Confirmation of Core Flow-Based Intraday Capacity Calculation (e) go-live for business day 14 October 2026
The Core project parties are pleased to confirm the operational readiness and start of Core Flow-Based IDCC(e) process on 14 October 2026. Once the operational process has been completed a confirmation of the successful go-live will be sent out on 14/10. The results of the IDCC(e) process will be published daily on the JAO Publication tool, accessible via https://publicationtool.jao.eu/coreID/.
The IDCC(e) process delivers updated cross-zonal capacities by 16:00 to the Single Intraday Coupling (SIDC) market platform for MTU’s 18:00 – 24:00. Having a harmonised capacity calculation methodology in place in the Core CCR makes the European electricity system more efficient and robust. This harmonisation thereby improves the capacity allocation in the Core CCR and enables the European power grid to transport more electricity across borders leading to lower overall cost. Furthermore, it allows for an improved cooperation between all involved parties. Finally, market participants will also benefit from further improved transparency of all capacity related data.
This milestone is the final step in the implementation of the sequence of flow-based intraday capacity calculation in the region and a big step towards the optimisation of the available capacity for the intraday market while respecting operational security using the latest available CGM (common grid model).
Communication channels
Market participants who would like to follow the Core project developments are invited to join the Core Consultative Group (CCG) by signing up to the Core CG distribution list [link]. The participants of the Core Consultative Group will receive regular information and invitations to teleconferences and meetings.
Next to the Core CG, a Q&A Forum for the Core Flow-Based capacity calculation project is currently in use. The Forum can be accessed via https://coreforum.my-ems.net/.
The Core TSOs invite all market participants to use this Forum for their queries.
About the Intraday Capacity Calculation project in the Core CCR
The Core Flow-Based Intraday Capacity Calculation (Core FB IDCC) project promotes the development and implementation of a flow-based intraday capacity calculation across the whole Core Capacity Calculation Region (Core CCR) in the framework of the SIDC. The Core CCR consists of the bidding zone borders between the following EU Member States’ bidding zones: Austria, Belgium, Croatia, Czech Republic, France, Germany, Hungary, Ireland, Northern Ireland, Luxembourg, 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.