Robinson Sunny Park Coonamble Project

Robinson Sunny Park Coonamble Project is a soil carbon project located approximately 30km south-east of Coonamble in the central-western plains of NSW. It was registered on March 16, 2020, and initially covered an area of 5,436.99 hectares, though this area was varied with certain sections removed in August 2025.

The project operates under the Estimation of Soil Organic Carbon Sequestration using Measurement and Models (2021) methodology. Soil carbon projects involve implementing new or materially different agricultural management practices to increase the storage of organic carbon in the soil over time. For this project, activities include altering the stocking rate, duration, or intensity of grazing to promote soil vegetation cover, applying gypsum to remediate sodic or magnesic soils, and applying synthetic or non-synthetic nutrients to address material deficiencies.

The surrounding Coonamble region is a major hub for agricultural land uses, predominantly wheat cropping, sheep, and cattle grazing. The environmental conditions are semi-arid, characterised by hot summers and a historical average annual rainfall of approximately 505 mm. The dominant soils in this region are Chromosols (red-brown duplex soils) and Vertosols (cracking clays). These soil types provide good agricultural potential but can be susceptible to structural degradation or acidification, making remediation practices like gypsum application highly beneficial.

This project transitioned from the older 2018 soil carbon methodology to the updated 2021 methodology in December 2022. Additionally, the host property, 'Sunny Park', has a rich agricultural heritage in the district; it was historically renowned for housing a prominent Merino sheep stud founded in 1892.