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Slovenska elektrizacna prenosova sustava, a.s. characteristics
Slovenska elektrizacna prenosova sustava, a.s. transmits electricity on the whole territory of Slovakia and ensures the electricity transmission from power plants to the distribution network and major customers connected to the 220 kV and 400 kV grids. Imports, exports, and transit of electricity as well as exact measurements are made through transmission system lines and substations.
The Company is equipped with advanced diagnostic instrumentation to ensure care of its equipment. The services are also provided to distribution companies and generation facilities, wholesale customers, and since 1996 for foreign customers, too. In parallel the Company controls the transmission system of the Slovak Republic through the Slovak Power Dispatching Centre.
As much as 81.5 % of the transmission system maintenance and attendance is ensured on a contractual basis, that is similar like at other advanced ENTSO-E utilities.

Subject of activities

Slovenska elektrizacna prenosova sustava, a.s. acts as the operator of the transmission system of the Slovak Republic, as required by the Directive 2003/54/ES. The main subjects of Slovenska elektrizacna prenosova sustava, a.s. activities include:
  • Reliable operation of the transmission system (400, 220 kV and a portion of 110 kV lines, which serve for electricity transmission purposes).
  • Dispatching control of the transmission system.
  • Even balance of the system (generation - consumption).
  • Electricity transmission on a contractual basis.
  • System and support activities.
  • Maintenance, renewal, and development of the transmission system components, and the system as a whole.
  • Electricity transit.
  • Co-ordination of the system control in internationally interconnected transmission systems.