Sustainability in Action 2026: New Report from Sweep and Capgemini

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Sweep Named a Leader in IDC MarketScape 2026 for Carbon Management

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Sweep named a Leader in the Verdantix 2026 Green Quadrant for enterprise carbon management

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4 steps to calculate your Scope 3 emissions

Learn how to calculate Scope 3 emissions in four steps, from mapping your value chain and collecting data to improving accuracy and driving action.
Scope 3 guide - 2027
Category
Guides
Last updated
November 05, 2026

For many companies, most emissions occur outside their direct operations. These Scope 3 emissions come from purchasing, transportation, product use, and other activities across the value chain.

Measuring them remains complex. Data is spread across financial systems, procurement tools, suppliers, and external databases. Its quality also varies depending on each supplier’s level of maturity.

This guide presents a four-step approach to help you make progress quickly.

Four steps to move forward

  1. Estimate 
emissions across the value chain
  2. Enrich 
estimates with published data
  3. Engage
strategic suppliers directly
  4. Act
on the largest sources of emissions

Start with broad coverage. Improve accuracy where it matters. Act where your impact is greatest.

Sweep can help

Sweep makes sustainability work for your business. Not the other way round. We connect all your sustainability data and turn it into business intelligence to help you unlock performance – from compliance and risk reduction, all the way to cost-savings, and market differentiation.

With Sweep, you can:

  • Lower costs through real-time tracking and insights
  • Strengthen supply chains with end-to-end visibility and engagement
  • Deliver audit-ready sustainability and climate reporting with confidence
  • Make sustainability intelligence available to everyone to optimize the business
See how we can help you on your sustainability journey