"Over the past 24 hours, Russian gas deliveries via the Drozdovichi [gas distribution] point on the Polish-Ukrainian border were 7 million cu m," Joanna Zakrzewska said, adding that they should be 14 million cu m.
"This means the contract with RosUkrEnergo is not being fulfilled," she said.
Zakrzewska said last week that only 50% of agreed Russian gas supplies, transited via Ukraine to Europe, have reached Poland.
Under the contract with Swiss energy trader RosUkrEnergo, Poland should receive 14 million cubic meters of gas daily.
Poland confirmed on Wednesday the resumption of Russian gas deliveries transited via Ukraine.
Poland annually consumes some 14 billion cu m of natural gas, with 6.2 bcm imported from Russia. The country produces another 4.2 bcm itself and transits 30 bcm of gas to Germany.
RosUkrEnergo has declined to comment on the situation.
Russian gas transit to Europe through Ukraine stopped January 7 over a row between Russia and Ukraine over a lack of a 2009 contract. Ukraine closed transit gas pipelines. Transit resumed January 20.
