Transmission lines
Transmission and cable lines interconnect power plants, electricity generators and consumers at the high-voltage level. The ELES Company is responsible for:
- 828 km of transmission lines in the 400 kV voltage level,
- 328 km of transmission lines in the 220 kV voltage level,
- 1,926 km of transmission lines in the 110 kV voltage level, and
- 42 kilometres of cable lines at the 110 kV voltage level.
The Slovenian power system is also interconnected with neighbouring electricity systems. Slovenia is connected:
- to Austria by two 400 kV transmission line systems and one 220 kV transmission line,
- to Italy by one 400 kV and one 220 kV transmission line,
- to Croatia by four 400 kV transmission line systems, two 220 kV transmission lines and three 110 kV transmission lines, and
- to Hungary by one 400 kV transmission line.
Overhead power lines length
Heights
Spans
Safety warnings and markings
Substations
From high-voltage switching and transformer substations, transmission connections run either directly or through transformers from electricity generation facilities to the points of connection to the transmission network used by customers. ELES operates and maintains 67 switching and transformer substations equipped with 32 power transformers and one phase-shifting transformer, with a combined installed capacity of 6,783 MVA. These facilities are distributed throughout Slovenia, with the largest substations located in Beričevo, Podlog, Maribor, Cirkovce, Divača, Okroglo and Krško.
Transformation
Distribution transformer substation