GHG Emissions Inventories & Carbon Footprinting

Corporate Greenhouse Gas Inventory and Reporting Services

Independent GHG emissions inventories across Scope 1, 2 and 3, ISO aligned, audit ready and built to meet Australian regulatory requirements.

Book a Free Consultation How It Works
50+
GHG Inventories Delivered
ISO
14064-3 Aligned Methodology
Scope
1, 2 & 3
Complete Value Chain Coverage
AASB S2
Climate Disclosure Ready
100%
Independent, Unbiased Advice

Know Your Numbers

You can’t manage what you haven’t measured. Our team can build an ISO-aligned Scope 1, 2 and 3 inventory that gives your organisation a defensible, decision-ready baseline.

See Our Process
About This Service

Corporate Greenhouse Gas Inventory and Reporting Services

Accurate carbon footprint measurement is the foundation of every credible net zero strategy. At Aqualis Carbon Advisory, we deliver independent, ISO-aligned GHG emissions inventories across Scope 1, 2 and 3 that give your organisation the data it needs to act with confidence.

Whether you are responding to AASB S2 mandatory climate disclosure requirements, working towards Climate Active certification, or simply need a reliable carbon audit to inform your sustainability strategy, our team provides rigorous, defensible results that stand up to regulatory and stakeholder scrutiny.

We work with corporates, government agencies, property developers, manufacturers and infrastructure owners across Australia to quantify, verify and reduce their carbon footprint. Our greenhouse gas emissions calculation methodology follows the GHG Protocol and ISO 14064, ensuring your inventory is credible, comparable and audit-ready.

What We Measure

Full Scope Coverage: Scope 1, 2 and 3 Emissions

A complete carbon footprint calculator for your business must account for all three emissions scopes. We assess and quantify every category relevant to your operations.

SCOPE 1

Direct Emissions

Fuel combustion, company vehicles, industrial processes and fugitive emissions from your own operations and facilities.

SCOPE 2

Purchased Energy

Indirect emissions from purchased electricity, heat, steam and cooling consumed across all your sites and facilities.

SCOPE 3

Value Chain Emissions

Upstream and downstream emissions including goods and services, freight, waste, business travel, employee commuting, leased assets, processing of products, franchises and investments.

Why It Matters

Why Australian Organisations Need a Professional Carbon Audit

The regulatory and commercial landscape has shifted permanently. A professional carbon audit is no longer optional for organisations that want to remain competitive, compliant and trusted.

Regulatory Drivers

  • AASB S2 mandatory climate-related financial disclosures now require large entities to report Scope 1, 2 and 3 emissions
  • Climate Active carbon neutral certification requires a verified GHG inventory as the foundation of your application
  • Supply chain and procurement requirements increasingly demand supplier emissions data
  • ASX-listed entities face growing investor pressure to disclose and verify emissions

Commercial Drivers

  • Reduce energy costs and operational inefficiencies identified through the inventory process
  • Strengthen your tender responses and ESG reporting with independently verified data
  • Build stakeholder trust with credible, third-party assured emissions disclosure
  • Position your organisation ahead of regulation rather than scrambling to catch up
Our Methodology

Our Carbon Footprinting Process

We follow a structured, four-stage methodology aligned with the GHG Protocol Corporate Standard and ISO 14064-1, ensuring your inventory is robust, transparent and ready for external verification.

01

Scoping and Boundary

We define your organisational boundary, operational boundary and base year in line with GHG Protocol and your reporting requirements.

02

Data Collection

We work with your team to gather activity data across all relevant Scope 1, 2 and 3 categories using a structured data collection template.

03

Inventory Calculation

We apply current Australian and international emission factors to calculate your total carbon footprint using peer-reviewed, defensible methodology.

04

Reporting and Verification

We deliver a comprehensive GHG inventory report and, where required, coordinate ISO 14064-3 third-party verification or peer review.

Why Aqualis

Why Choose Aqualis Carbon Advisory

We are an independent Australian climate advisory firm with deep expertise in GHG accounting, emissions verification and sustainability strategy. We do not sell carbon offsets or renewable energy certificates, which means our advice is always objective, evidence-based and in your interest.

ISO
14064-3 Aligned Methodology
100%
Independent, Unbiased Advice
Scope
1-2-3
Complete Value Chain Coverage
AASB S2
Climate Disclosure Ready

Our credentials include:

GHG inventory methodology aligned with the GHG Protocol Corporate Standard and ISO 14064-1
Verification and peer review capability under ISO 14064-3
Climate Active program knowledge and certified pathway experience
AASB S2 reporting guidance and implementation support
Deep experience across corporate, government, property, infrastructure and manufacturing sectors
Our Services

Our Full Range of Services

Once you have measured your emissions, Aqualis can help you reduce your footprint, achieve carbon neutral certification and pursue a carbon positive future, across all our service areas.

AASB S2 Reporting Prepare mandatory climate-related financial disclosures
Climate Active Certification (Organisation) Achieve carbon neutral certification for your organisation
GHG Emissions Inventories Current page
Life Cycle Assessment Quantify cradle-to-grave environmental impacts of products
Environmental Product Declarations Publish independently verified product sustainability data
Climate Active Certification (Products & Services) Certify your products or services as carbon neutral
Net Zero Strategy Build a credible, science-aligned pathway to net zero
Carbon Offsets Guidance Independent advice on sourcing, evaluating and retiring high-quality carbon offsets
Common Questions

Frequently Asked Questions

Have questions about GHG emissions inventories and carbon footprinting? Here are the questions we hear most often from Australian businesses.

Many organisations begin with Scope 1 and 2 as a practical starting point, since these are typically easier to quantify and are already required under NGER reporting for eligible entities. However, for AASB S2 mandatory climate disclosures and Climate Active certification, Scope 3 measurement is also required. Even where it is not yet mandatory, Scope 3 often represents the largest share of an organisation’s total footprint, sometimes exceeding 70 to 80 per cent, so understanding it early is valuable for strategy and risk management. We can scope your inventory to match your current requirements and build on it over time.
The timeline depends on the size and complexity of your organisation and the availability of your activity data. For most small to medium-sized organisations, a Scope 1 and 2 inventory can be completed within two to three weeks from data receipt. A full Scope 3 assessment typically takes five to six weeks. We provide a clear project timeline and a structured data collection template at the start of every engagement to keep things on track.
We provide a tailored data collection template at the start of your engagement. Typically, we will need twelve months of energy bills (electricity, gas, fuel), vehicle fuel records, refrigerant top-up logs, business travel records, procurement spend or supplier data. We work alongside your finance, operations and facilities teams to gather this information efficiently and minimise the burden on your internal resources.
Verification requirements depend on your purpose. Climate Active certification requires a verified GHG inventory aligned with ISO 14064-3. AASB S2 mandatory climate disclosures are expected to require independent assurance for different entities. Many organisations also seek voluntary third-party verification to strengthen the credibility of their emissions reporting with investors, customers and regulators. Aqualis can conduct the inventory and coordinate verification, or provide peer review of an inventory prepared by another party.
Our GHG inventories are developed in accordance with the GHG Protocol Corporate Accounting and Reporting Standard, ISO 14064-1 for organisational greenhouse gas inventories, and the National Greenhouse and Energy Reporting (NGER) framework where applicable. We apply current Australian Government emission factors published by the Department of Climate Change, Energy, the Environment and Water, supplemented by internationally recognised factors where Australian-specific data is not available.
Get Started

Ready to Measure Your Emissions? Let’s Talk.

Getting started is straightforward. Fill in the form below and one of our consultants will be in touch within one business day to discuss your requirements, confirm the scope of work and provide a fee proposal. There is no obligation and the initial consultation is free.

Get Your Free GHG Emissions Consultation

Complete the form below and we will be in touch within one business day.

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