SDAC Communication note

07th February 2020: The Day-ahead Joint Steering Committee (JSC) initiated an in-depth investigation of the partial decoupling on the 4th of February

During the market coupling process on 4th February a technical issue was experienced that led to a partial decoupling of Nord Pool’s CWE order book and the Kontek (DK2-DE), the Baltic (SE4-DE) and the COBRA (DK1-NL) interconnectors.

The incident was caused by a technical issue at Nord Pool and was not caused by the common market coupling algorithm. The issue could not be fixed within the time allocated by the MRC procedures and at 12:43 CET the partial decoupling of Nord Pool’s CWE order book was declared and shadow auctions were triggered for the impacted interconnectors. The final market coupling results were published at 13:55 CET. The common coupling system worked as expected and ensured the coupling of the remaining part of MRC.

The JSC has initiated an in-depth investigation to identify lessons learned to mitigate the risk of similar incidents in the future.