New rules mean that companies, state governments and councils can earn carbon credits by installing anaerobic digesters to treat biosolids removed from effluent.
If Labor takes office after Saturday's election, Queensland's laws on impact assessment, planning, water, waste and offsets will likely change, and so too might the approach to drafting and enforcing environmental legislation.
After almost six years as shadow climate and environment minister, Greg Hunt is Australia's new Environment Minister, while Ian Macfarlane will have responsibility for energy.
Shadow environment and climate minister Greg Hunt wants better protection for threatened species, as well as air and water quality improvements, but cautions that governments too often resort to regulation to achieve environmental goals.