[Core] Confirmation of Core Flow-Based Intraday Capacity Calculation (c) go- live for business day 25 June 2025
Confirmation of Core Flow-Based Intraday Capacity Calculation (c) go-
live for business day 25 June 2025
Date: 24-06-2025
The Core project parties are pleased to confirm the operational readiness and start of Core
Flow-Based IDCC(c) process on 25 June 2025. Once the operational process has been
completed a confirmation of the successful go-live will be sent out on 25/06. The results of
the IDCC(c) process will be published daily on the JAO Publication tool, accessible via
https://publicationtool.jao.eu/coreID/IDCCC_marketGraph.
The IDCC(c) process delivers updated cross-zonal capacities by 04:30 to the Single Intraday
Coupling (SIDC) market platform for MTU’s 06:00 – 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 next 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 Question & Answer 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.