Billabulla Soil Carbon Project

Billabulla Soil Carbon Project is a soil carbon sequestration project located on the "Billabulla" property, approximately 20km north-northwest of Warren in the Orana region of New South Wales. Registered on September 16, 2024, the project covers a project area of 2,685 hectares within the larger agricultural holding. The property sits on the Macquarie River floodplain, a region characterized by mixed farming operations, particularly cattle grazing and cropping.

The project operates under the 2021 Soil Carbon methodology (Measurement and Models). This method requires landholders to implement new or materially different management activities to increase soil organic carbon levels over time. A baseline measurement is taken, and credits are issued based on modeled and measured increases in soil carbon stocks. For this specific project, the registered activity involves applying synthetic or non-synthetic fertilizers to address nutrient deficiencies, which facilitates better plant growth and root biomass accumulation, thereby sequestering carbon.

Environmentally, the Warren district is classified as semi-arid with a long-term average rainfall of approximately 450mm, though the area is subject to extreme variability ranging from severe drought to significant flooding. The soils at Billabulla are described as a mix of heavy grey vertisol (self-mulching clays) on the floodplains and red loams on higher ground. The proponents, Rod and Kate Mildner, are long-term practitioners of holistic management and time-controlled grazing, having managed the property with a focus on flood resilience and biodiversity for over two decades.