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What are Scope 3 emissions, and how do you measure them?
Scope 3 emissions are the indirect greenhouse gas emissions across a company's value chain, including purchased goods and services, business travel, employee commuting, transportation, product use and investments.
They are measured by mapping the relevant Scope 3 categories, collecting supplier and portfolio data, filling gaps where necessary, and keeping the source and methodology behind each figure. Using organisation-specific (primary) data instead of relying only on industry averages makes the results more accurate, traceable and easier to defend.
The full guide, What are Scope 3 emissions, and why should your organisation care?, walks through Scope 1, 2 and 3, all 15 GHG Protocol categories, why the data is hard to collect and how to build a first baseline.
Category-level answers: Category 3, fuel and energy related activities, Category 10, processing of sold products, Category 12, end-of-life treatment of sold products and Category 13, downstream leased assets.
DitchCarbon calculates Scope 3 from verified emissions data for over 2 million organisations, built on primary emissions data wherever it exists, with the source and method recorded against every figure. The calculator is verified to ISO 14064-3, limited assurance, by UL Solutions, renewed annually: see the reports in our trust centre.
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