12 September 2025. Following the announcement made on 14 May 2025 regarding the revised go-live date for the 15-minute Market Time Unit (MTU) in the Single Day-Ahead Coupling (SDAC), project parties are pleased to confirm that full readiness has now been successfully achieved. Go-live is therefore scheduled for 30 September 2025 (trading day) for delivery day 1 October 2025.
Comprehensive testing confirms full readiness
A more than a year-long testing campaign for the 15-minute MTU solution, included the validation of local, regional and cross-border functionalities, verification of connectivity between parties and confirmation of overall system readiness. Throughout the campaign, Nominated Electricity Market Operators (NEMOs) and Transmission System Operators (TSOs) tested their systems under a wide range of market conditions. Two iterations of member testing also enabled market participants to confirm the readiness of their own systems.
Collaboration driving readiness for go-live
The successful completion of the testing phases and preceding activities demonstrates effective work across all involved regions. NEMOs and TSOs acknowledge the contributions of all market participants and stakeholders and appreciate their continued engagement in advancing this important market development.
About SDAC
SDAC allocates scarce cross-border transmission capacity in the most efficient way by coupling wholesale electricity markets from different regions through a common algorithm, simultaneously taking into account cross-border transmission constraints, thereby maximizing social welfare. The aim of SDAC is to create a single pan European cross zonal day-ahead electricity market. An integrated day-ahead market increases the overall efficiency of trading by promoting effective competition, increasing liquidity, and enabling a more efficient utilization of generation resources across Europe.
For additional information on SDAC go to:
http://www.nemo-committee.eu/sdac
https://www.entsoe.eu/network_codes/cacm/implementation/sdac