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  International Activities

Slovenská elektrizačná prenosová sústava, a. s. (SEPS) in compliance with the company mission and vision takes an active part in activities influencing the pan-European and Central-European electricity market. The cooperation of the European transmission system operators (TSOs) is implemented both via institutionalized entities such as ENTSO-E, JAO S.A., TSCNET Services GmbH and others and via implementation projects related to network codes and guidelines. SEPS, a responsible TSO with long-term experience, prefers efficiency, long-term sustainability and social responsibility in compliance with the applicable legal regulations.


ENTSO-E is European Network of Transmission System Operators for Electricity, founded by TSOs in December 2008 in Brussels based on the Regulation No. 714/2009 of the European Parliament and of the Council on conditions for access to the network for cross-border exchanges of electricity. ENTSO-E is an international association that unites 43 European TSOs companies from 36 countries. In 2017 the Albanian transmission system operator (OST) became a new fully-fledged member of the association. SEPS as a founding member of the ENTSO–E takes an active part in the activities of working and steering structures of ENTSO-E via its 60 appointed representatives.

The main tasks of ENTSO-E, among others, directly based on the Regulation No. 714/2009 include:

  • elaboration of ten-year network development plans,

  • publishing yearbooks aimed at outlooks and overview of electricity production,

  • technical cooperation among TSOs,

  • drafting and implementation of Network Codes (NC) and (Guideline, GL)
Activities releated to CORE region

Capacity Calculation Region – CORE

At the end of 2016 the Agency for Cooperation of Energy Regulators (ACER) published its decision No. 6/2016 which establishes, inter alia, the CORE region.

This region geographically covers the capacity calculation regions of CEE (Central-Eastern Europe) and CWE (Central-Western Europe) merging of which is subject to the Day Ahead Flow Based Capacity Calculation project.

The CORE region consists of 16 TSOs, where the following projects are addressed with the involvement of SEPS:

Project FB MC (Flow Based Market Coupling)

FB MC or a project of flow-based day-ahead market coupling represents an important step to achieve the objective of the European Commission which is to create a single electricity market pursuant to the Commission Regulation (EU) No. 2015/1222 establishing a guideline on capacity allocation and congestion management.

Project DA FB CC (Day Ahead Flow Based Capacity Calculation)

The project within the CORE region which deals with a development and implementation of the common method for the capacity calculation based on day-ahead flows.

Implementation projects resulting from EB GL
  • IGCC Project
This implementation project aims to create the European platform for the Imbalance Netting procedure according to the EB GL regulation by coordination with the neighbouring foreign transmission systems.
  • MARI and PICASSO Projects
Both implementation projects aim to create the European platform for exchange of the regulation electricity from the reserve to renew frequencies with manual (MARI) or automatic (PICASSO) activation (with the rise time of less than 15 min.) by coordination with the neighbouring foreign transmission systems.

Regional Security Coordination Initiative – RSCI

RSCI (Regional Security Coordination Initiative) is a concept of TSOs cooperation in the interest of coordination of operational safety analyses.

There are currently five entities of regional security coordination providing services of RSCI, in particular TSCNET Services, BALTIC RSC, CORESO, SCC and Nordic RSC. Stipulated by the EU legislation, their maximum number is limited to six.

TSCNET Services GmbH

TSCNET Services GmbH is one of Europe’s Regional Security Coordinators (RSCs). The company based in Munich, Germany, renders integrated services for power transmission system operators (TSOs) and their control centres to maintain the operational security of our electricity system – 24 hours a day, seven days a week.

TSCNET GmbH provides set of mandatory services for their customers according to EU legislation:

  • Coordinated Security Analysis (CSA)
  • Coordinated Capacity Calculation (CCC)
  • Outage Planning Coordination (OPC)
  • Short and Medium Term Adequacy forecasts (SMTA)
  • Improved Individual Grid Models (IGM) and Common Grid Model (CGM)

The TSCNET’s shareholders and main customers are the following 14 TSOs of eleven European countries: 50Hertz (Germany), Amprion (Germany), APG (Austria), ČEPS (Czechia), ELES (Slovenia), Energinet (Denmark), HOPS (Croatia), MAVIR (Hungary), PSE (Poland), SEPS (Slovakia), Swissgrid (Switzerland), TenneT (Germany), TenneT (The Netherlands), and TransnetBW (Germany). In addition, the Luxembourg TSO Creos and Transelectrica from Romania trust in our services.

Slovenská elektrizačná prenosová sústava, a. s., (SEPS) became the 14th shareholder in June 2018.

JAO is a service company established by twenty-two shareholder TSOs from 19 countries of Europe including Slovakia. Its main task is to perform annual, monthly, and daily auctions of rights for electricity transmission through 27 common borders. In December 2017 the European regulatory authorities including ÚRSO approved the methodology according to which JAO became a pan-European platform for capacity allocation – SAP (Single Allocation Platform).


CIGRE (the Council on Large Electric Systems) is an international non-profit association for promoting collaboration with experts from all around the world by sharing knowledge and joining forces to improve electric power systems of today and tomorrow. The main objectives of CIGRE are to design and deploy the power system for the future, optimize existing equipment and power systems, respect the environment and facilitate access to information.

CIGRE provides technical knowledge through events, permanent technical studies (around 2500 experts from accross the globe collaborate in structured work programmes) and publications.


EURELECTRIC (The Union of the Electricity Industry) is an association of 34 full members from 32 European countries formed in 1999, representing common interests of the European electricity industry. Its mission is to contribute to the development and competitiveness of the electricity industry and to promote the role of a low-carbon electricity mix in the advancement of society.

Clean Energy for All Europeans

A new package of the European Commission regulations entitled “Clean Energy for All Europeans”, the first proposals of which were published in November 2016, is curently subject to several revisions with optional commenting by the member states or stakeholders including SEPS.

In SEPS a project team is established to resolve the respective issues closely cooperating with the Ministry of Economy of the Slovak Republic, which represents the Slovak Republic in the Council of the European Union.