Dairy sector grapples with methane reduction targets as 2030 deadline looms

New Zealand’s dairy sector is under increasing pressure to deliver on methane reduction commitments as the 2030 deadline approaches, with industry leaders warning that current technology may not be commercially viable at scale. Fonterra and other major processors are investing heavily in feed additives and breeding programmes, but farmers remain sceptical about the costs.

• Dairy sector must reduce methane emissions by 10% from 2017 levels by 2030
• Fonterra investing $200m in emissions reduction technology over next three years
• Feed additives like seaweed supplements showing promise but remain expensive
• Genetic selection programmes targeting low-emission cattle underway
• Farmers face potential carbon pricing from 2025 under government proposals

The clock is ticking for New Zealand’s largest export earner. With less than four years until the methane reduction target kicks in, dairy companies are scrambling to implement solutions that work both environmentally and economically.

Fonterra chief executive Miles Hurrell says the co-operative is “all in” on meeting the targets, announcing a $200 million investment programme focused on feed additives and genetic selection. “We’re not just talking about this anymore – we’re putting serious money behind it,” Hurrell told industry leaders at last week’s Dairy Industry Awards.

The centrepiece of current efforts involves seaweed-based feed supplements, which early trials suggest can reduce methane emissions by up to 30% per animal. However, the economics remain challenging for farmers already facing squeezed margins.

“At $400 per cow per year, these supplements would cost me more than my annual fertiliser bill,” says Waikato dairy farmer Sarah Mitchell, who runs a 350-cow operation near Te Awamutu. “The maths just doesn’t work unless we see significantly higher milk prices.”

Technology promises, economic realities

AgResearch is leading trials of Asparagopsis seaweed across 15 commercial farms, with results expected by year-end. Principal scientist Dr Mark Shepherd says early data is “encouraging” but warns against over-optimism about rapid deployment.

“We’re seeing genuine reductions, but scaling this up to 4.8 million dairy cows presents logistical challenges we’re still working through,” Shepherd explains. Supply chain issues around seaweed cultivation and processing remain significant hurdles.

Meanwhile, genetic selection programmes are targeting naturally low-emission cattle. According to DairyNZ, the finding showed breeding values for methane emissions can vary by up to 20% between individual animals within the same herd.

Livestock Improvement Corporation is now incorporating methane data into its breeding worth calculations, with genetic gains expected to deliver 5-8% reductions over the next decade. “It’s slower than feed additives but more permanent and cost-effective long-term,” says LIC general manager Simon Worth.

Carbon pricing pressure builds

The government’s proposed agricultural emissions pricing scheme, set to begin in 2025, adds urgency to reduction efforts. Treasury estimates suggest dairy farmers could face costs of $2,400-$4,800 per year for an average 150-cow herd.

Federated Farmers dairy chairman Wayne Langford argues the timeline is unrealistic. “We support the goal but question whether pushing ahead without proven, affordable solutions serves anyone’s interests,” he says.

The stakes extend beyond individual farm economics. New Zealand’s dairy exports earned $22.8 billion last year, making methane reduction critical for maintaining market access as international buyers increasingly demand low-emission products.

European retailers are already requiring emissions data from suppliers, while California has indicated it may restrict imports from high-emission producers from 2028. “This isn’t just about domestic compliance – it’s about protecting our competitive position globally,” warns Rabobank agricultural analyst Emma Higgins.

With technology still developing and costs uncertain, the dairy sector faces its biggest environmental challenge since the introduction of nitrogen limits. Success will require unprecedented coordination between farmers, processors, researchers and policymakers – with the global reputation of New Zealand dairy hanging in the balance.