The TSC (Transmission System Operater Security Cooperation) was established in December 2008 as a decentralised initiative for fostering regional European cooperation concerning the safety and security of transmission systems both in the countries concerned and Europe as a whole. The cooperation has undergone significant development ever since, leading to the current existence of two entities: TSC and TSCNET Services GmbH.

The cooperation within TSC and TSCNET Services GmbH involves 13 transmission system operators (TSOs):

  • APG and VKW Netz (Austria);
  • ČEPS (Czech Republic);
  • 50Hertz Transmission, Amprion, TransportBW and TenneT TSO GmbH (Germany);
  • TenneT TSO B.V. (Netherlands);
  • PSE (Poland);
  • Swissgrid (Switzerland);
  • ELES (Slovenia);
  • Energinet.dk (Denmark);
  • HOPS (Croatia) and
  • MAVIR (Hungary).


In 2008, the transmission system operators involved established TSO Security Cooperation to include a permanent group of experts (TSO Security Panel) and new tools for cooperation between control centres.

The common IT platform CTDS was fully operational in January 2011 and has - together with a video conference system - enabled enhanced communication between control centres and operational planning departments of the TSOs involved.

In June 2012, following an agreement with national regulatory authorities, a pilot operation was launched including also a possibility for multilateral remedial measures to ensure the safe operation of interconnected grids. Its aim was i.a. to find a suitable final solution for economic aspects of cooperation in the framework of cost recovery for the activation of certain remedial actions.

In July 2013, the TSC opened a common bureau (Central Service Providing Entity) with a permanent seat in Munich, Germany. The joint office commenced its operations and has been analyzing data from the entire region 24/7 ever since. The office employees (representatives of member TSOs) round the clock monitor and operate common processes associated with the Day-Ahead Congestion Forecast (DACF) and Intraday Congestion Forecast (IDCF). They also closely cooperate with Coreso.

In November 2014, further reorganisation of the office and centralisation of selected TSC activities took place, leading to the founding of the service providing company TSCNET Services GmbH. Its task is to supply tailor-made coordination services for operational planning, forecast data merging, congestion assessment and capacity calculation for the control centres of the TSC TSOs.

There are two governing bodies at TSC: The Cooperation Board, responsible for strategy, budget and extension of the cooperation, and the Operational Board, responsible for the definition and monitoring of business processes and services including TSCNET Services. ČEPS is a founding member of both TSC and TSCNET.


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