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European System Operations

European System Operations

The ENTSO-E System Operations Committee ensures a high standard of operability, reliability and security of the European electricity transmission systems within the framework of liberalised energy markets.  The Committee provides proposals for harmonization of operational standards (network codes and rules) on the pan-European level and promotes operational coherence among regions. It contributes to ensure compatibility between system operation, market solutions and system development issues. On pan-European level, the SOC defines and updates technical and operational standards for implementation by regions and individual TSOs, as well as reports to the ENTSO-E Assembly on how these standards have been implemented.

2012 Work

The objectives of high operability, reliability and security within the framework of liberalised energy markets of transmission system operation on the pan European level can only be assured by common operational standards to be complied with by all ENTSO-E member TSOs. The Working Group European Operational Standards (WG EOS) is developing network codes for harmonization of operational standards on pan-European level and for promotion of operational coherence among regions, thus facilitating the market processes.  There are three such codes described below.


  The Objectives of the Operational Security Network Code are to:

  • Determine common operational security principles;
  • Ensure common pan-European operational security and coordination of system operation in normal and emergency situations;
  • Determine common requirements for DSOs, Generators and Consumption units connected to transmission and distribution grid that are necessary for operational security;
  • Principles for exchange of all necessary information.

 The Objectives of the Planning and Scheduling Network Code are:

  • Coordination of outage planning of the grid elements and to coordinate the outages of the generators/loads;
  • Ensuring access to an adequate level of ancillary services
  • Performing security analysis and forecasting (including scheduling of generators and loads) congestion on the different timeframes (more than a year ahead, yearly, monthly, weekly, 2 days ahead, day ahead, intraday, before the real time);
  • Develop a base cases for a Common grid model on the different timeframes;
  • Coordinate the actions and cooperate with all system users;
  • Principles for exchange of all necessary information.

 The Objectives of the Load Frequency Control & Reserves Network Code are to:

  • Manage a continuous balance between demand and generation in the synchronous systems with the goal of ensuring the required frequency (Hz) quality and reliability within each synchronous area;
  • Equip the TSOs with the means, in real time, to adjust the active power schedules (generation or consumption) to ensure a proper balance between load and generation with sufficient reserves;
  • Underpin the required quality and reliability by appropriate procurement of reserves;
  • Principles for exchange of all necessary information.

Electronic Highway

The “Electronic Highway” (EH) is the TSO communications network for real-time data exchange regarding control room functions. EirGrid and SONI will be connecting to this network in 2012.

The ENTSO-E Awareness System (EAS) will also be introduced in 2012, which involves sending data from TSO EMS environments to the TSOs hosting the system, and allowing for an EAS client to view the system frequencies across ENTSO-E. The Electronic Highway will be used as the network supporting the EAS application.