:55:00+01:00	2023-09-17T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_002	Dismissed	Unplanned	Withdrawal unavailability	2023-09-17T15:17:46+01:00	2023-09-09T11:55:00+01:00	2023-09-17T15:30:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000808_001	Dismissed	Unplanned	Withdrawal unavailability	2023-09-09T11:53:44+01:00	2023-09-09T11:55:00+01:00	2023-10-15T17:00:00+01:00	GWh/d	121.5	220.8	342.3	Failure	Train 1 HIPPS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000810_002	Inactive	Unplanned	Withdrawal unavailability	2023-09-15T12:34:45+01:00	2023-09-15T09:47:00+01:00	2023-09-15T12:31:00+01:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000810_001	Dismissed	Unplanned	Withdrawal unavailability	2023-09-15T09:51:53+01:00	2023-09-15T09:47:00+01:00	2023-09-15T16:00:00+01:00	GWh/d	130	0	130	Failure		21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000809_002	Inactive	Unplanned	Storage unavailability	2023-09-14T19:02:32+01:00	2023-09-14T10:00:00+01:00	2023-09-14T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 3 WHM + RTS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000809_001	Dismissed	Unplanned	Storage unavailability	2023-09-14T09:01:11+01:00	2023-09-14T10:00:00+01:00	2023-09-14T18:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Ald 3 WHM + RTS	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_005	Inactive	Planned	Storage unavailability	2023-09-14T06:02:32+01:00	2023-09-12T06:00:00+01:00	2023-09-14T05:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_004	Dismissed	Planned	Storage unavailability	2023-09-13T09:51:24+01:00	2023-09-12T06:00:00+01:00	2023-09-14T05:00:00+01:00	TWh	0.4123	2.7498642	3.1621642	Planned Outage	Loss of Ald 3 WHM	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000772_003	Dismissed	Planned	Storage unavailability	2023-08-30T15:28:22+01:00	2023-09-12T06:00:00+01:00	2023-09-22T18:00:00+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_000000000000000000772_002	Dismissed	Planned	Storage unavailability	2023-08-23T09:12:19+01:00	2023-09-10T06:00:00+01:00	2023-09-22T18:00:00+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_000000000000000000772_001	Dismissed	Planned	Storage unavailability	2023-07-05T15:27:29+01:00	2023-09-12T06:00:00+01:00	2023-09-24T18:00:00+01:00	TWh	0.412	2.8872861	3.2992861	Planned Outage	Loss of Ald 3	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000805_002	Inactive	Planned	Storage unavailability	2023-09-12T10:32:11+01:00	2023-09-11T08:00:00+01:00	2023-09-12T18:00:00+01:00	TWh	0.238280125	3.230364575	3.4686447	Planned Outage	Cavity 2	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000805_001	Dismissed	Planned	Storage unavailability	2023-09-07T13:34:25+01:00	2023-09-11T08:00:00+01:00	2023-09-12T18:00:00+01:00	TWh	0.238280125	3.230364575	3.4686447	Planned Outage	Cavity 2	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_003	Inactive	Unplanned	Withdrawal unavailability	2023-09-09T11:43:54+01:00	2023-09-08T19:20:00+01:00	2023-09-09T11:45:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_002	Dismissed	Unplanned	Withdrawal unavailability	2023-09-08T22:03:47+01:00	2023-09-08T19:20:00+01:00	2023-09-09T17:00:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000807_001	Dismissed	Unplanned	Withdrawal unavailability	2023-09-08T20:18:24+01:00	2023-09-08T19:20:00+01:00	2023-09-09T05:00:00+01:00	GWh/d	342.3	0	342.3	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_003	Inactive	Unplanned	Injection unavailability	2023-09-09T11:43:38+01:00	2023-09-08T19:20:00+01:00	2023-09-09T11:45:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_002	Dismissed	Unplanned	Injection unavailability	2023-09-08T22:03:00+01:00	2023-09-08T19:20:00+01:00	2023-09-09T17:00:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Aldbrough	ALD_000000000000000000806_001	Dismissed	Unplanned	Injection unavailability	2023-09-08T20:17:03+01:00	2023-09-08T19:20:00+01:00	2023-09-09T05:00:00+01:00	GWh/d	311.56	0	311.56	Failure	HIPPS Failure	21YGB-UKGASGRIDW	55WALDBOROUGH00H	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000796_003	Inactive	Unplanned	Storage unavailability	2023-09-06T13:31:43+01:00	2023-08-25T08:00:00+01:00	2023-09-06T13:32:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000796_002	Dismissed	Unplanned	Storage unavailability	2023-08-31T09:36:10+01:00	2023-08-25T08:00:00+01:00	2023-09-06T18:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000796_001	Dismissed	Unplanned	Storage unavailability	2023-08-25T08:13:30+01:00	2023-08-25T08:00:00+01:00	2023-08-31T18:00:00+01:00	TWh	0.317415066	3.151229634	3.4686447	Failure	Cavity 7	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000786_004	Inactive	Planned	Storage unavailability	2023-09-05T16:33:08+01:00	2023-08-25T05:00:00+01:00	2023-09-05T16:32:00+01:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Intervention works	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000786_003	Dismissed	Planned	Storage unavailability	2023-08-17T14:47:49+01:00	2023-08-25T05:00:00+01:00	2023-09-09T18:00:00+01:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Intervention works	21YGB-UKGASGRIDW	55WATWICK-SSE00J	SSE Hornsea Ltd	A0001033U.UK
Atwick	ATW_000000000000000000786_002	Dismissed	Planned	Storage unavailability	2023-08-17T14:02:38+01:00	2023-08-25T05:00:00+01:00	2023-09-05T18:00:00+01:00	TWh	0.390799835	3.077844865	3.4686447	Planned Outage	Cavity 3 Intervention works	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.