Warwick Landfill Gas Project

The Warwick Landfill Gas Project is a landfill gas capture operation located at the Warwick Waste Management Facility, approximately 7km west of the township of Warwick in Queensland’s Southern Downs region. Registered on February 9, 2025, the project is a partnership between the proponent, LGI Limited, and the Southern Downs Regional Council. The facility serves the local community's waste disposal needs, situated within the Darling Downs, an area heavily utilised for agriculture, particularly grazing and cropping.

The project operates under the Carbon Credits (Carbon Farming Initiative, Electricity Generation from Landfill Gas) Methodology Determination 2021. This methodology incentivises the installation of gas collection systems to capture methane, a potent greenhouse gas generated by decomposing organic waste, that would otherwise vent into the atmosphere. While the method focuses on electricity generation, it often facilitates initial flaring (combustion) of the gas to ensure commercial viability and immediate abatement, with the potential to transition to renewable power generation. In this specific case, LGI has installed a customised biogas management system, including an LGI250 flare, to combust gas from both legacy and non-legacy waste.

Environmentally, the Warwick region experiences a warm temperate climate with sub-tropical influences, characterised by warm, humid summers and cool, dry winters. The average annual rainfall is approximately 670mm, predominantly falling in the summer months. The surrounding landscape of the Darling Downs is renowned for its fertile soils, particularly black cracking clays (Vertosols), though the landfill site itself sits on designated waste management land.

A key feature of this project is its "win-win" commercial model for the local council. The system was designed and installed by LGI at no cost to the Southern Downs Regional Council or its ratepayers. Instead, the project generates revenue through the creation of Australian Carbon Credit Units (ACCUs), a share of which is returned to the council as royalties. Additionally, the project significantly reduces odour issues for the local community and improves local air quality by destroying methane and other trace gases.