TRANSMITTING ENERGY, MAINTAINING BALANCE.

Physical and commercial cross-border electric power flows

Power plants input generated electric power into the transmission network; five distribution companies and high-voltage network consumers offtake electric power from the transmission network. In order to preserve the balance in the electric power system, the exchange of electric power with Austria, Italy and Croatia through international cross-border connections is also important.

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News

The generation and load of electric power

The balance between the generation and offtake of electric power from the transmission network is achieved by using the leased system services and purchasing or selling energy for balancing. Thus, deviations between offtake realisation and the plan do not endanger the safe operation of the transmission network and the supply of electric power to the final consumers.

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  • Taking care of the transmission network
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    ELES is the operator of Slovenia’s electric power transmission network. ELES is responsible for 669 km of transmission lines in the 400 kV transmission network, 328 km of transmission lines in the 220 kV transmission network, and 1,862 km of transmission lines in the 110 kV transmission network.
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    Taking care of the transmission network
  • Reliably transmitting electric power
    Reliably transmitting electric power
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    The company ensures the reliable, safe and uninterrupted supply of electricity 24/7. As the connection between the producers and consumers of electricity, ELES is also responsible for the seamless operation of Slovenia’s entire electric power system.
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  • We enable the quality of life
    We enable the quality of life
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    ELES is aware that its system inevitably encroaches upon the environment and life; however, this is achieved prudently following the principles of the sustainable development of the social and natural milieu.
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  • 263 pylons along the 2 x 400 kV Cirkovce–Pince transmission line
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    pylons along the 2 x 400 kV Cirkovce–Pince transmission line
    The Cirkovce–Pince transmission line and the new switchyard RTP Cirkovce will enable the first inter-state connection with the transmission network of the neighbouring country of Hungary. This will increase the reliability of Slovenia’s electric power system operation.
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Treasury of knowledge

Personal protective equipment for work at height

Overhead power lines maintenance workers use protective equipment for working at height; the equipment comprises a helmet, climbing safety belt, Y-rope, retractable type fall arrester and a slider for the fixed protective system.

Generation unit from 1903

The Fala-Laško Museum of Electric Power Transmission also features a unique generation unit with a Francis spiral-shaped turbine from 1903. This is the first high-pressure device in Slovenia with a falling water column of 104.6 m and one of the first hydroelectric power plants in the world with a falling water column above 100 m.

The first useful bulb in the world

The first useful light bulb was made by the American inventor Thomas Alva Edison (1847-1931). After many of his attempts failed, he succeeded in producing a carbon filament bulb. The Museum in Laško exhibits the bulb in its original form alongside its mould.

Maintenance man’s safety belt from 1956

Means of protection and protective equipment include portable and transportable devices used for protecting workers from electrical shocks, electric arcs, electric fields, the products of burning and falls from a height.

Power plant telecommunications from 1988

Electric power facilities are often located away from the usual telecommunication lines. Therefore, transmission lines are the only option for a reliable and economic connection. This is the reason for establishing the first high-frequency connections through transmission lines as early as 1920.
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