With the authorization, the company will export domestically produced LNG at a rate of up to the equivalent of 1.25 billion standard cubic feet per day (Bcf/d) of natural gas, from the Oregon LNG Terminal in Warrenton, Oregon, for a period of 20 years.

Oregon LNG chief executive officer Peter Hansen said: "This approval allows the largest Asian buyers to purchase from Oregon LNG, which already has authorization to ship to any of the twenty nations with which the U.S. has a FTA.

"DOE approval is an important step towards the development of a project that will improve energy security for many of our country’s key trading partners while simultaneously providing Oregon with significant economic benefits and growth opportunities."

The $6.3bn project, which is subject to environmental review and final regulatory approval, is expected to create more than 3,000 direct construction jobs with specific amounts of project spending to be directed towards small, local businesses.