Managing Scope 3 Emissions Under CSRD – Strategies and Tools

Scope 3 emissions—those indirect emissions that occur outside your company’s walls—are often the largest and hardest to track. Yet under the Corporate Sustainability Reporting Directive (CSRD) and ESRS E1, reporting on Scope 3 is mandatory for most organizations.

Whether your value chain spans five suppliers or 5,000, understanding, calculating, and managing Scope 3 emissions is now essential for CSRD compliance—and long-term climate action.

This guide covers:

  • The 15 categories of Scope 3 emissions

  • CSRD's expectations under ESRS E1

  • Strategies to collect, estimate, and reduce Scope 3 data

  • How EcoPrism automates Scope 3 reporting and improves data quality

What Are Scope 3 Emissions?

According to the GHG Protocol, Scope 3 emissions are indirect emissions not covered in Scope 1 (direct) or Scope 2 (purchased energy). They occur upstream and downstream in your value chain.

ScopeExamples
Scope 1Company vehicles, on-site fuel
Scope 2Purchased electricity
Scope 3Supplier activities, product use, business travel, end-of-life treatment
📘 GHG Protocol: Scope 3 Standard

The 15 Categories of Scope 3

Upstream

  1. Purchased goods and services

  2. Capital goods

  3. Fuel- and energy-related activities

  4. Upstream transportation and distribution

  5. Waste generated in operations

  6. Business travel

  7. Employee commuting

  8. Upstream leased assets

Downstream

  1. Downstream transportation and distribution

  2. Processing of sold products

  3. Use of sold products

  4. End-of-life treatment of sold products

  5. Downstream leased assets

  6. Franchises

  7. Investments

CSRD Requirements for Scope 3 Emissions

Under ESRS E1, companies must:

  • Report on all material Scope 3 categories

  • Disclose methodologies used for estimates

  • Identify data quality (measured, estimated, or proxy)

  • Include upstream and downstream impacts

  • Provide targets and reduction strategies if applicable

📘 Required starting from FY2024 reporting cycles for large companies

🔗 EFRAG ESRS E1 Final Draft

Common Challenges in Scope 3 Reporting

  • Low data availability: Suppliers may not track emissions

  • Inconsistent data formats

  • Estimations vs. actuals: Hard to validate third-party data

  • Engaging small suppliers: Limited awareness or tools

  • Risk of double counting or gaps

Strategies for Managing Scope 3 Emissions

1. Start with Materiality

  • Use ESRS double materiality to prioritize which Scope 3 categories to report

  • Focus first on high-impact areas like purchased goods, transport, and product use

2. Engage Suppliers Early

  • Conduct surveys and workshops

  • Provide ESG training or templates

  • Use third-party platforms to collect data securely

3. Use Spend-Based Estimation

  • If primary data is unavailable, apply industry-specific emissions factors to procurement spend

🔗 UK DEFRA Emission Factors

4. Incorporate into Procurement Policies

  • Make ESG reporting part of supplier contracts

  • Rank vendors based on emissions transparency

5. Set Scope 3 Targets

  • Adopt Science-Based Targets (SBTi) for Scope 3

  • Use category-specific reduction plans (e.g., packaging redesign, logistics optimization)

🔗 SBTi Criteria for Scope 3 Targets

How EcoPrism Simplifies Scope 3 Compliance

EcoPrism is built to help you collect, validate, and report Scope 3 data under CSRD:

🌐 Supplier Collaboration Portal
– Onboard suppliers, assign surveys, collect emissions data in one place
– Integrate with supply chain platforms and procurement software

📦 Spend-Based & Activity-Based Calculators
– Built-in emission factor libraries
– Auto-apply factors to spending and activity data

📋 Category Tracker for All 15 Scope 3 Types
– Auto-tagged disclosure tables per ESRS E1
– Data quality labels (measured, estimated, proxy)

🧾 Audit-Ready Logs
– Track source of every figure
– Export XBRL-tagged Scope 3 sections for CSRD filing

📊 Reduction Dashboard
– Set and track Scope 3 targets
– Visualize impact by supplier, region, or category

🔗 Explore EcoPrism’s Scope 3 Emissions Engine →

Case Study: Consumer Goods Company

  • Over 2,000 suppliers across 14 countries

  • 68% of emissions in Scope 3 Category 1 (Purchased Goods)

  • Used EcoPrism to gather supplier disclosures and apply proxy estimates

  • Created a Scope 3 baseline in 8 weeks

  • Began reduction planning with logistics and packaging redesign

Final Thoughts

Scope 3 emissions are complex—but they are mission-critical for CSRD success. With EcoPrism, your organization can move from uncertainty and Excel sheets to a robust, auditable system that meets EU standards and builds real climate accountability.

👉 Get Control of Scope 3 with EcoPrism’s CSRD Suite »

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