Revised Weekly Constraints Update

Affected Period

Status
Closed

Category
Balancing

Run Type

Created

Last Updated

Dear Market Participant,

EirGrid and SONI have published a revised weekly constraints update for the current Week 12 2025. 

The revision note:

As of 23:00 18/03/2025, the following NI TCGs have been temporarily updated for Security of Supply:

  • S_NBMIN_MINNIU has been updated to require a minimum of 2 units at all times and to remove B10.

As of 23:00 18/03/2025, the following System Wide TCGs have been added temporarily for transient and dynamic stability:

  • S_NSMIN_MINITRL7 to ensure 7 units are running all-island.
  • NI_FLO to manage tie-line flows.

The weekly constraints update is published every Friday evening on the General Publications page of SEM-O.com. 

Kind regards,

SEMO Team