The dairy numbers Greenpeace won't put in print
Greenpeace Aotearoa has published a piece calling for an end to the claim that New Zealand produces the world's most emissions-efficient dairy.
The argument is dressed as data-led analysis. Read more carefully, and what you find is selective evidence, a question reframed to get the desired answer, and no reckoning at all with the economic consequences of the policy it is pushing. One is left wondering whether Greenpeace knows exactly what those numbers would show.
Start with the science. The piece by Greenpeace suggests the efficiency claim rests on a single industry-funded study and that the lead researcher would not himself stand over the findings. Neither is quite right. The research was conducted by AgResearch scientists Dr Andre Mazzetto and Dr Stewart Ledgard, following methodology aligned with International Organisation for Standardisation standards, and covering 55 per cent of global milk production. New Zealand came in at 0.74 kilograms of CO2 equivalent per kilogram of fat and protein corrected milk, against a global average of 1.37. That is a 46 per cent gap. The researcher's stated caveat was about comparing data sets that use different methodologies across different countries, which is a standard note of scientific rigour, not a retraction of the finding.
The Fonterra-Australia comparison that Greenpeace cites warrants closer inspection too. Fonterra's own sustainability data shows New Zealand suppliers at 1.04 kilograms of CO2 equivalent per kilogram of milk against 0.88 for Australian farms. That is a real difference, and the sector should close it. But critically, as Dairy Global reported, the gap is partly explained by Fonterra's new methodology, which now accounts for deforestation-linked land clearing and peatland carbon emissions in the New Zealand figures. These are not the same as the operational farm emissions measured in the global AgResearch study. Both New Zealand and Australia remain at the lower end of emissions intensity by global standards. Neither comparison says what Greenpeace claims it says.
Greenpeace also enlists Nestlé as a witness for the prosecution. What Nestlé’s global procurement lead for dairy, Bruno Spire, actually said at an industry conference in 2024 is rather more measured. He told New Zealand farmers that the country has low emissions but not the lowest, and that European and North American barn-based systems have more scope to deploy technology to cut their footprint further. He was explicit that he was not calling for conversion to a more confined farming model. His conclusion: New Zealand is well positioned, but needs continuous improvement. He also offered Nestlé’s own summary of the commercial relationship: “No farmers, no milk, no Nestlé business.” That is a major customer pushing a supplier to keep getting better. It is not the damning verdict Greenpeace implies.
The deeper problem with the Greenpeace framing is the question being asked. Greenpeace argues that measuring emissions per kilogram of milk is the wrong metric, because it fails to capture the value created per unit of CO2 emitted across the whole economy. This is not an unreasonable point in isolation. It becomes dishonest when deployed to suggest that New Zealand should move away from dairy without accounting for what dairy actually contributes, and what would replace it.
What the transition would actually cost
The DairyNZ State of the Dairy Nation Pulse Report for the 2024 to 2025 season recorded a record 27.15 billion New Zealand dollars in export earnings. According to New Zealand's Ministry for Primary Industries, dairy alone accounts for 35 per cent of goods exports and more than one in four of every export dollar earned. The sector directly employs just under 55,000 people. In rural districts such as Waimate, one in three jobs is tied to dairy. In the West Coast region it accounts for 14.4 per cent of regional GDP, and 13.8 per cent in Southland. These are not figures for a peripheral industry.
Greenpeace's preferred alternative is what it calls ecological farming, anchored in diversified agroecology and organics. New Zealand's organic sector is growing and that growth is welcome. It also generated around 1.18 billion dollars in exports in 2024. That is less than five per cent of what dairy earns in a year. No plan is offered for how the other 26 billion dollars gets replaced, or what happens to the farming families and rural towns during any transition. This matters enormously when New Zealand is already running a current account deficit of approximately 27 billion dollars, a gap that dairy is one of the few sectors large enough to materially affect.
The question Greenpeace will not answer
There is a comparison conspicuously absent from the Greenpeace narrative. New Zealand dairy farmers have received no direct production subsidies since the sweeping agricultural deregulation of the 1980s. EU dairy farmers, by contrast, collectively receive billions of euros in annual direct payments under the Common Agricultural Policy, a system that simply has no equivalent in New Zealand. American farmers operate under federal margin coverage programmes. New Zealand producers compete for global market share without any taxpayer cushion. Calling this industrial welfare, as Greenpeace's framing implies, gets the story precisely backwards.
The dairy sector faces genuine environmental obligations on water quality and methane, and the industry is investing in solutions. What it does not need is a campaign that treats the choice between reform and elimination as obvious, while refusing to show the arithmetic of what elimination would mean for workers, rural regions, and the broader economy.
Greenpeace has every right to make an argument for a different farming future, but that argument should come with honest numbers. Right now, it does not.
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