Net sales of gas increased by RUB 32,091 million, or 2 %, to RUB 1,618,762 million, for the six months ended June 30, 2015 compared to the same period of the prior year.
Net sales of gas to Europe and other countries increased by RUB 63,424 million, or 7 %, to RUB 946,620 million for the six months ended June 30, 2015 compared to the same period of the prior year. The overall increase in sales of gas to Europe and other countries was driven by the increase in average Russian Ruble price (including excise tax and customs duties) by 21 % compared to the same period of the prior year. The change was mainly driven by the increase in the foreign exchange rates which is partially compensated by the decrease in volumes of gas sold by 7 %, or 5.6 bcm.
Net sales of gas to Former Soviet Union countries decreased by RUB 33,309 million, or 13 %, to RUB 229,638 million for the six months ended June 30, 2015 compared to the same period of the prior year. The change was due to the decrease in volumes of gas sold by 32 %, or 9.8 bcm, which is partially compensated by the increase in average Russian Ruble price (including customs duties) by 17 %. The change was mainly driven by the increase in foreign exchange rates.
Net sales of gas in the Russian Federation decreased by RUB 15,244 million, or 3 %, to RUB 425,284 million for the six months ended June 30, 2015 compared to the same period of the prior year. This is primarily explained by the decrease in volumes of gas sold by 4 %, or 5.4 bcm.
Operating expenses decreased by RUB 24,444 million, or 1 %, to RUB 2,224,215 million for the six months ended June 30, 2015 compared to the same period of the prior year.
The major factor leading to a decrease in operating expenses was a decrease in charge for impairment provisions. This change is explained by charge for impairment provision for doubtful trade accounts receivable in the amount of RUB 215,832 million for the six months ended June 30, 2014 (primarily in respect of doubtful trade accounts receivable of NJSC Naftogaz Ukraine).
As a result of change in the exchange rates of the Russian Ruble against foreign currencies the net exchange gain disclosed in finance income and expenses amounted to RUB 85,071 million for the six months ended June 30, 2015 compared to net exchange loss of RUB 47,987 million for the same period of the prior year.
Profit attributable to owners of PJSC Gazprom for the six months ended June 30, 2015 totaled RUB 675,904 which is RUB 225,326 million, or 50 %, higher compared to the six months of the prior year.
Net debt balance (defined as the sum of short-term borrowings, current portion of long-term borrowings, short-term promissory notes payable, long-term borrowings, long-term promissory notes payable, net of cash and cash equivalents and balances of cash and cash equivalents restricted as to withdrawal under the terms of certain borrowings and other contractual obligations) decreased by RUB 201,042 million, or 12 %, from RUB 1,650,633 million as of December 31, 2014 to RUB 1,449,591 million as of June 30, 2015. This decrease resulted from decrease in long-term borrowings, change in foreign currency exchange rates (primarily, depreciation of Euro against the Russian Ruble) and increase in cash and cash equivalents.