NetNada's Emission Analysis Methodology

Measuring business carbon emissions is the foundation for real corporate climate action. Only with good data and insights will companies be able to implement strategies that benefit the people, profit, and planet.

NetNada assists Australian and global businesses in measuring, reporting, and managing emissions. Our clients include Zip Payments, Merivale, and URM, among many others. This page outlines the methodology behind our carbon accounting platform.

Carbon Accounting Terminology 101

Carbon Dioxide Equivalent (CO2e)

CO2e combines all greenhouse gas emissions into a single metric. It goes beyond just carbon dioxide to include methane, nitrous oxide and other greenhouse gases, providing a standardised way to measure total climate impact.

The GHG Protocol Corporate Accounting and Reporting Standard

The GHG Protocol provides requirements and guidance for organisations preparing a corporate-level GHG emissions inventory. NetNada embeds this standard directly into its platform to ensure compliance and accuracy.

Emission Scopes

Scope 1 — Direct Emissions

Direct emissions from company operations, such as fuel burned in company vehicles and on-site energy generation.

Scope 2 — Indirect Energy Emissions

Emissions from purchased electricity, heat and cooling consumed by the organisation.

Scope 3 — Value Chain Emissions

All other indirect emissions in your value chain, including purchased goods and services, business travel, employee commuting and more. Scope 3 is where all new reporting frameworks are focusing on and where you should spend your resources — it often represents more than 80% of a company's total emissions.

Reporting Standards

Reporting standards are frameworks for disclosing your carbon numbers. Large companies already participate in voluntary frameworks like TCFD and CDP. Mandatory standards are emerging nationally and regionally under ISSB, making robust carbon accounting increasingly essential.

Four-Step Playbook

How NetNada processes your emissions data from collection to actionable insights.

1

Gather

Integration with your software systems — ERP, accounting, travel apps, utility bills — to consolidate all relevant emissions data in one place.

2

Process

Structuring your raw data for carbon measurements with support from our carbon data analysts, ensuring accuracy and completeness.

3

Calculate

Our proprietary algorithm generates your carbon accounts and identifies reduction opportunities across your operations and value chain.

4

Request

Supplier carbon data requests for supply chain transparency, enabling more accurate Scope 3 measurement and collaborative decarbonisation.

Data Verification and Third-Party Audit Readiness

NetNada detects anomalies and flags missing emissions sources to ensure the integrity of your carbon account. Our platform works with auditing firms for certifications like Climate Active or CDP submissions.

You can invite auditors directly to the platform for seamless review. We regularly update our databases to incorporate the latest science and emission factors.

NetNada Carbon Accounting Methodology

Our calculations combine two methodologies — spend-based and activity-based — using a hybrid approach aligned with the GHG Protocol.

Spend-Based Method

The spend-based method of calculating GHG emissions takes the financial value of a purchased good or service and multiplies it by an emission factor — the amount of emissions produced per financial unit.

Approximately 344 categories exist with different emissions factors. These are derived from environmentally extended input-output (EEIO) models depicting resource flows across economic sectors.

Limitation: If you buy a chair, a spend-based approach would only factor in that you bought a piece of furniture, and wouldn't account for whether the chair was made of iron or wood.

Activity-Based Method

The activity-based method uses specific physical units: litres of fuel, kilograms of material, kilometres travelled. This provides more granular and accurate emissions data.

NetNada offers built-in calculators for flights, waste, employee commutes, and events to make activity-based measurement straightforward.

Hybrid Methodology

The hybrid model methodology is recommended by the Greenhouse Gas Protocol, the most widely used carbon calculation standard that has been incorporated into NetNada.

Our pragmatic approach: use the spend-based method to identify emissions hotspots across your operations, then improve accuracy through activity-based data where it matters most.

Understanding Completeness in Carbon Inventory

Comprehensive

Including all significant emissions sources, especially Scope 3 value chain emissions which often represent the majority of a company's footprint.

Actionable

Leading to real climate action — switching energy sources, improving supplier practices, implementing work-from-home policies and more.

Robust

Audit-ready and meeting the demanding standards of reporting frameworks including ISSB, TCFD, CDP and Climate Active.

Full Standard

NetNada Carbon Neutral Certified Standard (NCNS)

Quick Start Definitions

  • NetNada Carbon Neutral Certified Standard (NCNS): All information contained in this document.
  • Carbon Neutral Business Certified label: Certification for businesses meeting the standard.
  • Carbon Neutral Event Certified label: Certification for events meeting the standard.
  • NetNada Approved Certifiers (NAC): Third parties that verify information for large organisations.

Companies must follow the NetNada Carbon Neutral Certified Standard (NCNS), apply for certification, and receive formal approval from NetNada Approved Certifiers (NAC) in order to be licensed to use the Carbon Neutral Certified label.

01

Eligibility

Businesses can pursue certification for corporate entities, subsidiaries, or brands, but not individual products or services. Companies in certain restricted sectors are ineligible.

Non-brand entities like events or film projects may qualify under separate standards.

02

Measurement

a. Measurement Boundaries

For 2024 certification (2023 emissions), entities must track cradle-to-customer emissions for the full calendar year or overlapping fiscal year. Must include all products, services, and business activities. Coverage requirements include all Scope 1, all Scope 2, and 8 of 15 Scope 3 categories.

Note for Finance Firms: Entities with 5%+ revenue from financial holdings must measure Scope 3.15 emissions.

b. Data Requirements

For Scope 1 and 2, actual metered or billed data is encouraged over modelled estimates. Activity data is strongly advised for emissions comprising 5%+ of total footprint. For non-small companies, activity data is required for Scopes 1 and 2 beginning in the second certification year.

Activity data includes litres of fuel, kWh of electricity, kilometres by plane, kilograms of material — providing more accurate measurement than spend-based approaches alone.

c. GHG Measurement and Verification

Three pathways based on company size:

Small Business (below $5M revenue)
  • • Estimate using NetNada Carbon Management Platform or external tools
  • • Submit complete inventory with signed attestation
  • • No third-party verification required
Medium Business ($5–100M revenue)
  • • Generate report via NetNada Platform, external calculator, consultant, or in-house tool
  • • Must comply with GHG Protocol and measurement boundaries
  • • Independent verification not necessary
  • • Submit measurement report and 'good faith' signed confirmation
Large Business (above $100M revenue)
  • • Generate comprehensive report covering methodology, total Scope 1–3 emissions by category, operational data index, emission factor citations, boundary descriptions, and assumptions
  • • Third-party verification required

d. Third-Party Verification Requirements

All verification reports should follow five common principles of carbon footprint verification: relevance, completeness, consistency, transparency, and accuracy.

Verifications must conform to ISO 14064-3, ISAE3000, ISAE 3410, or Corporate GHG verification guidelines from ERT. Reports must specify limited or reasonable assurance level.

Third-party verifier qualifications:

  • • Minimum five years corporate history in carbon accounting/lifecycle analysis
  • • Minimum 25 documented client engagements
  • • Minimum five years auditing corporate GHG footprints of companies over $100M annual revenue
  • • Demonstrated independent control and ownership
  • • Ability to act as unbiased third party
  • • Minimum five years experience with one or more referenced verification standards

e. Renewable Energy Purchases for Scope 2

Renewable Energy Certificates (RECs) that are bundled or unbundled with energy purchases may be used to make 'market-based' adjustments to the total emissions from your electricity consumption.

Requirements: vintage years must be purchased within the certification year or one year prior (e.g., 2022 or later for 2023 emissions), and must be from the same grid subregion as electricity consumption.

f. Corrections to Measurement Reports

Errors or omissions exceeding the 5% materiality threshold require restatement. If restated emissions are lower, the company may bank surplus credits for future years. If higher, companies are encouraged to address shortfalls.

03

Reductions

a. Requirements for Reduction Action Plan

All certification-seeking organisations must develop a Reduction Action Plan. Minimum requirements include at least two initiatives reducing emissions within 12–24 months. For entities exceeding $5M revenue, at least one Scope 3 emissions measure is required. Annual progress reports are needed for recertification.

Science-Based Target Setting

Organisations over $100M revenue must establish a 2030 science-based reduction target covering all emissions. This can be a default 50% reduction from 2023 baseline, a Science-based Targets Initiative endorsed target, or a well-documented sector-specific science-aligned target.

Organisations under $100M revenue are strongly encouraged but not required to set 2030 targets.

b. Checkpoint Year Requirements

2025 Checkpoint Goals
  • • All 2023 Reduction Action Plans complete
  • • Clearly report year-over-year emissions reduction progress
  • • Roughly 50% progress toward 2030 targets (if applicable)
2028 Checkpoint Goals
  • • All 2026 Reduction Action Plans complete
  • • Roughly 80% progress toward 2030 targets (if applicable)

Note: Exact goal mismatches are excusable if pending reduction actions or alternative clear reduction plans are demonstrated.

04

Compensation and Offsets

Certifying entities are required to contribute to greenhouse gas mitigation projects at a level proportional to their measured emissions (all products, services, and operations) by making investments beyond the value chain.

Carbon credit criteria:

  • • Third-party verification required (Gold Standard, Verified Carbon Standard, Climate Action Reserve, American Carbon Registry, European Biochar Certificate)
  • • Vintage year restrictions: 2020–2023 for most credits; 2017–2023 for forestry/land-use
  • • No project start date requirements if vintage year criteria are met

Credits must come from approved project categories. Companies are encouraged but not required to follow suggested allocation targets across their portfolio.

05

Disclosure

Certified companies must publicly disclose the following on the NetNada Brand Profile Directory:

  1. Total annual GHG footprints by Scope 1, 2, and 3
  2. Annual emissions intensity for recertifying entities; historical absolute emissions encouraged
  3. Total annual investment in carbon credits and project types
  4. Certified product or service categories
  5. Reduction action plan summaries and science-aligned targets
  6. Progress toward past reduction plans
06

Advocacy

Certified entities are strongly encouraged to engage in lobbying, education and stakeholder (e.g. customer, supplier, employee, consumer) mobilisation efforts in support of climate solutions.

Activities include:

  1. Climate lobbying at any political level (direct or collaborative)
  2. Internal climate literacy via NetNada Sustainability Academy and staff education
  3. Consumer climate literacy engagement

Re-certifying companies must provide one example of label use in a digital or real-world setting.

Learn More About Our Methodology

Chat with our team to understand how NetNada's carbon accounting methodology can support your organisation's climate goals.

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