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The NEMOs and TSOs of Southwest Europe announce the go-live of the Multi- NEMO Arrangement on the French side of the French - Spanish border in the Day-Ahead timeframe.

29 February 2024. The NEMOs (Nominated Electricity Market Operators) and TSOs (Transmission System Operators) of the Southwest Europe (SWE) Market Coupling Project are pleased to announce that the go-live of the SWE Multi- NEMO Arrangement (MNA) implementation on the French-Spanish border will take place on 28th of February 2024 (trading for delivery on 29th of February 2024). The implementation will be effective only on the French side and for the day-ahead timeframe.

This go-live marks another milestone in the EU Market Coupling as set out in the Regulation (EU) 2015/1222 of 24 July 2015, establishing a guideline on Capacity Allocation and Congestion Management (“CACM Regulation”).

With this MNA implementation, pre-coupling and post-coupling steps performed by NEMOs under Single Day-Ahead Coupling (SDAC) governance, will now be performed by more than one NEMO on the French side of the interconnector, ensuring a more robust and efficient cross-border market operation. Trading arrangements on the Spanish side of the interconnector remain unchanged, with the one NEMO operating on that side of the border.

Following this French-Spanish MNA go-live, the SDAC operations on the French-Spanish border will be jointly performed by all the NEMOs designated in the adjacent bidding zones of France and Spain, pursuant to Art. 45 of CACM Regulation.

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 maximising 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 utilisation of generation resources across Europe.

For additional information on SDAC go to: