Understanding Reforms and Managing Risk of Australia's Greenhouse Gas and Climate Change Reporting Requirements

Abstract Australia's oil and gas (O&G) sector is navigating an increasingly complex climate policy landscape as the country pursues net-zero emissions by 2050. This paper examines the Commonwealth and state GHG legislative, regulatory, and policy framework affecting the sector, tracing its evolution from emissions reporting (under NGER) toward demonstrating emissions performance and credible decarbonization pathways through the strengthened Safeguard Mechanism, mandatory climate-related financial disclosures, and Federal and state environmental approval regimes. It compares GHG assessment approaches across Queensland, NSW, Victoria, Western Australia, South Australia, and the Northern Territory, highlighting convergence around emissions quantification, an avoid–reduce–substitute–offset hierarchy, and net-zero alignment, alongside significant variation in prescriptiveness and regulator discretion. Particular attention is given to recent Queensland Land Court rulings (notably Waratah Coal v Youth Verdict), which have raised the bar for Scope 3 accountability, carbon budget consistency, and human rights considerations, with implications extending nationally. The paper situates this regulatory architecture within the climate-related financial risk disclosure (CRFD) process, arguing that Australia's GHG framework increasingly provides the evidentiary basis for quantifying transition risk. It also presents a practical summary of decarbonization methods available to O&G operators — electrification, methane management, carbon capture and storage, low-carbon fuels, and digital optimization — assessed against benefits, challenges, and approval risk. The paper concludes that transition risk is increasingly less about the survival of demand and more about sustaining competitiveness and demonstrating a credible, financially resilient emissions reduction trajectory. O&G proponents face materially similar convergence between project-level approvals and company-level disclosure internationally, and Australia's example provides a robust test for proponents weighing final investment decisions.