Project title

  • Modernization of 500 kV OS of Ekibastuz GRES-1

Project description

  • Modernization and reconstruction of 500 kV OS with replacement of the equipment


  • Extension of lifetime of OS equipment up to 30 years
  • Increase of the reliability, prevention of the system crashes due to failure of 500 kV OS equipment, provision of reliability of generated electricity sale and transmission of electricity to Kazakhstan and Russia energy systems

Implementation period

  • 2010-2016

Project cost:

  • 18 032,3 mln.KZT

Technical solutions:

  • Replacement of equipment (autotransformers, switches, current and voltage transformers for measurment, etc.);
  • Construction of new and reconstruction of existing 500 kV cells;
  • Modernization and reconstruction of relay protection and automation (RPA) and emergency control automatics


  • Ensuring the reliability of power generation by EGRES-1, as well as transit power flows

Number of jobs

  • During construction – 100 persons

Current status

  • The facility was put into operation in November 2016.