New Geothermal Fertiliser Plant in Taupō Aims to Slash Leaching and Emissions

Agriculture Minister Todd McClay opens New Zealand’s first low-emissions fertiliser plant in Taupō, using geothermal energy to produce slow-release nitrogen for farmers.

By: AXL Media

Published: May 1, 2026, 4:09 AM EDT

Source: RNZ Pacific

How the "Slow Release" Technology Works

Unlike traditional urea, which dissolves rapidly and often requires repeat applications every 20 to 30 days, Tnue’s product is designed for longevity and precision.

Encapsulation: Regular urea granules are encapsulated in a specialized membrane.

Temperature-Activated: The nitrogen is released progressively through the membrane based primarily on soil temperature.

Longevity: A single application can last between 60 to 90 days, effectively replacing three rounds of standard urea spreading.

Environmental and Operational Benefits