"The project contains unprecedented potential upside for Papua New Guinea. Its economy is forecast to hit a record 21 percent growth rate in 2015 on the back of the project, with the government expecting to bank 1.7 billion to 2.2 billion kina ($621 million to $803 million) per year until early next decade.
That figure will soar to 4.5 billion kina, boosting total revenue by 40 percent from 2014 before construction of a second $12 billion LNG project, expected to boost the economy further when work begins around 2017 or 2018.
ExxonMobil and its partners - Oil Search Ltd, Santos Ltd, Japan's Nippon Oil Corp and the PNG government - are looking to expand the plant, but have yet to decide where to source the additional gas."
That's an earlier projected construction start date for Total than what has been cited in one or more other places, I believe.