Capture and Combustion of Landfill Gas from Saltwater Creek Landfill, Maryborough, QLD

Capture and Combustion of Landfill Gas from Saltwater Creek Landfill is a landfill gas electricity generation project located in Maryborough, Queensland. The project was registered in December 2013 and is operated at a mid-sized regional landfill.

Landfill gas projects utilizing the electricity generation method involve installing a new gas collection system or upgrading an existing one to capture biogas generated by decomposing organic waste. The captured methane is then combusted in a generator to produce dispatchable, renewable electricity, which reduces the greenhouse gas emissions of that gas by 28 times compared to allowing it to vent into the atmosphere.

The Maryborough area features a moist subtropical climate with relatively high, summer-dominant rainfall. The surrounding region's land use is a mix of urban areas, forestry, sugarcane cropping, and cattle grazing on native and sown pastures. The soils in the broader catchment are typically sandy Podosols with low water-holding capacity, alongside Dermosols, Kurosols, and alluvial soils near watercourses.

This project, managed by proponent LGI Limited, transitioned from a revoked Carbon Farming Initiative (CFI) method and continues to capture gas generated at the landfill from both legacy and non-legacy waste. To facilitate this, LGI Limited installed a small 1.7MW generator at the site, which operates with a 30% baseline. The project successfully completed its initial carbon abatement contract (CAC342427) which was established when the project was contracted in December 2013. It has since varied its methodology to the most current 2021 Electricity Generation from Landfill Gas determination.