Beyond the Pump: How Simeon Brown Can Deliver Fuel Security and an Economy That Fuels Itself

POLICY EDITORIAL  |  ENERGY SECURITY & TRANSPORT 

An editorial for government and policymakers on the strategic role of green hydrogen in securing New Zealand’s economic resilience 

The Vulnerability We Need to Address 

New Zealand’s freight and transport sector sits at the end of one of the longest fuel supply chains in the world. Every litre of diesel that moves a truck across the Bombay Hills, hauls timber out of Nelson, or delivers refrigerated produce to the port of Tauranga has been refined overseas, shipped across thousands of kilometres of open ocean, and priced in a currency and influenced by global market forces we do not control.  

New Zealand consumes approximately 3.9 billion litres of diesel annually, every drop of it imported, none of it refined domestically, representing an import cost of approximately $6 billion per year at pre-conflict prices. That figure has surged well beyond $10 billion at today’s prices. We are entirely dependent on a single fuel type, sourced from a narrow band of geographies, with no domestic alternative and no meaningful buffer against disruption. Successive governments have accepted this as an immutable fact of economic life. 

It is not immutable. And the cost of continuing to treat it as such is no longer a future risk. It is a present reality. 

The war in Ukraine was the first warning. New Zealand diesel prices spiked past $3 per litre, placing pressure on exporters, manufacturers and distributors who had limited means of recovering the increase from their own customers. The price shock landed on a sector already navigating one of its deepest demand-side downturns in recent years. The structural exposure that created it remained entirely unaddressed. 

The second warning is here. The conflict in Iran that began in late February has effectively closed the Strait of Hormuz, the narrow shipping corridor through which roughly one-fifth of the world’s daily oil supply passes. Diesel prices in New Zealand have doubled since the conflict began. Refineries in Singapore, Japan and South Korea, the primary sources of New Zealand’s refined fuel, are reported to have moved to reduced capacity operation. As a small and geographically remote market, New Zealand is not a priority customer. When supply is constrained, larger and closer markets are served first. 

The consequences are no longer abstract. In-country diesel stocks on the ground fell to 18.1 days of cover in late March. Truck stops across the country have run dry. The government has activated a four-phase National Fuel Plan, currently at Phase 1, with higher phases involving voluntary conservation, priority allocation for essential services, and direct intervention in distribution. This is not a price shock. It is a supply crisis. 

Two major geopolitical shocks in four years. The same structural vulnerability exposed each time. The question is not whether this will happen again. It is when. 

Since 1 February, the heavy transport sector has absorbed additional fuel expenditure approaching $200 million, with economy-wide diesel costs up over half a billion dollars over the same period.. The GST component has flowed to the Crown, but the underlying commodity cost has left this economy entirely, supporting no domestic employment, funding no New Zealand infrastructure, adding not a single dollar of productive value here. It is extraction. And it will happen again, unless the underlying dependency is addressed. 

Supply Chain Security as a National Interest 

One answer to this dependency already exists. Green hydrogen, produced from New Zealand’s abundant renewable electricity, is a transport fuel that is made here, priced here, and secured here. It does not transit the Strait of Hormuz. It is not refined in Singapore or South Korea. It is not subject to the currency movements and global market forces that have twice in four years sent New Zealand’s fuel costs surging. For the businesses and operators who move New Zealand’s goods, that distinction is the difference between an economy that controls its own energy destiny and one that remains perpetually exposed. 

Heavy transport makes up less than four percent of New Zealand’s registered vehicle fleet yet accounts for approximately 28 percent of transport diesel consumption. That concentration of fuel dependency creates a disproportionate strategic vulnerability. Sound risk management demands diversification across products, suppliers and geographies. No serious government would manage its defence procurement, its food supply, or its financial reserves with a single undiversified exposure. Yet that is precisely how New Zealand manages its transport energy.  

Hydrogen addresses both dimensions of this failure simultaneously. It introduces product diversification, a domestically produced fuel operating alongside diesel, and geographic diversification, replacing supply chains anchored in the Middle East and routed through contested shipping corridors with production rooted in New Zealand’s own renewable energy endowment. That is an argument for hydrogen that has nothing to do with climate policy and everything to do with basic strategic prudence. 

Some will argue that electrification - specifically the introduction of BEVs - makes this debate redundant. It does not. Electricity today accounts for only around 40 percent of New Zealand’s final energy consumption. The remaining 60 percent comes from liquid fuels, gas, and industrial heat, sectors where direct electrification is making some definite inroads but in many cases is either technically constrained or commercially unviable at scale.

Heavy, long-range freight is precisely such a sector. While battery electric technology is advancing rapidly and has a clear role in urban and short-haul distribution, the energy density, refuelling speed, and payload requirements of long-haul freight make hydrogen the most credible near-term pathway for that task. A hydrogen refuelling station delivers energy at the equivalent of a 3,500 kilowatt charge - which is roughly ten times the rate of the fastest BEV charging available in New Zealand - at the same cost per usable kilowatt hour. It does so without requiring extensive depot charging infrastructure or grid connection upgrades, costs that fall on operators before a single kilometre is driven.  

For long-haul heavy freight, a hydrogen truck refuels in minutes and carries full payload without compromise. Ultimately, the question for government is not hydrogen or electrification. It is how to build a transport energy system that is resilient, diversified, and as far as possible domestically anchored in its energy supply, across all vehicle types. 

Energy security is no longer a niche concern. In a more volatile world, the ability to fuel your own economy is a strategic asset. 

The Infrastructure Is Ready. The Demand Is Waiting. 

New Zealand stands at the forefront of an emerging global industry. The first generation of hydrogen-powered heavy trucks is now coming to market, and New Zealand is uniquely positioned to deploy them at commercial scale. Hydrogen producers including Hiringa Energy, Halcyon Power in Taupō, and HWR in Invercargill, have invested tens of millions of dollars in production and refuelling infrastructure. Operational refuelling stations are already in place in Auckland (two sites), Hamilton, Taupō, Palmerston North, Tauranga, and Christchurch, with a further site in Invercargill opening shortly.

Truck operators including TR Group now have vehicles available for deployment. Original equipment manufacturers including Hyundai, Toyota, GBV, H Drive, and KRW Hydron offer fuel-cell electric vehicles that are fuelled entirely by hydrogen, while CH2NGE provides dual-fuel conversion technology capable of displacing 20 to 40 percent of diesel consumption across existing fleets immediately. 

Deploying this first generation is not simply about the trucks available today. Each successive rollout will bring improvements in both capital cost and operational efficiency — trucks will get cheaper to buy and cheaper to run as the technology matures and volumes increase. New Zealand has genuine domestic engineering and integration capability that positions this country to contribute to successive generations of hydrogen transport technology, building knowledge and competitive advantage with each deployment. That capability will only be realised if the first cohort gets on the road. 

The missing ingredient is not technology. It is the critical mass of demand needed to make the economics of the refuelling network more viable and to set the platform for successive technology improvements. Without sufficient trucks on the road, utilisation remains too low, unit costs remain too high, and the improvement curve that benefits both operators and producers never gains momentum. Government has played a catalytic role in every comparable network technology transition. This is no different. 

The infrastructure exists. The vehicles are coming to market. The producers are ready. What is missing is the policy signal that makes the first movers viable. 

An Economy That Fuels Itself 

New Zealand is producing some of the lowest-cost green hydrogen in the world. That is not yet cheap enough to compete with diesel under normal market conditions - but it is closer than most realise, and the gap is narrowing with every deployment. Hydrogen is competing against a fuel industry with over 150 years of exploration, infrastructure investment and engine development behind it. The distance to parity is not a reason to dismiss it. It is the reason the policy design matters. Scale closes the gap, and scale requires a credible demand signal. 

Some existing policy to support this transition is already in place, but it is geared toward decarbonisation objectives that expect industry to bridge half the cost gap between fossil and renewable fuels.  

In freight transport, where operating margins are already squeezed to the limit, that is not a realistic ask. The funding allocated reflects decarbonisation ambitions and is not scaled to achieve the critical mass that genuine market activation requires.  

The burning platform today is not emissions. It is supply security and economic resilience. The policy needs to reflect that shift in urgency. A clear way for government to signal its commitment to weaning New Zealand off foreign fuel and building the domestic economy would be a commitment to a Sovereign Fuel Fund - a dedicated mechanism funded by redirecting ETS revenue¹ already collected from the transport sector, designed to bridge the gap between imported and domestically produced fuel until the market reaches the scale at which domestic production is permanently competitive. It is not a subsidy. It is a time-limited investment in energy independence. 

The current fuel crisis has done something that years of policy argument could not: it has made green hydrogen commercially competitive with diesel right now. At today’s pump prices, operators who switch to hydrogen are not making an environmental or strategic sacrifice. They are making a sound commercial decision. The problem is that most operators expect this parity to be temporary.  

Fleet investment decisions are made on five-year-plus horizons. When operators look beyond the current crisis and see diesel potentially normalising, they fear the economics will shift back against them, leaving their investment exposed. That expectation, rational as it is, is precisely what is preventing commitment at the scale the market is capable of. The Sovereign Fuel Fund changes that exposure. It does not need to make hydrogen cheaper than diesel. It needs to demonstrate that government stands behind the investment for long enough to reach the scale at which hydrogen is permanently competitive. 

The fund would support all sovereign fuel pathways, including green hydrogen for heavy freight, battery electric for light and urban transport, and sustainable aviation fuel for the aviation sector, recognising that approximately 60 percent of New Zealand’s energy needs today are met by liquid fuels and other non-electricity sources. The more diesel is consumed, the more ETS revenue the fund generates. The more domestic alternatives displace it, the less the fund is needed. It is, by design, self-redundant. 

New Zealand’s freight sector already has a well-established mechanism for passing fuel costs through the supply chain via a Fuel Adjustment Factor (FAF). A sovereign fuel supply replaces the volatility of that mechanism with stability. Government covers the gap between the locally produced fuel and the prevailing diesel price. As diesel prices rise and converge with the cost of domestically produced fuel, support reduces automatically, because the goal is simply to ensure a New Zealand-made fuel is not more expensive than the imported alternative. As production reaches scale and costs converge, the support tapers to zero and government steps back out entirely. 

A fund that grows from the problem it is designed to solve, and shrinks as it succeeds. That is the architecture of a serious energy security policy. 

The Cost of Waiting Is an Opportunity Foregone 

The counterargument to action is familiar: wait for the technology to mature, wait for costs to fall further, wait until the private sector has demonstrated viability without support. In the case of hydrogen transport, it is a false economy — and it misreads where the real opportunity lies. 

New Zealand has already built something of genuine value: production capability, refuelling infrastructure, engineering and integration knowledge, and a first-mover position in a global industry that is only beginning to take shape. Every month without the policy signal to scale is a month in which that advantage erodes. Other countries are not waiting. The window to establish New Zealand not just as a user of hydrogen transport technology, but as a contributor to its development and a potential exporter of its expertise, will not stay open indefinitely. 

The productivity case is equally compelling. The goal of the Sovereign Fuel Fund is not simply to bridge a temporary cost gap. It is to accelerate the point at which domestically produced hydrogen becomes permanently cheaper than imported diesel. Every deployment brings that inflection point closer - through scale, through successive technology improvements, through the operational knowledge that only comes from trucks on the road.  

An economy that reaches that inflection point early gains a structural productivity advantage that compounds over time. New Zealand has the renewable energy endowment, the engineering capability, and the early infrastructure to get there ahead of the field. The question is whether government will provide the signal that sets it in motion. 

A Decision That Is Actually Available 

Energy Minister Simeon Brown has already demonstrated that this government understands the opportunity. The existing hydrogen refuelling network was opened under his first watch, before he shifted to other portfolios. The hydrogen action plan was created. Investment has been committed to trucks and fuel infrastructure. The foundation is in place. 

What is now available is the next step, and the moment for it could not be more compelling. Trucks are coming to market. The fuel exists. The refuelling network spans the country’s most critical freight corridors. The operators are ready. At current diesel prices, the commercial case for switching to hydrogen is not a green argument or a strategic one. It is simply good business. 

What is holding the market back is not cost. It is confidence. Most operators expect the current diesel price spike to be temporary. When it eases, they fear the economics will shift back against them, leaving their fleet investment exposed. This is where government comes in. Not to make hydrogen viable - it already is. But to demonstrate that New Zealand’s commitment to domestic fuel sovereignty is long-term and serious, that investment made now will be protected as the market matures, and that policy settings will not be pulled away the moment the immediate crisis passes. A Sovereign Fuel Fund, backed by ETS revenue from the transport sector, sends exactly that signal. 

Minister Brown has the tools, the track record, and the moment. The fuel crisis playing out right now makes the case more powerfully than any policy document could. The question is not whether the opportunity exists. It is whether government will move to secure it. 

The choice is available. The infrastructure is ready. The moment is now. 

This editorial has been prepared to inform government and policy discussions on hydrogen transport in New Zealand. It draws on programme modelling, industry investment data, and sector consultation as at April 2026. 

¹ About the ETS levy on transport fuel 

The New Zealand Emissions Trading Scheme (ETS) applies a levy to all liquid fossil fuels sold domestically, with the obligation sitting upstream at the point of wholesale fuel import and sale. The levy covers all end uses — road transport, industrial, agricultural, and construction — with the exception of international aviation and marine bunker fuel, which are exempt. At recent carbon prices of $50–70 per tonne of CO₂, the ETS levy has added approximately 14–18 cents per litre to diesel and petrol prices. Applied across New Zealand’s annual diesel consumption of approximately 3.9 billion litres, the transport and industrial sectors contribute an estimated $550–$700 million per year to the Crown through the ETS on diesel alone, with additional revenue from petrol. This revenue flows into the Consolidated Fund and is not hypothecated to any specific purpose. The Sovereign Fuel Fund would redirect a portion of this existing revenue stream back into transport energy security, funding the transition away from imported fuel dependency without requiring new taxation.