Wagga Landfill Gas Abatement Facility

Wagga Landfill Gas Abatement Facility is a waste sector project located at the Gregadoo Waste Management Centre, approximately 10 kilometers southeast of the Wagga Wagga central business district in the Riverina region of New South Wales. Registered in August 2013, the project operates within a region characterized by a mix of urban development and surrounding rural land uses, such as grazing and cropping. The area experiences a temperate climate with an average annual rainfall of approximately 570mm, and the local landscape typically features red clay and loam soils, though the project site itself relies on engineered clay capping to seal waste cells.

The project operates under the Carbon Credits (Carbon Farming Initiative - Landfill Gas) Methodology Determination 2015. This methodology involves the installation of a system to capture methane gas generated by the anaerobic decomposition of organic waste in landfill. By capturing this potent greenhouse gas and combusting it, converting methane into less harmful carbon dioxide, the project earns Australian Carbon Credit Units (ACCUs). The facility manages gas from both "legacy" waste (deposited before the scheme commenced) and "non-legacy" waste.

Originally established by AGL Energy Services, the project’s administration was transferred to the Wagga Wagga City Council in July 2019. In 2020, the Council expanded the gas capture network and installed a combustion evaporator unit, an innovative system that uses the captured methane to heat and evaporate leachate liquid, thereby managing two waste byproducts simultaneously. While the facility primarily utilizes flaring and leachate evaporation, the Council's "Net Zero Emissions 2040 Strategy" has previously identified the potential for installing a small-scale (120kW) waste-to-energy generator. The project successfully completed its fixed delivery Carbon Abatement Contract (CAC216640) in May 2022.