History overview

In 2014, we celebrated 90 years of the transmission network - 90 years of connectedness with people.

1924
The beginning of electric power transmission in Slovenia - the company Fala, d.d. built the first 77-kilometre-long 80 kV transmission line from the Fala Hydro Power Plant to the 80/35 kV Laško transformer station (Laško substation) and a 35 kV transmission line from the Laško substation to the Trbovlje Thermal Power Plant.
1928
The first high-frequency telephone line in Slovenia is built along the 80 kV Fala-Laško transmission line.
1964
The beginning of the 220 kV network - construction of the key substations at Cirkovce (northeastern Slovenia), at Kleče (central Slovenia) and at Divača (coastal and littoral region).
1924
The beginning of electric power transmission in Slovenia - the company Fala, d.d. built the first 77-kilometre-long 80 kV transmission line from the Fala Hydro Power Plant to the 80/35 kV Laško transformer station (Laško substation) and a 35 kV transmission line from the Laško substation to the Trbovlje Thermal Power Plant.
1928
The first high-frequency telephone line in Slovenia is built along the 80 kV Fala-Laško transmission line.
1964
The beginning of the 220 kV network - construction of the key substations at Cirkovce (northeastern Slovenia), at Kleče (central Slovenia) and at Divača (coastal and littoral region).
1972
The beginning of the 400 kV Nikola Tesla transmission network construction as part of the unified network of the former Yugoslavia - in the first phase, 287.2 km of one-system transmission lines and 36.3 km two-system transmission lines of 400 kV with three substations were built.
1972
The beginning of the 400 kV Nikola Tesla transmission network construction as part of the unified network of the former Yugoslavia - in the first phase, 287.2 km of one-system transmission lines and 36.3 km two-system transmission lines of 400 kV with three substations were built.
1974
In September 1974, the parallel operation of the Slovene electric power system and the west European UCPTE system was established. The permanent synchronous operation with the UCPTE system began at the 220 kV level between the Divača station and the Padriciano station in Italy.
1976
The 400/110 kV substation in Maribor and the 400 kV power lines linking Maribor-Podlog and Maribor-Krško-Slovene/Croatian border at Dobova are included in the Slovenian electric power system.
1974
In September 1974, the parallel operation of the Slovene electric power system and the west European UCPTE system was established. The permanent synchronous operation with the UCPTE system began at the 220 kV level between the Divača station and the Padriciano station in Italy.
1976
The 400/110 kV substation in Maribor and the 400 kV power lines linking Maribor-Podlog and Maribor-Krško-Slovene/Croatian border at Dobova are included in the Slovenian electric power system.
1988
The first optical cable in the ELES Company was integrated into the Krško substation - Brestanica Thermal Power Plant transmission line.
1990
In November, the public company Elektro-Slovenija, d.o.o. (ELES) was established for trading with electric power. After the Energy Act was adopted in 1999 and the transmission activity was split, ELES was transformed into the provider of transmission services and the manager of the transmission network.
1988
The first optical cable in the ELES Company was integrated into the Krško substation - Brestanica Thermal Power Plant transmission line.
1990
In November, the public company Elektro-Slovenija, d.o.o. (ELES) was established for trading with electric power. After the Energy Act was adopted in 1999 and the transmission activity was split, ELES was transformed into the provider of transmission services and the manager of the transmission network.
1995
The beginning of the active integration of telecommunication optical connections into the ELES Company transmission network - OPGW, OPWR, OPPC and ADSS connections with a total length of over 1,000 km.
2002
The remote controlled 400/110 kV Krško substation starts to operate.
1995
The beginning of the active integration of telecommunication optical connections into the ELES Company transmission network - OPGW, OPWR, OPPC and ADSS connections with a total length of over 1,000 km.
2002
The remote controlled 400/110 kV Krško substation starts to operate.
2011
At the Divača substation, the 1200 MVA phase-shifting transformer station - the first such transformer station in Slovenia and one of the biggest in Europe - is officially submitted for operation.
2013
On 30 January, the 2 x 110 kV Beričevo-Trbovlje transmission line is submitted for operation, which was finished six months before the due date. The ELES Company connected it to voltage on 15 November 2012; on 19 December 2012, the entire transmission line was connected to voltage for the start-up and function tests.
2011
At the Divača substation, the 1200 MVA phase-shifting transformer station - the first such transformer station in Slovenia and one of the biggest in Europe - is officially submitted for operation.
2013
On 30 January, the 2 x 110 kV Beričevo-Trbovlje transmission line is submitted for operation, which was finished six months before the due date. The ELES Company connected it to voltage on 15 November 2012; on 19 December 2012, the entire transmission line was connected to voltage for the start-up and function tests.
2014
On 21 May, the 2 x 400 kV Beričevo–Krško transmission line started to operate regularly. This was the biggest ELES investment so far.
2014
On 21 May, the 2 x 400 kV Beričevo–Krško transmission line started to operate regularly. This was the biggest ELES investment so far.
2014
On 3 September, the social company Elektro-Slovenija, d.o.o., was transformed into the public company ELES, d.o.o., sistemski operater prenosnega elektroenergetskega omrežja.
2014
On 3 September, the social company Elektro-Slovenija, d.o.o., was transformed into the public company ELES, d.o.o., sistemski operater prenosnega elektroenergetskega omrežja.
2015
The ELES Company becomes the coordinator of the four-year international research project FutureFlow connecting 12 partners from eight European countries. The project has a total value of €13 million and is financed by the European programme Horizon 2020.
2015
The ELES Company becomes the coordinator of the four-year international research project FutureFlow connecting 12 partners from eight European countries. The project has a total value of €13 million and is financed by the European programme Horizon 2020.
2016
Together with the Japanese agency NEDO and Hitachi, ELES concluded a partnership agreement on implementing advanced smart grid and smart community infrastructure in Slovenia.
2016
Together with the Japanese agency NEDO and Hitachi, ELES concluded a partnership agreement on implementing advanced smart grid and smart community infrastructure in Slovenia.
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