Bloomberg Saudi Aramco’s chief executive said the most important tax paid by the state-owned energy giant will fluctuate with the price of oil, a significant move ahead of the company’s initial public offering this year. Adjusting the 20 percent royalty on oil revenue Aramco currently pays would help the kingdom to raise extra money if prices climb. While not unusual …

Bloomberg US natural gas soothsayers are at a stalemate. Bulls say more arctic air may vault futures above $4 for the first time since 2014. Bears see the February contract expiration and a warm spell dragging them lower. Welcome to the suddenly uncertain world of fuel trading. Eight of 17 traders and analysts surveyed by Bloomberg News predicted prices that …

BERLIN / Reuters European gas networks can cope with further production cuts at the Dutch Groningen field as the government seeks to limit earthquake risks, a leading pipeline company and gas industry official said in an interview. The Dutch government had said that output at the major European field, which used to provide 53 billion cubic metres (bcm) per year …