As of 31 December 2018, over the entire cooperation with Turkey has been supplied over 455 bcm of natural gas. In 2018, supply volumes amounted to 23.96 bcm.

The contract with Turkey’s BOTAŞ Company for supplying up to 6 bcm of gas per year for over 25 years (1987-2011) based on an Intergovernmental Agreement dated September 18, 1984, was signed In February 1986. The first deliveries of natural gas to Turkey from the Soviet Union began in June 1987, by transit via Romania and Bulgaria using the specially-constructed Trans-Balkan pipeline.  The long term contract with BOTAŞ for supplying an additional 8 bcm per year via this route through 2022 was signed in 1998. 

Until 2003, natural gas was delivered to Turkey only by transit through Ukraine, Moldova, Romania, and Bulgaria. In 2003, gas started flowing through the Blue Stream pipeline under the contract between Gazexport and BOTAŞ dated December 15, 1997 and based on the Intergovernmental Agreement on Russian gas supply to Turkey via the Black Sea. The maximum annual capacity for supply via this route is 16 bcm. In January, 2020, supplies via TurkStream gas pipeline started. 

The BOTAŞ state pipeline company was founded by the TPAO state oil company in 1974 in accordance with a Turkish government resolution. BOTAŞ has engaged in gas trading and transportation since 1986. Until 2001, BOTAŞ had exclusive rights to oversee and structure the gas market in Turkey. With the aim of accession to the European Union, the Turkish government enacted a Natural Gas Market Act that entailed gradually eliminating the gas import monopoly by having BOTAŞ transfer pre-contracted gas volumes to private sector importers, on a tender basis (and subject to the gas seller’s approval).

Given the deregulation of Turkey’s gas market, Gazprom Export in 2007 and in 2012 signed contracts with the private companies that gained the rights to import gas into Turkey. These contracts allow for supplying up to 10 bcma of Russian gas to Turkey.