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

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


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.

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 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. 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 is core to the 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 extend. 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.



press release from 21.04.2022

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