Last update at: 2024-10-03T19:30:00+01:00

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Event Status

Message ID	Event Status	Publication Date	Event Start	Event Stop	Remarks	Market Participant	Market Participant Code
GSO_000000000000000008539_002	Active	2024-05-22T13:21:36+01:00	2026-04-10T05:00:00+01:00	2027-04-10T05:00:00+01:00	Cavern A1 will be removed from service indefinitely. This is the current information known and may change as the project develops.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000008539_001	Dismissed	2023-12-13T09:57:39+00:00	2025-01-01T05:00:00+00:00	2026-01-01T05:00:00+00:00	Cavern A1 will be removed from service indefinitely. This is the current information known and may change as the project develops.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000008204_003	Inactive	2024-10-03T19:02:33+01:00	2023-06-16T10:20:00+01:00	2024-10-03T18:00:00+01:00	Max Tech volume edited to account for cavern 4 on long term outage	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000008204_002	Dismissed	2023-08-23T09:25:47+01:00	2023-06-16T10:20:00+01:00	2024-10-03T18:00:00+01:00	Max Tech volume edited to account for cavern 4 on long term outage	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000008204_001	Dismissed	2023-06-30T14:18:39+01:00	2023-06-16T10:20:00+01:00	2024-06-30T14:17:00+01:00	Max Tech volume edited to account for cavern 4 on long term outage	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000022_002	Inactive	2022-05-17T14:15:22+01:00	2019-05-15T15:42:00+01:00	2022-05-17T14:14:00+01:00	0.20416Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 3.164Twh. Installed Capacity 3.257392Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000022_001	Dismissed	2019-05-15T16:05:11+01:00	2019-05-15T15:42:00+01:00		0.20416Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 3.164Twh. Installed Capacity 3.257392Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000021_006	Inactive	2022-08-24T16:48:05+01:00	2017-05-02T09:23:00+01:00	2022-08-24T16:45:00+01:00	0.381374Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.165222Twh. Installed Capacity 2.917109Twh. Long term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000021_005	Dismissed	2022-08-17T09:40:32+01:00	2017-05-02T09:23:00+01:00	2022-08-24T18:00:00+01:00	0.381374Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.165222Twh. Installed Capacity 2.917109Twh. Long term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000021_004	Dismissed	2021-10-05T15:35:48+01:00	2017-05-02T09:23:00+01:00	2022-09-09T18:00:00+01:00	0.381374Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.165222Twh. Installed Capacity 2.917109Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000021_003	Dismissed	2021-09-08T11:34:07+01:00	2017-05-02T09:23:00+01:00	2022-09-23T05:00:00+01:00	0.381374Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.165222Twh. Installed Capacity 2.917109Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000021_002	Dismissed	2020-05-13T11:27:43+01:00	2017-05-02T09:23:00+01:00	2021-11-01T05:00:00+00:00	0.381374Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.165222Twh. Installed Capacity 2.917109Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000005_002	Dismissed	2017-05-02T09:45:23+01:00	2017-05-02T09:45:00+01:00		0.20416Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 2.6234Twh. Installed Capacity 3.257392Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000005_001	Dismissed	2016-07-09T15:20:26+01:00	2016-05-01T05:00:00+01:00		0.20416Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 2.6520Twh. Installed Capacity 3.285972136Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000004_002	Dismissed	2017-05-02T09:44:32+01:00	2017-05-02T09:43:00+01:00		0.42984Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 2.82756Twh. Installed Capacity 3.257392Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000004_001	Dismissed	2016-07-09T15:19:13+01:00	2016-05-01T05:00:00+01:00		0.42984Twh Atwick Storage Unavailability. Maximum Technical Capacity during this period 2.6520Twh. Installed Capacity 3.285972136Twh. Long term outage programme. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000003_002	Inactive	2022-05-17T15:42:03+01:00	2015-05-01T06:00:00+01:00	2022-05-17T15:41:00+01:00	65Gwh Atwick Withdrawal Unavailability. Maximum Technical Capacity during this period 130Gwh. Installed Capacity 195Gwh. Mothballed Plant. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000003_001	Dismissed	2016-07-09T15:12:11+01:00	2015-05-01T06:00:00+01:00		65Gwh Atwick Withdrawal Unavailability. Maximum Technical Capacity during this period 130Gwh. Installed Capacity 195Gwh. Mothballed Plant. Return date unknown	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_012	Inactive	2022-10-24T20:08:15+01:00	2017-02-05T09:20:00+00:00	2022-10-26T20:08:00+01:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_011	Dismissed	2022-09-30T11:48:19+01:00	2017-02-05T09:20:00+00:00	2022-10-26T18:00:00+01:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_010	Dismissed	2021-10-05T15:37:56+01:00	2017-02-05T09:20:00+00:00	2022-10-12T18:00:00+01:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_009	Dismissed	2021-09-08T11:33:17+01:00	2017-02-05T09:20:00+00:00	2022-11-04T05:00:00+00:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_008	Dismissed	2021-09-08T11:18:50+01:00	2017-02-05T09:20:00+00:00	2022-04-11T05:00:00+01:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	SSE Hornsea Ltd	A0001033U.UK
GSO_000000000000000000002_007	Dismissed	2020-05-13T11:28:07+01:00	2017-05-02T09:20:00+01:00	2021-11-01T05:00:00+00:00	0.370513Twh Aldbrough Storage Unavailability. Maximum Technical Capacity during this period 2.546595Twh. Installed Capacity 2.917109Twh. Long Term outage programme.	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.