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Market Coupling - Day-Ahead market

OTE, a.s. (hereinafter 'OTE'), as a nominated electricity market operator ('NEMO') in the Czech Republic, cooperates with other European NEMOs to implement a single day-ahead and intraday electricity market across Europe, as set out in the European Commission Regulation 2015/1222 of 24 July 2015 (CACM Regulation). This regulation establishes a guideline on capacity allocation and congestion management. OTE representatives are thus actively involved in individual market coupling projects.

Day-ahead and intraday market coupling, as required by the CACM Regulation, leads to the removal of barriers to cross-border trading and promotes one of the fundamental principles on which European cooperation is based –  the free movement of goods, persons, and services. The energy market divided into individual (though physically interconnected) national markets are inefficient and trading on it is riskier, thus expensive.

While the interconnection of electricity markets is primarily intended to facilitate trading and reduce losses from inefficient use of cross-border capacities, the overall impact is much wider. For traders, thanks to the unification of trading rules, market coupling facilitates entry to individual European markets and expansion of business opportunities. For transmission system operators it increases the efficiency of the use of cross-border profiles. For the final customer, the creation single electricity market brings increased security of electricity supply as well as benefits that result from a wider choice of suppliers thanks to increased competition in individual markets. In the overall context, this puts pressure on the unregulated part of the electricity price and leads to lower energy prices for the final customer.

OTE is involved in the following projects of the day-ahead market: All NEMO Committee, Single Day-Ahead Coupling (SDAC), 4M Market Coupling (4M MC), Core Flow-Based Market Coupling (Core FB MC) and DE-AT-PL-4M Market Coupling (Interim Coupling).


News from the day-ahead market can be found here:

10/05/2021 Updated planning of the DE-AT-PL-4M MC (Interim Coupling) Project
23/04/2021 Webinar on the implementation of the project DE-AT-PL-4M MC - materials
18/03/2021 Updated test planning of the DE-AT-PL-4M MC (Interim Coupling) Project
01/02/2021 Joint press release to Interim Coupling start of testing February 2021  
13/11/2020 Start of publication of Core flow-based day-ahead capacity calculation data and market coupling simulation results, and updated project planning.
09/11/2020 Current status of the DE-AT-PL-4M MC (Interim Coupling) Project
24/03/2020 The Basic Principles of the Interim Coupling Project
03/03/2020 Up-to-date information on the Core Flow-Based Market Coupling project
10/12/2019 NEMOs publish the first CACM annual report on intraday and day-ahead coupling
09/12/2019 Countries of 4M Market Coupling to be connected with Multi Regional Coupling by end of 2020 and Interim Coupling project enters implementation phase
31/07/2019 The NEMO Committee propose amendments to Algorithm Methodology and ID Product Methodology to support market coupling evolutions
03/06/2019 NEMO Committee announces launch of new website and launch of a joint public consultation on Algorithm Methodology
01/08/2018 Approval of the methodology according to the CACM Regulation
19/02/2018 Approval of methodologies according to the CACM Regulation
23/11/2017 ACER decision on the nominated electricity market operators’ Proposal for harmonized maximum and minimum clearing prices for single day-ahead and intraday coupling 
14/11/2017 Submission of the revised Proposals for conditions or methodologies according to the CACM Regulation for approval
18/07/2017 MCO Plan approved