"Russia has made huge investments in exploration, refining, and transportation of gas and holds a great share of supplying security. The country plans to increase its output to 855 billion cubic meters per year by 2035," Putin said.

“We know that energy demand is growing. We also know that renewable energy will have to meet most–if not all–of this increased demand. Oil and gas will remain critically important energy resources," Mr. Sætre said on Monday. "Even in a 2 degree world we need oil and gas roughly at today’s levels in 2040."

“We have never seen this in the last 30 years, two consecutive years of investment decline,” the IEA’s executive director, Dr. Fatih Birol, told The Wall Street Journal on the sidelines of a Statoil conference. “This will have implications for the oil markets, if not tomorrow then the day after tomorrow.”

Speaking at an energy conference in Bahrain on Thursday, Ali al-Naimi, said oil companies “need to increase investments in order to guarantee stability of market for the long and short term”.

Australia is significantly adding to global liquefied natural gas (LNG) supply capacity. Two new facilities started LNG exports within the last 12 months, and 5 more projects are under construction, scheduled to come online by 2018. With this growth, Australia is expected to overtake Qatar and Malaysia to become the world's largest LNG exporter, with 11.4 billion cubic feet per day (Bcf/d) of liquefaction capacity by 2019.

"In 2016, geopolitical challenges will not go away. We have to keep pushing for diversification of energy sources," Sefcovic said, reiterating that the Commission would scrutinize whether the Nord Stream plan complied with EU rules.

Credit crunch was expected to hit many independent U.S. oil producers, starving the industry of billions of dollars and further denting company budgets and drilling plans.

The U.K. government will make keeping the lights on the top priority with natural gas and nuclear power playing a central role in that goal, Energy and Climate Change Secretary Amber Rudd is expected to say in a major speech later Wednesday setting out a new energy policy for the country.

Gazprom would need to bring spot gas prices below $4 per million British thermal units (mmBtu), versus around $5.65 per mmBtu now, to shut Europe off to U.S. imports - a level Goldman Sachs expects could be reached by 2018/2019.

The process of adjustment in the oil market is rarely a smooth one, but, in central scenario, the market rebalances at $80/bbl in 2020, with further increases in price thereafter.

OPEC’s share of the global oil market will expand from 2020 as prices recover to $80 and supply outside the group stagnates due to spending cuts, according to the International Energy Agency.

Oil today stands at around $50 a barrel, having more than halved since June 2014 after global supplies dramatically rose due in large part to the U.S. shale oil boom but also due to the unlocking of huge offshore reserves in Brazil, Africa and Asia.

The regulators gave a negative classification to $372.6 billion out of $3.9 trillion in loans impacted by the review, or 9.5 percent of the loans. Classified loans increased 9.4 percent from a year ago.

“There are a lot of gas projects under development in the world, and that will drive demand for more ships,” Kim said Oct. 28. “Growing environmental concerns also are pushing demand for more gas-powered power plants, which means there will be more demand for gas.”

"If both countries agree on the discount, progress can be achieved on the Turkish Stream Natural Gas Pipeline project, which both countries will benefit from economically"