Core Flow-Based Market Coupling Project Go Live set for 08 June 2022

Amsterdam, Berlin, Bucharest, Budapest, Bratislava, Brussel, Ljubljana, Luxemburg, Paris, Prague, Vienna, Warsaw, Zagreb
21 04 2022

As communicated earlier, the planned go-live of 20 April 2022 for Core Flow Based Day Ahead Market Coupling was not supported by some Core TSOs and NEMOs.

During the past two weeks, the Core project parties have intensively worked on solutions to resolve the remaining concerns raised by some parties with regards to certain aspects of the Flow Based Day Ahead Capacity Calculation. As a result, Core project parties are able to announce the new go-live date: 08 June 2022 (Trading Day for delivery on 09 June 2022).

The next steps to adequately address the concerns raised earlier are:

  • The mitigations to further improve operational stability of TSO’s capacity calculation were already implemented. In this period some issues occurred with fallbacks for which fixes will be in place before go-live.
  • To further optimise the intraday ATC capacities algorithmic improvements and local validation processes will be implemented before go-live. Further improvements are foreseen to be implemented after go-live.
  • Dedicated reporting to NRAs will be created for all cases with RAM<20% to closely monitor the occurrences and mitigations - this information of RAM<20% is already publicly available in the publication tool.
  • Improvements in the publication tool were implemented 1

With these measures, all project parties feel confident about going live, also considering the current market circumstances. Moreover, all parties see a significant benefit in the experience to gain during the summer period, prior to entering fall/winter.


1  https://www.jao.eu/news/market-message-update-core-publication-tool



Communication channels

Market participants who would like to follow closer the project development are invited to join the Core Consultative Group (CCG) by sending an email to CoreCG@magnus.nl. The participants of the Core Consultative Group will receive regular information, and invitations to teleconferences and meetings.

Next to the CCG a Question & Answer Forum for the Core FB MC project is currently in use. The Forum is available under the Core FB MC section on the JAO website, ie. www.jao.eu. Project parties invite all market participants to use this Forum for their queries.

About the Day-Ahead Flow-Based Market Coupling project in the Core CCR

The Core Flow-Based Market Coupling (Core FB MC) project promotes the development and implementation of a flow-based day-ahead market coupling across the whole Core capacity calculation region (Core CCR) in the framework of the Single Day-Ahead Coupling (SDAC). The Core CCR consists of the bidding zone borders between the following EU Member States’ bidding zones: Austria, Belgium, Croatia, the Czech Republic, France, Germany, Hungary, Luxemburg, the Netherlands, Poland, Romania, Slovakia and Slovenia.

Market integration - core to energy transition

The energy transition towards a carbon free electricity supply is a European challenge that requires the use of the European electricity system to the full extent. Weather- dependent supply and increasing demand response will lead to a different and more intense use of the grid. The Core market integration project is aiming to create operational preconditions to optimise the use of the system from a regional perspective and make the single European market a reality.



OPCOM is the Romanian Electricity and Gas Market Operator. Since 2000, OPCOM has been committed to strengthen a marketplace where energy and environmental certificates are traded in conditions of transparency and integrity. Today, the trading portfolio offered by OPCOM ranges from electricity products to gas products, as well as green certificates. More than 900 companies are using the products available for trading on short-term electricity, gas and green certificates markets as well as on term markets for electricity, gas and green certificates bilateral contracts. In addition to this role, OPCOM is responsible for settlement of the transactions concluded on short-term energy markets, Balancing Market as well as the Imbalances of the Balancing Responsible Parties. OPCOM also manages the Green Certificates Register. Today, OPCOM is acting as Registered Reporting Mechanism under REMIT managing more than 480 reporting agreements on its electricity and gas markets. OPCOM was designated by the Romanian Energy Regulatory Authority as Nominated Electricity Market Operator (NEMO) in accordance with the Regulation (EU) 2015/1222 for fulfilling tasks related to the coupling of the day-ahead and intraday markets.

OPCOM applies the Quality Management System complying with ISO 9001 - SR EN ISO 9001, respectively the Information Security Management System complying with ISO/IEC 27001 - SR EN ISO/IEC 27001, both systems being certified by Lloyd's Register LRQA.

For more information about OPCOM, please visit us at www.opcom.ro

Communication note 21.4.2022