Capacity calculation

 The yearly and monthly capacities are depicted using NTC calculations. For further information about these methodologies see Yearly and Monthly capacity calculation methodology (in French).

For the day-ahead capacity calculation, the Central Western Europe region (CWE) is a frontrunner: in 2015, CWE was the first region to implement a flow-based methodology, which is the target methodology of the CACM regulation.

Further information (including the latest approval packages) is available on the JAO website.

The intraday capacity calculation makes it possible to release coordinated additional capacity to the market players on a daily basis, using the flow-based day-ahead market coupling outcome as a starting point.

Further information is available in the context paper and the approval package of the intraday capacity calculation methodology. 

The capacity calculation for the BE-GB bidding zone border is part of the Channel region.

• Until the Long Term Capacity Calculation Methodology (LTCCM) of the Channel region is implemented, Elia will apply an interim methodology. 

• For the Day-Ahead capacity calculation, Elia has developed an interim solution as part of the gradual implementation of the Channel CCM (viz. Art. 27(5)). The interim solution is largely, and whenever possible, aligned with the Channel Capacity Calculation Methodology (CCM).