New Zealand is joining forces with the United States, Australia, and Japan in an ambitious project to bring electricity to 70 per cent of Papua New Guinea by 2030.
At present, only 13 per cent of the PNG population has access to electricity.
The announcement was made on the sidelines of the Apec summit in PNG, the smallest and poorest of Apec's 21 economies.
Prime Minister Jacinda Ardern said it signalled a commitment from the four countries to pool their resources and technical expertise.
Ardern joined her counterparts from Australia, Scott Morrison, Japan, Shinzo Abe, and Papua New Guinea, Peter O'Neill for the announcement along with US vice President Mike Pence.