Improved Individual Grid Models (IGM) & Common Grid Models (CGM) delivery

This service consists in an iterative process starting from the collection of IGMs shared by TSOs on the Operational Planning Data Environment and aiming at delivering to all pan-European TSOs and RSCs, CGMs adequate for the other services listed in this Annex, for all necessary timeframes as specified in their description. This service includes (at least for the timeframes from year-ahead to intraday):

  • Checking quality and plausibility of IGMs provided by TSOs and facilitating their improvement to meet the criteria of quality and plausibility.
  • Merging of IGMs into CGM.
  • CGM model improvement based on the CGM methodology pursuant to GL CACM Art 17 and on agreed procedure pursuant to draft NC OPS Art 12 and 15. Examples of model improvements are given in the description of the following services.

In addition, if regionally required for timeframes close to real-time (from h-1 to h), this service can be simplified when creating the corresponding CGMs, e.g. based on TSOs snapshots. At this timeframe, RSCs-TSOs iterations regarding IGM are not relevant in most situations.

 

Central Western Europe (CWE) area

2 days ahead stage

The necessary technical data for the capacity calculation process in the CWE area are based on both CWE forecast files (called D2CF or 2 Day Ahead Congestion Forecast) from CWE TSOs, and on the latest DACF files from TSOs outside the CWE area

Coreso plays a major role in this process by merging all Individual Grid Models (D2CF and DACF files), which are delivered by TSOs, into one single Common Grid Model (CGM).

Every day, Coreso receives the best two-day forecast (D2CF) files from the CWE TSOs (namely APG, Elia, RTE, Tennet BV, and one file from Amprion for the German control block) but also one-day ahead forecast (DACF) files from non-participating TSOs (around 20 Individual Grid Models) and merges them before making the results available to the various actors. The resulting CGM is vital for the flow-based market process, as it is one of the key inputs used for calculating cross-zonal capacities.

Day ahead stage

The DACF* files provided by each TSO are merged to create a merged file covering Continental Europe. In this first operational step, particular attention is paid to the quality of the data (e.g. line status, adjustments of exchange programs) in order to guarantee the accuracy of results.

Intraday stage

At the core of the global IDCF process, Coreso merges Individual Grid Models, hourly Intraday Congestion Forecast Files (IDCFs) and every 15 minutes on SNapshot Files (SNs) to generate a full description of the European grid.

 

Central Southern Europe (CSE) area

2 days ahead stage

The necessary technical data for the capacity calculation process in the CSE area are based on both CSE forecast files (called D2CF or 2 Day Ahead Congestion Forecast) from CSE TSOs, and on the latest DACF files from TSOs outside the CSE area.

Every day, Coreso receives the best two-day forecast (D2CF) files from the CSE TSOs (namely APG, Eles, Swissgrid, Terna, and RTE) but also one-day ahead forecast (DACF) files from non-participating TSOs (around 20 Individual Grid Models) and merges them before making the results available to the various actors. The resulting CGM is vital for capacity calculation in Italian North borders, as it is one of the key inputs used for calculating cross-zonal capacities.

Day ahead stage

The DACF* files provided by each TSO are merged to create a merged file covering Continental Europe. In this first operational step, particular attention is paid to the quality of the data (e.g. line status, adjustments of exchange programs) in order to guarantee the accuracy of results.

Intraday stage

At the core of the global IDCF process, Coreso merges Individual Grid Models, hourly Intraday Congestion Forecast Files (IDCFs) and every 15 minutes on SNapshot Files (SNs) to generate a full description of the European grid.