"I discussed cooperation opportunities, and we mainly talked about natural gas issues since Iran is one of our main gas suppliers," Yildiz told AA correspondent.
Yildiz said Turkish and Iranian technical teams would continue to deal with the issue and present a report in two weeks.
"We will implement an action plan which will be in the best interests of the two countries," he said.Yildiz said Turkey and Iran also debated cooperation in renewable energy.
On his one-day visit to the Iranian capital of Tehran, Yildiz met Minister of Petroleum Masud Mir-Kazemi; Agha Muhammadi, the economic assistant to the First Vice President; and Minister of Energy Majid Namju.
Yildiz also had talks with First Vice President Mohammad Reza Rahimi, and Acting Foreign Minister Ali Akbar Salehi.Minister Yildiz returned to Turkey in the evening.