What is "rosukrenergo"

RosUkrEnergo is a Swiss-registered venture company that transports natural gas from Turkmenistan to East European countries. 50% of the company is owned by Gazprom, through its daughter Swiss-registered Rosgas Holding A.G., and another 50% by Swiss-registered private company Centragas Holding A.G., acting on behalf of a consortium of GDF Group owned by Dmytro Firtash and Ivan Fursin.

Before 2009 Russia–Ukraine gas dispute, it was the sole importer of natural gas from Gazprom reselling it to Naftogaz Ukrainy.