Natural gas deliveries to Slovenia started in 1978. On November 5, 1992, the Intergovernmental Agreement was signed, foreseeing Russian natural gas supplies to Slovenia in the volume of up to 0.8 bcma.

In 2017, Gazprom Export and its partner Geoplin d.o.o. Ljubljana signed a new contract for natural gas supply within the period of 2018–2022. As of 31 December 2019, approximately 14.9 bсm of natural gas were delivered to Slovenia since the beginning of supplies, including 336 mcm in 2019.