Bunya Landfill Gas Project

Bunya Landfill Gas Project is an electricity generation from landfill gas project located at the Bunya Waste Management Facility in the Moreton Bay Region, approximately 15km northwest of the Brisbane CBD in Queensland. It was registered in April 2014. While the exact project area size is not published, the surrounding region is characterised by a mix of peri-urban residential development, remnant natural reserves, and historical semi-rural grazing lands.

Electricity generation from landfill gas projects involve installing active gas collection systems to extract methane-rich biogas generated by the decomposition of organic waste. Under this methodology, the captured methane, a highly potent greenhouse gas, is combusted in a dedicated power station to produce renewable electricity, thereby preventing harmful emissions while displacing fossil fuel-generated grid power. This specific project continues to capture and combust gas from both legacy and non-legacy waste, and has transitioned across successive methodological variations since its inception to recommence and optimise operations.

The Moreton Bay region experiences a subtropical climate with high annual rainfall, typically exceeding 1,000mm. These moist conditions and warm temperatures are significant for the project as they accelerate the biological breakdown of waste, thereby increasing the rate of landfill gas production. The local soil profile is generally characterised by texture-contrast soils and shallow rudosols or dermosols overlying local Bunya Phyllite rock formations.

A notable feature of this project is its recent technological evolution. In 2023 and 2024, operator LGI Limited integrated a utility-scale Megapack battery with the site's generator. This Queensland-first "renewable hybrid" approach allows the site to store and dispatch renewable energy into the local grid during peak demand hours. The innovation earned the project two major awards, including Excellence in Project Innovation, at the 2025 Institute of Public Works Engineering Australasia (IPWEA) Excellence Awards. Furthermore, the project was part of a successful Carbon Abatement Contract (CAC752641) that completed in May 2022, delivering 313,410 ACCUs to the Commonwealth in combination with the nearby Dakabin and Caboolture landfill sites.