This was revealed following a site visit by NiuPower Joint Venture owners Kumul Petroleum Holdings Limited and Oil Search limited.
Deputy Prime Minister, Charles Abel, was also on the tour.
NiuPower Project Director, Michael Krause, said the project is 80% complete and will handed over early next year.
“The plant will be handed over to NiuPpwer’s ownership in the first quarter of next year and then be available to provide reliable low cost, clean energy, to the grid for the Port Moresby business sector and the public,” he said.