Gazprom chairman Alexey Miller said the company may start exports of natural gas to Bulgaria, Serbia and Hungary through the transit string of the TurkStream natural gas pipeline in 2020. Gas exports may start to Bulgaria, Serbia and Hungary in early 2020, when TurkStream reaches its project capacity, Miller said in a video file posted on the Gazprom website on Friday. "I will not tell you the exact date today, but the commissioning of both the first and second legs of the gas pipeline will happen by the end of 2019," Miller said. In May, Bulgarian prime minister Boyko Borisov said the string of the TurkStream pipeline for the transit of Russian gas to Europe will extend from Turkey to Bulgaria and the country will receive Russian natural gas which is to be transported to third countries. The combined volume of Russian natural gas that could enter Bulgaria from the existing gas link through Ukraine and through TurkStream will total 34-35 billion cubic metres, Borisov said back in May.