Southern Waste Landfill Gas Upgrade Project

Southern Waste Landfill Gas Upgrade Project is a landfill gas capture project located at Seaford Heights approximately 35km south of the Adelaide CBD in South Australia. It was registered in February 2017 and is operated at the Southern Region Waste Resource Authority (SRWRA) landfill facility across an unspecified project area.

Landfill gas projects operate by installing infrastructure to capture methane generated from the decomposition of organic waste. Under this methodology, the captured gas is combusted, through flaring or electricity generation, to convert potent methane into less impactful carbon dioxide, significantly reducing global warming potential. Because this is an "upgrade" project, it involves improving the efficiency and expanding the capacity of an existing gas collection system to capture emissions from both legacy and non-legacy waste.

The Seaford Heights area sits on the fringe of the renowned McLaren Vale wine region, where surrounding land use is heavily characterized by viticulture, grazing, and increasing urban development. The region experiences a Mediterranean climate with moderate, winter-dominant rainfall, and the local soils are predominantly calcareous or clay-loams.

This project has actively evolved into a broader renewable energy hub. In late 2020, the proponent LMS Energy launched a 600kW solar farm built on the capped portion of the landfill to complement the site's existing biogas power station, aiming to make the facility emissions-neutral while exporting green power to the local grid. Additionally, in July 2020, LMS Energy relinquished 4,399 ACCUs following a self-identified adjustment to ensure the ongoing integrity of the project's crediting, and later transitioned to an updated version of the methodology in September 2021.