Poland reduced last year the share of its imports of Russian oil to the lowest level since 2005 , but the diversification of oil supplies came at a higher cost for imports from other countries, according to a report by Poland’s central bank published on Tuesday. In 2017, the share of Russian oil in Polish imports dropped to 76 percent, compared to 96 percent back in 2012, according to the central bank report, as carried by Reuters. Yet the bid for energy independence came at higher import costs for Poland, because Russian oil prices averaged $59.70 a barrel in December 2017, compared to $60.20 per barrel for oil from Kazakhstan and $65.60 per barrel for U.S. oil, the central bank’s report showed. Refiners in Poland process mostly Russian oil via pipelines, but in 2017, every third barrel of oil that Poland imported was shipped, according to the report. Poland’s […]