Countries were linked up as part of the Interim Coupling Project which aims to further develop regional integration of day-ahead organized electricity markets by introducing Net Transmission Capacity (NTC) based implicit capacity allocation.
Single Day-ahead Coupling (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 and calculating prices.
HUPX, the operator of the organized Hungarian spot power market, said separately that the next phase of integration is the Bulgarian-Romanian coupling, which is scheduled three months after the successful go-live of the Interim Coupling. The Croatian-Hungarian coupling will happen simultaneously with the introduction of flow-based capacity calculation in the Core region, including Hungary, scheduled to go live in February 2022.



