Turkey, Russia ink retroactive deal granting 10.25 pct discount on natural gas: Erdoğan
Speaking at an election rally in eastern Turkey's Erzurum, Erdoğan said a $1 billion payment will be made to Turkey under the deal, which followed a Turkish request for a discount on gas first made in 2015.
Turkey is the biggest consumer of Russian gas after Germany.
Russia's Gazprom, which has a de facto monopoly on Russian gas exports by pipeline, supplies gas to Turkey's Black Sea coast via an underwater pipeline called Blue Stream with a capacity of 16 bcm per year.
Gazprom did not respond to a request for comment.