Koojan Downs Soil Project

Koojan Downs Soil Project is a soil carbon project located at Koojan Downs, approximately 22km southwest of the town of Moora and 175km north of Perth in Western Australia. It was registered in March 2021 and covers 6,714.11 hectares. In August 2026, a variation was applied to the project to slightly shift the crediting period start date to September 2021.

Projects registered under the Measurement of Soil Carbon Sequestration in Agricultural Systems methodology involve actively changing land management practices to increase the storage of organic carbon in agricultural soils. This method requires regular measurement of the soil to accurately quantify the volume of carbon sequestered over time.

The Moora and surrounding Yathroo region are situated within the West Midlands area of Western Australia's Wheatbelt. The region is predominantly used for intensive agricultural operations, including cereal cropping (such as wheat, barley, and canola) and livestock farming, particularly cattle backgrounding. The local environment features a Mediterranean climate with an average annual rainfall of approximately 475mm to 500mm. The region's soils are predominantly characterised by deep white and grey sands, alongside loamy soils.

This specific project increases soil carbon by applying nutrients to address a material deficiency. The project proponent, Harvest Road Agribusiness (part of the Tattarang group), manages the adjacent Koojan Downs Feeding Facility, which is a major intensive backgrounding operation capable of holding approximately 20,000 standard cattle units. The carbon project leverages this facility by collecting natural cattle waste and redistributing it as a non-synthetic fertiliser to the surrounding paddocks. This strategy is designed to not only sequester carbon but also improve soil health by increasing nutrient levels and water retention. As a result of these activities, the project is estimated to generate approximately 5,600 Australian Carbon Credit Units (ACCUs) per year over a 25-year period.