Balancing Market Outage – Wednesday 12th November 2025
Affected Period
12/11/2025
Status
Closed
Category
Balancing
Run Type
N/A
Created
Last Updated
Updated Message 13/11/2025 01:40
Dear Market Participant,
The outage to Imbalance Pricing is now complete.
We would like to take this opportunity to thank you for your cooperation with today’s outages.
Kind regards,
SEMO Team
Updated Message 12/11/2025 23:00
Dear Market Participant,
Please note the outage to Imbalance Pricing will now take place.
Kind regards,
SEMO Team
Updated Message 12/11/2025 19:45
Dear Market Participant,
Please note, the Balancing Market outage is now complete and Imbalance Pricing has been restored.
As previously communicated, a further outage to Imbalance Pricing is required this evening between 23:00 and 02:00.
Kind regards,
SEMO Team
Updated Message 12/11/2025 18:45
Dear Market Participant,
The Balancing Market Interface is now available.
ESPS units have been converted to Battery Storage fuel type; this change is effective from 23:00 this evening. ESPS units can now submit data as a Battery Storage fuel type, for this period.
As a reminder, there will be a requirement for battery participants to re-declare availability for charging (MNMW) via EDIL. Each ESPS unit operator will receive a message via the EDIL interface from the Control Centres indicating when this should be done. This will be post 23:00 on this evening.
Imbalance Pricing will remain offline, an update will be communicated when the service has been restored.
Kind regards,
SEMO Team
Updated Message 12/11/2025 18:00
Dear Market Participant,
Please be advised that the outage is still ongoing.
A further communication will be issued when the Balancing Market Interface is available.
Kid regards,
SEMO Team
Updated Message 12/11/2025 14:00
Dear Market Participant,
Please be advised that the outage will now commence.
Kind regards,
SEMO Team
Updated Message 12/11/2025 12:05
Dear Market Participant,
This is a gentle reminder that this afternoon’s outage scheduled for 14:00 to 18:00 is set to proceed as planned.
During this time the Balancing Market Interface will be unavailable, and Imbalance Pricing will also be offline.
Kind regards,
SEMO Team
Original Message
Dear Market Participant,
We would like to provide Participants with notification of a Balancing Market outage next week on Wednesday the 12th of November 2025, taking place between 14:00 and 18:00.
Following on from the scheduled deployment of Release N, this outage is to facilitate the conversion of Energy Storage Power Systems (ESPS) from Multi-fuel to Battery Storage fuel type, as part of the Scheduling and Dispatch SDP_02 initiative. During this time the Balancing Market Interface will be unavailable and Imbalance Pricing will also be offline. The changes will take effect in the market systems from 23:00 on 12th November 2025.
Note, a further outage to Imbalance Pricing is required between 23:00 and 02:00 in order to complete the cutover activities.
A notification will be sent once the outage begins, and again upon completion of the outage.
Kind regards,
SEMO Team