According to PGNiG, on Monday the group received around 20 percent less gas than contracted and around 24 percent less on Tuesday, Reuters reports.
Russia severed gas exports to Ukraine in June in a dispute over prices and the country faces severe energy shortages this winter if the EU cannot broker a supply deal between Moscow and Kiev. Talks are due to resume September.
In an effort to offset lost volumes from Russia, Ukraine has sought to secure more gas from the EU, principally through “reverse flows” – re-exports of Russian gas via countries such as Poland, Hungary and Slovakia.
Senior officials in the European Commission and in eastern European governments say Russia has been raising the prospect of reducing export volumes so their customers have no gas left over for reverse flows to Ukraine. “They say this pretty openly,” one central European ambassador told The Financial Times.
However, Sergei Kupriyanov, a Gazprom spokesman, denied any threat to European export volumes. “This is the first time I have heard of that,” he told The Financial Times.