As we move into winter, New Zealand's fuel supply chain continues to perform well despite operating within a system that remains heavily dependent on imported refined products.
The latest vessel schedules show a healthy flow of fuel arriving at key ports around the country, with Marsden Point once again acting as the primary gateway into New Zealand's fuel network. There are no immediate signs of supply disruption, and motorists can take confidence that the logistics chain remains active and well-stocked heading into the colder months.
That said, the underlying vulnerability of the system has not changed.
Marsden Point Remains The Critical Hub
Marsden Point will receive four fuel vessels during the first half of June.
- PS Sydney arriving from South Korea
- TP Endurance arriving from Japan
- Forever Glory arriving from Malaysia
- Gordons Bay arriving from South Korea
The diversity of supply sources is encouraging. Fuel is arriving from multiple countries across Asia, reducing reliance on any single refinery or export point.
However, the reality remains that every shipment must travel thousands of kilometres before reaching New Zealand consumers.
One weather event, shipping disruption, geopolitical incident, or regional conflict can still have an outsized impact on a nation that no longer refines its own fuel.
The Distribution Network Is Working
The latest vessel movements show fuel continuing to move efficiently around the country.
Tauranga remains extremely active with five scheduled vessel arrivals during June, while Wellington, Nelson, Christchurch, Timaru, Dunedin and Bluff all continue receiving product through coastal distribution.
This coastal shipping network has become increasingly important since the closure of domestic refining operations.
Instead of producing fuel locally, New Zealand now relies on imported product arriving at key ports and then being redistributed throughout the country.
The system works well when everything is functioning normally.
The question is what happens when conditions are no longer normal.
May's Supply Picture
The latest figures from May show where New Zealand's imported fuel originated.
The largest source was:
- Singapore: 5 vessels
- Malaysia: 4 vessels
- South Korea: 4 vessels
Smaller contributions came from:
- Merak, Indonesia
- Brisbane, Australia
- Suva, Fiji
- Noumea, New Caledonia
The figures reinforce a trend we've been seeing for some time. New Zealand's fuel security is increasingly tied to Asian refining centres.
Singapore continues to dominate as the region's major fuel trading and refining hub, while South Korea and Malaysia remain critical suppliers.
Which Ports Received The Fuel?
May distribution data shows where imported fuel was ultimately delivered around New Zealand.
The busiest ports were:
- Tauranga: 7 vessel moorings
- Wellington: 7 vessel moorings
- Marsden Point: 6 vessel moorings
Together these three ports accounted for more than half of all recorded fuel movements.
Regional centres such as Nelson, Bluff, Christchurch and Dunedin continue to play an important supporting role in maintaining supply resilience across the country.
Winter Demand Is Arriving
The next few months will test the system.
Heating demand rises sharply through winter. Freight movements remain strong. Agriculture enters a period of heavy fuel use. Electricity generation often becomes more dependent on thermal backup when hydro inflows come under pressure.
That means fuel inventories become increasingly important.
At present, vessel schedules suggest suppliers are planning ahead and maintaining steady replenishment cycles.
There is nothing in the current data to suggest an immediate supply concern.
The Bigger Picture
The good news is that fuel continues to arrive.
The less comfortable reality is that New Zealand remains almost entirely dependent on foreign refineries and international shipping lanes.
Every vessel listed in these schedules represents not just fuel, but a reminder of how reliant we have become on overseas infrastructure.
The system works.
But it works because ships keep arriving.
As winter begins, New Zealand's fuel supply chain appears stable, diversified and functioning well. The challenge is ensuring it remains that way if international conditions become less predictable.
For now, the tankers are still moving, the ports are still busy, and fuel continues to flow around the country.
That is good news heading into winter.
The longer-term conversation about fuel security, strategic reserves and national resilience, however, remains just as important as ever.
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Dave Trotter is an independent Fuel Compilation Analyst and founder of Marsden Point News Radio. He tracks fuel tanker movements in and out of New Zealand using real-time shipping and port data following the Marsden Point Refinery closure. His work provides a factual, ground-level view of NZ’s fuel supply, focusing on imports, storage, and distribution across multiple ports. Dave publishes regular updates at www.davidtrotter.co.nz and via Telegram.