Ti Tree Energy Generation Project

Ti Tree Energy Generation Project is a landfill gas operation located at the Ti Tree Bioenergy Facility in Willowbank, Queensland, approximately 15 kilometers south of Ipswich. Registered under the Emissions Reduction Fund in July 2015, the project operates within a significant environmental engineering site: a former open-cut coal mine void that was converted into a waste disposal facility. The project is situated in a region characterized by a mix of heavy industrial usage, including the nearby Willowbank Raceway, and surrounding grazing land.

The project operates under the Carbon Credits (Carbon Farming Initiative, Electricity Generation from Landfill Gas) Methodology Determination 2021. This methodology rewards proponents for capturing methane (CH4) generated by decomposing organic waste, a potent greenhouse gas, and combusting it to generate renewable electricity. By converting methane into carbon dioxide and feeding power into the grid, the project reduces overall atmospheric warming potential and offsets fossil-fuel-based energy. The site utilizes "bioreactor" technology, which recirculates leachate to accelerate waste decomposition and maximize gas production for its generators.

Environmentally, the Willowbank region experiences a humid subtropical climate with a distinct summer rainfall dominance. While the surrounding landscape typically features Vertosols (cracking clay soils) and Chromosols common to the Ipswich area, the project site itself is highly modified land. The facility relies on engineered clay cappings and lining systems to contain the waste within the former mine void, effectively rehabilitating the land while managing environmental outputs.

The project is currently listed with Veolia Environmental Services as the proponent, reflecting the facility's status as a joint venture between Veolia and J.J. Richards & Sons. Historically, the project transitioned from the original Carbon Farming Initiative (CFI) and has undergone administrative changes, including a 2013 participant variation involving LMS Energy. The facility currently generates enough green electricity to power approximately 2,500 homes annually.