Southern Waste Landfill Gas Upgrade Project

Southern Waste Landfill Gas Upgrade Project is a landfill gas upgrade project located at Seaford Heights, approximately 35km south of the Adelaide CBD in South Australia. It was registered in February 2017 and operates over an unknown area size at an active municipal waste management facility.

Landfill gas projects involve upgrading or installing a gas collection system to capture methane gas emitted by decomposing organic legacy and non-legacy waste. The captured gas is then filtered and combusted (such as via flaring or electricity generation) to destroy the potent methane gas and convert it into less harmful carbon dioxide, preventing it from venting directly into the atmosphere.

The surrounding Seaford Heights and McLaren Vale region is historically known for vineyards, livestock grazing, and increasing urban development. The area has a Mediterranean climate with moderate, winter-dominant rainfall, and the local soils are generally a mix of sandy loams, red-brown friable loams, and yellow clays.

This project was contracted by the Commonwealth in December 2018 under Carbon Abatement Contract CAC626984, which was successfully completed in August 2026. As part of its compliance history, the Clean Energy Regulator required the project proponent, LMS Energy Pty Ltd, to relinquish 4,399 Kyoto Australian Carbon Credit Units (ACCUs) in July 2020 due to a self-identified adjustment. Additionally, the project varied its methodology in September 2021 to transition to the Carbon Credits (Carbon Farming Initiative-Landfill Gas) Methodology Determination 2015 (Compilation No. 1).