The Crisis You Can't Afford to Waste: Why New Zealand Industry Must Move Beyond Diesel — and What It Means for Gas

The global energy landscape has shifted dramatically over the six months and New Zealand industry is feeling it. Diesel prices have lurched unpredictably. Supply chains that once hummed quietly in the background have become front-page news – whether its internationally traded commodities like diesel and petrol, or local fuels such as natural gas — a reality that would have seemed extraordinary just a few years ago.

But within this disruption lies a genuine opportunity. The businesses that use this moment to accelerate their transition away from fossil fuels won't just be doing the right thing for the planet — they'll be building a more resilient, lower-cost operation for the decade ahead. 

The Diesel Question: Risk Without the Reward

Let's be honest about where we stand with diesel in New Zealand.

The good news is that physical supply has proven more robust than many feared. New Zealand's position as a small player in a large global market — reliant on a steady stream of modest-sized tankers — has, counterintuitively, provided a degree of insulation. There has been no dramatic national shortfall. The pipeline has largely held.

The bad news is that price is another matter entirely. Diesel costs have remained stubbornly elevated, driven by the difficulty of extracting and moving crude from conflict-affected regions. And there's no credible scenario in which global diesel pricing returns to the comfortable lows of the previous decade. The structural pressures — geopolitical instability, decarbonisation policy, shifting refinery capacity — are not going away.

So the risk profile of diesel dependency looks like this: supply disruption is possible but has proven manageable; price escalation is near-certain and already here. For any business that relies on diesel for process heat, backup generation, or transport, that combination should be deeply uncomfortable.



LNG Debate: Are We Looking at the Right Problem?

New Zealand is currently weighing whether to build an LNG import terminal to shore up gas supply as domestic fields decline. It's a debate that deserves careful scrutiny.

Those who favour an LNG terminal argue it preserves optionality, keeps gas available for industrial users, and manages the dry-year electricity risk that looms over our hydro-heavy grid. These are legitimate concerns.

But there is a stronger argument on the other side.

Building an LNG import terminal is an expensive, long-lived piece of infrastructure that locks New Zealand into global gas markets — markets that are tightening, politicised, and increasingly expensive. Not to mention, more risky than they’ve been in living memory. The capital required to develop that terminal is substantial. And crucially, that same capital could instead be directed toward electrification, renewable heat, energy storage, and efficiency — investments that reduce exposure to volatile international commodity markets rather than deepen it.

The dry-year electricity risk is real, but diesel generation already exists as a viable short-term backstop. Rather than committing to the cost and complexity of LNG import infrastructure, the more prudent path is to use existing diesel capacity as a bridge while systematically reducing overall energy demand and building out renewable alternatives.

The difference is this: one path buys us more time in the fossil fuel system. The other buys us a way out of it.

Natural Gas in New Zealand: Writing on the Wall

Whatever one's view on LNG imports, the trajectory of New Zealand's domestic natural gas market is not ambiguous. The Maui and Pohokura fields are declining. New exploration has slowed. The most recent MBIE stocktake indicates the lowest reserve volumes since records began. Without some step change, the supply of locally-produced gas will continue to contract.

What does that mean for price? History is instructive. When supply shrinks in a market with sticky demand, prices rise — often sharply and discontinuously. We have already seen this dynamic begin to play out in New Zealand's gas market, and the disruption to global energy supply chains over the past two years has provided a vivid preview of what price escalation looks like when it arrives suddenly. With the impending exit of Maui, and therefore Methanex, this price fluctuation will become ever more present, and potentially extreme.

For businesses currently reliant on natural gas — for process heat, space conditioning, or other thermal applications — this is the environment in which their investment decisions need to be made. A feasibility study conducted under today's gas prices may look very different from one conducted under prices five years from now. The businesses that model this risk honestly, and act on it, will be in a fundamentally stronger competitive position.