However, the Turkmen side has not increased gas price, the Mehr News Agency quoted Araqi as saying on Sunday.
Turkmenistan is committed to export more natural gas to Iran during winter, he added.
The former managing director of the NIGC, Jawad Owji, said in January that Iran has imported 4 billion cubic meters (bcm) of gas from Turkmenistan since March 19, 2012.
He said that Turkmenistan is currently exporting 15-20 million cubic meters of gas to Iran daily.
According to Iranian official statistics, Turkmenistan exported 11.8 bcm of gas to Iran during the past Iranian calendar year, which ended on March 20.
In November 2012, Owji said Iran has developed a plan to launch a new pipeline, aiming to boost gas supply to the Caspian Sea provinces and cut dependency on gas imports from Turkmenistan.
The 160-kilometer proposed pipeline is projected to carry natural gas from Semnan province to Mazandaran province. The project will be finished at the cost of 3.5 trillion rials (around $285 million) within 2 years, he noted.
