Scope 3

Purpose of this module

The Scope 3 module within NZC Portal is designed to support operating companies in measuring, managing, and reporting indirect emissions across their value chain in line with the GHG Protocol.

The module provides a structured approach to Scope 3 data collection, quality management, and reporting across relevant categories.

What this module supports

This module enables users to:

• Track Scope 3 emissions across relevant value chain categories
• Manage data quality, estimation methods, and assumptions
• Engage suppliers and monitor data completeness over time
• Produce consistent Scope 3 disclosures for reporting and target setting

Key inputs

The module typically draws on:

• Activity and spend data across Scope 3 categories
• Supplier-provided emissions and activity data where available
• Emission factors and estimation methodologies
• Configuration aligned to organisational boundaries and categories

Inputs can be managed using a mix of primary data, estimates, and supplier engagement depending on data maturity.

Key outputs

The module produces clear, decision-ready outputs, including:

• Category-level Scope 3 emissions dashboards
• Data quality and coverage summaries
• Exportable reports aligned to GHG Protocol and SBTi requirements
• Evidence packs and audit trails supporting assurance

Outputs can be generated at site, business unit, or organisational level.

How this module is used in practice

Typical use cases include:

• Establishing and improving Scope 3 inventories over time
• Supporting SBTi target setting and tracking
• Engaging suppliers on emissions reduction
• Preparing Scope 3 disclosures for regulatory and voluntary reporting

How this module fits within NZC Portal

The Scope 3 module integrates with energy management, transport, waste and water, and carbon reporting modules within NZC Portal.

This ensures:

• Consistent treatment of direct and indirect emissions
• Alignment between Scope 3 reporting and Net Zero strategy
• Clear traceability from data inputs to reported outputs