Ukrainian national company Naftogaz has made a $150 million prepayment for Russian energy giant Gazprom’s supply of 1 billion cubic meters of natural gas in January, Naftogaz said on Wednesday, Reuters reported. “Naftogaz expects to receive 1 billion cubic meters of gas through partially underspent prepayment for December 2014 and its prepayment for January 2015,” Naftogaz said.