KIEV, Aug. 22 – The growth in oil and gas extraction by the national Naftogaz Ukrayiny's companies is being impeded by a lack of funds, partly due to its constantly increasing tax burden, according to Naftogaz Ukrayiny Board Chairman Yevhen Bakulin.

"We, and most experts, believe that today the company does not have enough funds for intensive growth. The pace of growth in oil and gas extraction could be bigger," he said in Kiev on Tuesday.