Jump to content


The GreenSwitch project will invest in primary infrastructure to modernise and digitalise the distribution and transmission energy systems in Austria, Croatia and Slovenia.

The GreenSwitch project will provide additional cross-border capacity and optimisation of grid operation, extending to lower voltage levels. Many new technologies and techniques will be rolled out on this project, including power-flow prediction and control systems, an optimal supply of physical islands and an advanced approach to providing distribution grid resilience through cross-border connection. These technologies and techniques will secure customers’ energy supplies in border areas in emergency conditions. Cross-sector integration in mobility and heating is also a rare example of innovative technology implementation in the power system.

Increasing operational efficiency and transmission grid controllability in Croatia and Slovenia
  • Installation of new technologies in the Slovenian and Croatian transmission grids (such as power control systems).
  • Installation of HTLS (High-Temperature Low-Sag conductors).
  • Upgrade of DTR (Dynamic Thermal Rating).
  • Integration of all new components into the SCADA/EMS (Supervisory Control and Data Acquisition/Energy Management System).
  • The Wide Area Monitoring System (WAMS) in Croatia will be upgraded to improve the security of supply and quality of service - including new transmission system applications and Information and Communication Technology (ICT) infrastructure.
Sector-coupling integration (power, heat, mobility) in Slovenia
  • Implementation of grid connections for both heavy-duty and fast charging stations.
  • Implementation of waste-heat extraction systems from 11 power transformers.
Increasing distribution grid efficiency, security of supply, and cross-border and renewable energy sources (RES) hosting capacity in the distribution grids of Austria, Croatia and Slovenia
  • Automation and upgrade of seven high voltage (HV) / middle voltage (MV) primary and secondary substations.
  • Upgrade of Advanced Distribution Management System (ADMS) functionalities.
  • Installation of HTLS conductors on MV overhead lines (OHL).
  • Integration of smart grid elements and the modernisation of ICT networks.
  • Closing of MV loops.
  • Installation of four MV shunt reactors.
  • Cross-border emergency connections.