It's Luxon's first whirlwind tour across the Pacific Islands.
It's hoped with the investment, Niue will be able to generate 80 percent of its electricity from renewables.
The man was knocked out by the force.
"We are ready to fly and await approval from French authorities as to when our flights are safe to proceed."
The Foreign Affairs Minister is meeting with new Prime Minister Jeremiah Manele in Honiara.
Video shows Chinese police smashing down doors and arresting about 80 alleged cyber scammers in the Pacific nation.
"This is maybe the most exciting thing I'll ever do in my life."
Water levels around Pacific Islands are rising about 4 millimetres per year in some areas, slightly above the global average.
Swells of up to 4.5 metres high have been inundating coastal areas.