During the market coupling process on October 28, a technical issue led to a partial decoupling. Interconnectors that experienced issues leading to decoupling from the SDAC process were GR-BG and GR-IT.
The incident was caused by a technical issue at HEnEx’s local trading system. HEnEx reported that experienced a severe technical issue at its local trading system impending the validation process of submitted orders in DAM relevant to the day-light saving time additional MTU for delivery day of 29 October.
The issue could not be fixed within the time allocated by the SDAC procedures and partial decoupling was declared.
The final market coupling results for the remaining coupled parties were published at 14:05 CET. The common coupling system worked as expected and ensured the coupling of the remaining part of SDAC.
The Market Coupling Steering Committee (MCSC) has initiated an in-depth investigation. A decoupling report summarizing the outcome of the investigation and potential lessons learned is expected to be published within a month.