Carbon accounting provides the foundation for ASRS compliance and drives smarter, science-based decarbonisation strategies.
Businesses are facing growing pressure from investors, regulators, customers, and communities to reduce their environmental impact. At the centre of this pressure is the expectation that businesses are working hard to significantly reduce their greenhouse gas (GHG) emissions. So it follows that measuring GHG emissions is the first and most critical step toward managing your emissions. This is the role carbon accounting can play in every business’ journey towards more sustainable operations.
In simple terms, carbon accounting is the process of calculating an organisation’s GHG emissions, expressed in carbon dioxide equivalents (CO2-e). It captures emissions generated directly by the business, emissions from purchased energy, and – critically – indirect emissions across the value chain.
Understanding your GHG emissions footprint unlocks a range of benefits. It helps businesses identify operational inefficiencies, manage climate-related risks, meet stakeholder expectations, and take the first step toward science-based net zero goals.
Carbon accounting is also the foundation for compliance with Australia’s new mandatory climate reporting requirements.
Mandatory climate reporting: What you need to know
In September 2024, the Australian Government introduced Mandatory Climate Reporting (MCR) legislation under a new framework known as the Australian Sustainability Reporting Standards (ASRS).
These standards are being phased in from 1 January 2025, starting with large entities and expanding to medium and small organisations through 2027.
To comply, businesses must disclose their climate-related risks and opportunities, emission reduction strategies, governance structures, and the financial implications of climate change.
A key aspect of this disclosure involves reporting greenhouse gas (GHG) emissions across three distinct categories, known as scopes.
- Scope 1 covers direct emissions from sources that are owned or controlled by the organisation, such as fuel combustion in company vehicles or manufacturing equipment.
- Scope 2 includes indirect emissions from the consumption of purchased electricity, heating, cooling or steam.
- Scope 3 accounts for all other indirect emissions in a company’s value chain. This can include emissions from purchased goods and services, business travel, freight, distribution, employee commuting, and waste.
For supply chain–intensive businesses, Scope 3 often represents the majority of total emissions and is typically the most difficult to quantify accurately.
That’s largely because Scope 3 includes measuring emissions generated by your suppliers. So to accurately measure your Scope 3 emissions, you need each of your suppliers to provide their own Scope 1 and Scope 2 emissions. That can be a complex and difficult task if your suppliers do not measure or are unwilling to disclose their Scope 1 and Scope 2 emissions. That doesn’t mean it can’t be done though, if suppliers aren’t willing, or able, to supply their actual activity-based emission data, then a ledger-based approach can be looked at.
Under ASRS, entities must report Scopes 1 and 2 in their first year of disclosure. From the second year onward, Scope 3 reporting becomes mandatory. All climate disclosures must be published annually in a Sustainability Report and released on the same date as financial reports with the same standards of external assurance as financial disclosures. Directors are required to confirm the report’s compliance with relevant legislation.
To meet these new requirements, businesses must act early to define emissions boundaries, conduct a financial materiality assessment, collect baseline data, and complete their first carbon accounting compliance process well in advance of deadlines.
And with the Australian Federal Government estimating it will cost large enterprises (Group 1) an average of $1.3 million per year to comply with mandatory climate disclosure, climate reporting is no longer a side task. Rather, it’s a financial and governance issue, and organisations that prepare early will be in the strongest position to respond.
But compliance is just the beginning
The real benefit of carbon accounting is not just in compliance itself, but in how the data can be used to inform action that unlocks commercial opportunities.
An accurate emissions inventory, for example, may reveal gaps where energy waste, supply chain risk, and operational inefficiency can be consolidated to reduce costs or increase resilience.
It also helps organisations align with the growing expectations of lenders, customers, and employees who are increasingly prioritising sustainability. This helps create a competitive edge that enables businesses to attract environmentally conscious clients and capital.
But what separates meaningful reporting from superficial compliance is the ability to take the numbers and use them to shape a forward-looking decarbonisation strategy.
This is where businesses shift from reactive to proactive, and where the real gains are made.
For example, a logistics company that conducts detailed carbon accounting may discover that a significant portion of its emissions comes from last-mile delivery. As a result, their decarbonisation strategy focuses on switching to electric delivery vehicles in metro areas.
This move not only cuts the company’s emissions and reduces fuel and maintenance costs over time, it also provides a point of differentiation that appeals to climate-conscious consumers and businesses that may also be trying to achieve their own Scope 3 emission reductions.
Let’s start with mapping your emissions
At The Growth Activists, we follow a proven seven-step methodology to ensure every carbon accounting engagement produces reliable, actionable insights.
- Determine boundaries
Define which parts of your organisation are included in the assessment. This includes subsidiaries, operations, and any relevant business units across your value chain. - Identify emission sources
Pinpoint all activities within those boundaries that generate greenhouse gas emissions. These typically include fuel use, purchased electricity, travel, freight, waste, and supplier activity. - Select the calculation approach
Choose the most appropriate method for calculating emissions. This may be a spend-based approach for early-stage accounting or a more detailed activity-based method if data is available. - Collect data and emission factors Gather data on relevant business activities – such as fuel consumption or electricity use – and match each activity with a recognised emission factor to calculate CO2-equivalent outputs.
- Apply calculation tools Perform the emissions calculations based on the selected approach to generate emissions totals across Scope 1, Scope 2, and, where possible, Scope 3.
- Create a footprint report
Aggregate the results into a comprehensive carbon footprint that reflects your organisation’s total emissions baseline. This report will inform your compliance and strategic planning. - Identify reduction opportunities
Use the insights from the footprint report to highlight areas for emissions reduction. These may include efficiency upgrades, renewable energy sourcing, process redesign, or engaging with suppliers to identify ways to reduce your Scope 3 emissions.
- Determine boundaries
This methodology is aligned with the Greenhouse Gas (GHG) Protocol (the global standard for measuring and managing greenhouse gas emissions) and compliant with the ASRS framework. It ensures your business not only meets mandatory reporting requirements but also has a credible baseline to build a long-term decarbonisation strategy.
Build your decarbonisation strategy
The act of measuring emissions is a crucial milestone, but it is not the final destination. Once your carbon footprint is understood, the next step is to develop a tailored roadmap to reduce it.
We collaborate with clients to translate their carbon inventory into a practical, credible decarbonisation strategy. That includes setting science-based targets,
developing a detailed action plan, providing hands-on implementation support, establishing robust monitoring and reporting systems, and ensuring actions are aligned with broader ESG and commercial goals.
We also advise clients on whether to include Scope 3 emissions in their initial reporting.
By taking an expert-driven approach, we help businesses move beyond basic compliance to unlock new value through sustainability. We bridge the gap between emissions data and business strategy, helping you prepare for a low-carbon future while enhancing operational performance and stakeholder trust.
Contact The Growth Activists to learn how we can help you understand your carbon footprint and design a decarbonisation strategy ground in science-based targets.
