According to Gazprom, about 54% of the billion cubic meters, went to the Turkish gas market, while a 46% was delivered to the Turkey-Bulgaria border.
Laying 930 km in the Black Sea, the pipeline has two strings with a combined throughput capacity of 31.5 billion cubic meters. The first string provides gas to Turkey and the second one is intended for gas transit to southern and southeastern Europe passing via Turkish territory.
As the gas operator Bulgartransgaz announced, Russia has already begun European gas deliveries through the pipeline, as commercial supplies got down to business on 1st of January 2020.
Concluding, the pipelaying for TurkStream took 15 months and was completed ahead of schedule back in November 2018.