What are scope 3 emissions and why are they important?

Scope 3 emissions are indirect greenhouse gas emissions that occur in a company's value chain, including both upstream activities (purchased goods, transportation) and downstream activities (product use, end-of-life treatment). They're important because they typically represent 70-90% of an organization's total carbon footprint, making them essential to address for meaningful climate impact.

How can companies measure scope 3 emissions accurately?

Companies measure scope 3 emissions through a combination of supplier-specific data collection, industry average emissions factors, and life cycle assessment methodologies. The most accurate approach involves direct engagement with suppliers to obtain primary emissions data, supplemented by spend-based calculations and process-based modeling for areas where primary data is unavailable.

What role does renewable energy play in scope 3 reduction?

Renewable energy plays a critical role by decarbonizing the electricity consumption across a company's supply chain. When organizations help suppliers transition to renewable energy or invest in renewable energy projects in regions where suppliers operate, they directly reduce the emissions associated with producing their goods and services.

How long does it take to see results from scope 3 initiatives?

Initial measurement and baseline establishment typically take 6-12 months, with meaningful emissions reductions becoming evident within 18-36 months of program launch. However, the timeline varies significantly based on supply chain complexity, supplier readiness, and the specific reduction strategies employed. Long-term programs spanning 5-10 years typically deliver the most substantial and sustained results.

corporate carbon footprint

Scope 3 Emissions Reduction: Mars, Meta & L'Oréal Case Study

Learn how Mars, Meta, Patagonia and L'Oréal achieved scope 3 emissions reduction through renewable energy and data analytics. See their results.

Freddy Agudelo

22 Mar 2026 — 1 min read

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