GHG Accounting – Emissions Measurement

GHG Accounting is the foundation of credible climate action, providing organisations with accurate, verifiable data on their greenhouse gas emissions across all operational boundaries. At SESG, we deliver comprehensive GHG accounting services that measure Scope 1, Scope 2, and Scope 3 emissions using the globally recognised GHG Protocol Corporate Standard, enabling your organisation to establish baselines, track progress, and report with confidence.

Why GHG Accounting Matters

As climate disclosure requirements intensify worldwide, robust GHG accounting has become essential for regulatory compliance, stakeholder transparency, and strategic planning. In Australia, mandatory climate-related financial disclosures under AASB S2 require organisations to report emissions data that is accurate, complete, and aligned with recognised methodologies. Internationally, frameworks such as the International Sustainability Standards Board (ISSB) and the Task Force on Climate-related Financial Disclosures (TCFD) expect organisations to demonstrate a thorough understanding of their emissions profile. Without reliable GHG accounting, organisations cannot set meaningful reduction targets, measure the effectiveness of mitigation initiatives, or meet the growing expectations of investors, regulators, and customers.

Our Approach to GHG Accounting

SESG provides end-to-end GHG accounting services tailored to your organisation’s size, sector, and operational complexity. Our process begins with defining organisational and operational boundaries, selecting appropriate consolidation approaches, and identifying all relevant emission sources. We then conduct detailed data collection, quality assurance, and emissions calculations across all three scopes. For Scope 1, we quantify direct emissions from owned or controlled sources including fuel combustion, process emissions, and fugitive releases. Scope 2 covers indirect emissions from purchased electricity, steam, heating, and cooling. For Scope 3, we map and measure emissions across your entire value chain, including upstream supply chain activities, business travel, employee commuting, waste disposal, and downstream product use. Our team applies rigorous calculation methodologies, emission factors, and data verification processes to ensure that your GHG inventory is accurate, transparent, and audit-ready.

From Data to Actionable Insights

Effective GHG accounting goes beyond simply measuring emissions. Our team analyses your emissions profile to identify hotspots, prioritise reduction opportunities, and develop practical decarbonisation pathways. We help you establish science-aligned targets, benchmark performance against industry peers, and build the data infrastructure needed for ongoing monitoring and reporting. Our GHG accounting services also support climate scenario analysis and transition planning, ensuring that your emissions data feeds directly into strategic decision-making processes.

Getting Started with GHG Accounting

Whether you are measuring your emissions for the first time or refining an existing inventory, SESG provides the technical expertise and practical guidance needed to deliver reliable results. Our GHG accounting engagements are designed to integrate seamlessly with your existing reporting systems and governance frameworks, minimising disruption while maximising the value of your emissions data. Contact our team to discuss how we can support your organisation in building a robust and credible GHG accounting capability that meets regulatory requirements and drives meaningful climate action. We work across all sectors and scales to deliver emissions measurement you can trust.