Horsley Park Landfill Gas Project

Horsley Park Landfill Gas Project is a landfill gas project located at Horsley Park, approximately 40km west of the Sydney central business district in New South Wales. It was registered in December 2012 and operates across an unspecified area boundary associated with the major Veolia Horsley Park landfill facility. The surrounding Western Sydney region is largely characterised by heavy industrial land use, commercial waste management facilities, and peri-urban infrastructure. The area experiences a temperate climate with moderate rainfall, and the local environment is situated on heavy clay soils typical of the Sydney Basin's underlying Wianamatta Shale.

Landfill gas projects operate by capturing methane-rich gas generated by the decomposition of organic waste in landfill sites. To meet standard methodology requirements, projects must actively combust this gas, often through flaring or electricity generation, which converts the highly potent methane into less harmful carbon dioxide, thereby significantly mitigating the site's overall greenhouse gas emissions.

This project transitioned from a revoked Carbon Farming Initiative (CFI) method and continues to capture and combust gas generated from both legacy and non-legacy waste. It is notable for successfully completing a major Carbon Abatement Contract (CAC254087) with the Australian Government in November 2022. Securing this contract in April 2015, the project delivered 282,857 Australian Carbon Credit Units (ACCUs) to the Commonwealth over a 7-year delivery period. Originally managed by Veolia Environmental Services (Australia) Pty Ltd, the project's proponent officially changed to VELMS JOINT VENTURE PTY LTD in May 2026.