SDAC Fallback Manual
23 September 2025
Publication of the SDAC Fallback Manual
The Single Day-Ahead Coupling (SDAC) Fallback Manual is now available and can be accessed on the NEMO Committee and ENTSO-E websites.
Developed jointly by Nominated Electricity Market Operators (NEMOs) and Transmission System Operators (TSOs), the manual provides detailed guidance on procedures to be applied in the event of a SDAC partial or full decoupling.
It sets out key elements including communication channels, fallback processes, and the updated operational timelines associated with the introduction of the 15-minute Market Time Unit.
The SDAC Fallback Manual will be applicable as of 30 September and is intended to support market participants in ensuring preparedness and continuity in exceptional circumstances.