KIEV, Dec. 15 - Naftogaz Ukrayiny expects to receive additional revenues of $20 billion in case of winning the lawsuit against Russia's Gazprom in the Stockholm arbitration on the transit contract.

"We've calculated another $20 billion in future cash flows in case of an arbitration positive decision," Naftogaz Chief Commercial Officer Yuriy Vitrenko said at a press conference in Kiev.

He noted Naftogaz's general requirements to Gazprom in the lawsuit at the Stockholm arbitration on the transit contract are $10.2 billion.