1974
Establishment of the Natural Gas Sector at what was then Petrol and the signing of a self-management agreement to pool funds to implement the programme to supply natural gas to Slovenia.
1975
Establishment of the company and transformation of the sector to Petrol TOZD Zemeljski plin.
1977
Start of construction of the Slovenian gas transmission network.
1978
Start of transmission of natural gas to Croatia and supply of natural gas from Russia to Slovenian customers.
1979/2004
Multiple changes to the legal status of the company, expansion of the natural gas network, connection of new customers and improved reliability of supply through the use of leased storage facilities, and the supply of natural gas from Algeria (1992) and Austria (2001).
2005
Geoplin d.o.o. Ljubljana has maintained the activity of natural gas trading while the function of natural gas transmission network system operator is performed separately by the subsidiary Geoplin plinovodi d.o.o.
2012
Certification of the subsidiary Plinovodi d. o. o. as an independent operator of the gas transmission system.
2013
Expansion of company and its sales abroad..
Offer of comprehensive energy-related services.
2014
Establishment of a subsidiary in Croatia which received all necessary permits to trade natural gas and to register its own balance group.
Active member at gas hubs in Austria, Italy and Hungary.
Implementation of energy management projects for setting up CHP units (implementation and start-up of CHP units).
2018
Petrol becomes once again the majority shareholder in Geoplin.
2023
End of natural gas supply from Russia and re-establishment of supply from Algeria.
Based on the natural gas supply agreement between Geoplin and Algerian Sonatrach, Slovenia will continue to receive uninterrupted supply of natural gas.