Understand emissions across your value chain

Scope 3 emissions often represent the largest share of an organization’s carbon footprint, but calculating them requires a clear definition of categories, boundaries, methodologies, and data sources.

We help organizations identify material Scope 3 categories, gather available data, and build transparent calculation models. We document assumptions, estimation methods, exclusions, and opportunities to improve data quality.

Who is it for?

This service is designed for organizations that:

• want a more complete understanding of their value chain emissions;
• receive emissions-related requests from B2B customers;
• are preparing for disclosure or data verification;
• want to define targets that include indirect emissions;
• need to identify the most material Scope 3 categories;
• want to improve emissions data quality over time.

Scope of support

• defining Scope 3 boundaries;
• materiality assessment of Scope 3 categories;
• identification of internal and external data sources;
• selection of activity-based, spend-based, or other applicable methodologies;
• documentation of assumptions and estimation methods;
• calculation of agreed Scope 3 categories;
• identification of data gaps;
• analysis of emissions by category, supplier, process, or other agreed dimensions.

Project outcomes

The organization receives:

• Scope 3 emissions inventory;
• assessment of material emission categories;
• editable calculation model;
• documented methodologies, assumptions, and emission factors;
• justification of included categories and exclusions;
• data quality improvement plan;
• identification of major reduction opportunities;
• a basis for emissions-related collaboration with suppliers and customers.

The Synergist approach

We do not hide assumptions or data gaps. Every material estimate is documented, and the model clearly shows where primary data is used and where estimates have been applied. This enables continuous improvement of data quality and accuracy over time.

Experience

We have supported organizations across the financial, manufacturing, and retail sectors in identifying material value chain emissions, selecting methodologies, and developing Scope 3 management approaches.