Caboolture Landfill Gas Project

The Caboolture Landfill Gas Project is a waste sector project located at the Caboolture Waste Management Facility, approximately 5km west of the Caboolture town centre and 50km north of Brisbane, Queensland. Registered in July 2015, the project operates under the Carbon Credits (Carbon Farming Initiative-Landfill Gas) Methodology Determination 2015. The project area encompasses the active landfill cells managed by the Moreton Bay Regional Council, situated in a peri-urban region characterized by waste management infrastructure, light industry, and surrounding forestry and grazing land.

The project involves the capture and combustion of methane gas generated from the decomposition of legacy and non-legacy waste. Methane is a potent greenhouse gas, and by collecting it through a system of wells and pipes, the project prevents it from venting into the atmosphere. The captured gas is directed to a 2.1 MW renewable power station designed, built, and operated by project partner LGI Limited. This process converts the methane into carbon dioxide (which has a significantly lower global warming potential) and generates dispatchable renewable electricity for the local grid.

Environmentally, the Moreton Bay region experiences a humid subtropical climate with high rainfall, typically averaging around 1,000mm to 1,200mm annually. The soils in the surrounding coastal lowlands are generally comprised of texture-contrast soils such as Dermosols or sandy-loam Kandosols, which can vary in drainage capability. A notable feature of this project is the installation of a Siloxane Removal System (SRS) in 2018, a technology pioneered by LGI Limited at this site to clean the biogas, thereby reducing maintenance costs and improving the efficiency of the power generation units. The project transitioned from the earlier 'CFI' legacy waste method and successfully completed a carbon abatement contract (CAC752641) in 2022.