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The 4M Market Coupling ('4M MC') project involves the market coupling of Czech, Slovak, Hungarian, and Romanian day-ahead markets. The 4M MC project was successfully launched on 19 November 2014 and marked another milestone on the road to a single European electricity market. The following documents specify this project in more detail.



4M MC represents a daily implicit allocation process based on the Net Transmission Capacity ('NTC') method of calculating cross-border transmission capacity, aiming for maximum compatibility with the EU target model. The project uses a unified EUPHEMIA algorithm and a PCR technical solution that is constantly being developed in order to interconnect markets via price market coupling, which calculates the spot price of electricity in Europe on a daily basis while respecting capacity on cross-border constraints.

The 4M MC project is operated in parallel to the Multi-Regional Coupling ('MRC') project, which connects day-ahead electricity markets in 19 European countries. Under the CACM Regulation, the aim is to couple day-ahead markets and to create a single day-ahead electricity market ('SDAC') across Europe. Both projects are considered equal in this process. In the enduring phase of implementation of the CACM Regulation, both MRC and 4M MC projects must be fully coupled.


Picture 2 - Map of 4M MC and Multi-Regional Coupling (MRC) projects running in parallel

It is expected that in 2021 4M MC, Poland and MRC will be coupled by introducing an implicit allocation based on the NTC capacity calculation method at 6 borders between these projects (PL-DE, PL-CZ, PL-SK, CZ-DE, CZ- AT and HU-AT) through the so-called DE-AT-PL-4M MC project and in 2022, market coupling under the Core Flow-Based Market Coupling project (Core FB MC) will be implemented..


Market information

Parameters of short-term trading are listed here.