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The Municipal Power Plant in Bratislava starts its operation. On the Main Square and the promenade, the first electric streetlights are switched on.
The constituting General Meeting of Západoslovenská Elektrárna takes place.
Západoslovenská Elektrárna, úč.spol., is listed and established as a legal entity.
Západoslovenská Elektrárna, úč. spol. starts operating the first 100 kV line between Trnava and Bratislava including 100/22kV terminals.
The first cross-border 110 kV connection between Nové Zámky and Kisigmánd (Hungary).
High voltage network is connected to the 400 kV national transmission system and supplies become more reliable.
Západoslovenské energetické závody is declared a state enterprise.
After 55 years, ZSE becomes a joint-stock company again.
Representatives of the Slovak Government and the E.ON Energie Group based in Munich sign an agreement on transferring a 49% share to E.ON Energie. The price of this share is EUR 330 million.
The 49% share package of Západoslovenská energetika, a.s. passes onto E.ON Energie AG.
The European Bank for Reconstruction and Development (EBRD) and E.ON Energie sign an agreement on selling a 9% share in Západoslovenská energetika, a.s.
The 9% share of E.ON Energie AG in ZSE is transferred to the EBRD.
ZSE aligns its graphics with the E.ON design and adds “member of the E.ON Group” to its logotype.
Date of the legal unbundling of ZSE. Distribution operations are operated by ZSE Distribúcia, a.s. and business activities are run by ZSE Energia, a.s. Západoslovenská energetika, a.s. is the full owner of the newly established subsidiaries. The ZSE Group is established.
E.ON Energie AG Munich put its 40 % share of ZSE into its fully owned subsidiary E.ON Slovensko, a.s.
ZSE Energia officially enters the gas market. Gas supply is offered to corporate customers. In April 2012, its offer is extended to all market segments including small enterprises and households.
The third energy package leads to the separation of all activities relating to the electricity distribution to Západoslovenská distribučná, a.s. and activities relating to business to ZSE Energia, a.s. These changes come into effect on 1 January 2014. The total of 1,100 job positions are transferred to the distribution company.
ZSE renovated the former diesel power plant in the town of Piešťany dating back to the start of the last century. It is now an interactive centre of science and technology. It becomes the Building of the Year and Cultural Site of the Year.
The ZSE Foundation was established, focusing on projects in the areas such as innovation, education, environmental protection and community development.
ZSE acquires again the combined heat and power plant in Malženice with the installed capacity of 436 MW.
ZSE Drive brand is launched on the market. ZSE Drive presents the first 350 kW charging station and launches the commercial service of charging in the public charging network ZSE Drive.
As the first big electricity supplier in Slovakia, ZSE starts offering the Slovak households the possibility of covering their consumption with electricity produced from renewable sources thanks to guarantees of origin (Green Electricity).
ZSE Group acquires the majority share in EKOTERM, s. r. o.
ZSE Group acquires the majority share in BK, a. s.
ZSE celebrates its 100th anniversary.