How to Report Scope 1, 2, and 3 Emissions Under CSRD
Under the Corporate Sustainability Reporting Directive (CSRD), companies must disclose their greenhouse gas (GHG) emissions according to the Scope 1, Scope 2, and Scope 3 framework. These categories, defined by the GHG Protocol and embedded into ESRS E1 – Climate Change, demand detailed reporting, data traceability, and reduction planning.
In this guide, we break down:
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What each scope means
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CSRD's specific disclosure rules
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Calculation methods
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How EcoPrism simplifies Scope 1, 2, and 3 emissions tracking and compliance
Understanding Scope 1, 2, and 3 Emissions
| Scope | Description | Example Sources |
|---|---|---|
| Scope 1 | Direct emissions from owned or controlled sources | Company vehicles, boilers, on-site manufacturing |
| Scope 2 | Indirect emissions from purchased electricity, heating, cooling | Grid electricity, district heating |
| Scope 3 | All other indirect emissions in the value chain | Purchased goods, business travel, product use, waste |
What CSRD Requires for GHG Reporting
Under ESRS E1, CSRD mandates:
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Total GHG emissions (Scopes 1–3) in CO2e, broken down by scope
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Methodology and standards used (e.g., GHG Protocol, ISO 14064)
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Emission factors and calculation logic
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Data quality tiers (direct measurement, estimates, proxies)
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Reduction targets, action plans, and year-over-year comparison
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Assurance-ready documentation of sources and audit trail
📘 EFRAG ESRS E1 Standard – Official PDF
Scope 1 Emissions: Direct Emissions
These are the easiest to track, as they originate from facilities or equipment your organization owns or controls.
Common Sources:
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Natural gas combustion for heating
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Diesel generators
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Company-owned vehicles
✅ Best Practice: Install smart meters and log fuel usage across facilities.
Scope 2 Emissions: Purchased Energy
Indirect emissions from purchased electricity or heat.
CSRD Tip: You must disclose both location-based and market-based Scope 2 emissions.
| Approach | How It's Calculated |
|---|---|
| Location-Based | Uses grid average emission factors |
| Market-Based | Uses supplier-specific factors or contractual instruments (e.g., RECs) |
🔗 CDP Guide to Scope 2 Accounting
Scope 3 Emissions: Value Chain Emissions
Often the largest and most complex, Scope 3 includes upstream and downstream activities.
15 Categories (GHG Protocol):
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Purchased goods & services
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Capital goods
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Waste generated in operations
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Business travel
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Employee commuting
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Use of sold products
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End-of-life treatment
CSRD mandates Scope 3 reporting if material—and expects transparent justification if omitted.
🔗 GHG Protocol Scope 3 Standard
How to Calculate Emissions
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Activity Data
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Fuel consumption (liters, kWh)
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Kilometers traveled
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Spend-based estimates
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Emission Factors
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Default: DEFRA, [IPCC], [EPA]
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Custom: Supplier-specific data
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CO2e Conversion
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Multiply activity × emission factor
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Convert all gases to CO2 equivalent using global warming potential (GWP)
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✅ EcoPrism automates factor mapping and conversion
Example Calculation: Business Travel (Scope 3)
| Activity | Quantity | Factor (kg CO2e/unit) | Emissions (kg CO2e) |
|---|---|---|---|
| Air travel | 50,000 km | 0.252 | 12,600 |
| Train travel | 10,000 km | 0.041 | 410 |
🔍 Total = 13,010 kg CO2e
Common Challenges & CSRD Risk Areas
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Incomplete Scope 3 data
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No clear boundary setting (operational vs. financial control)
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Emission factor inconsistency
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Lack of granularity (aggregated values)
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Missing audit trail/documentation
How EcoPrism Simplifies CSRD GHG Reporting
EcoPrism helps sustainability and finance teams collaborate seamlessly through:
🌍 Automated Scope Calculators – Upload data, choose sector-specific defaults or use primary sources
📥 Emission Factor Library – Updated with EU, GHG Protocol, and national databases
📊 Audit-Ready GHG Ledger – Track source, calculation, reviewer, and data quality tier
🔄 CSRD & ESRS Templates – Structure aligned with E1 disclosure tables, XBRL-ready
📘 Used by companies across manufacturing, retail, logistics, and energy sectors
🔗 Explore EcoPrism GHG Reporting Features »
Real-World Use Case: European Apparel Brand
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Consolidated Scope 1 & 2 from 4 countries
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Used EcoPrism’s spend-based and supplier-factor method for Scope 3
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Identified 64% of emissions in purchased goods (cotton, packaging)
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Set SBTi-aligned target and linked to CDP & SFDR data
🎯 EcoPrism reduced time-to-report by 60% and passed audit review on first cycle
Final Thoughts
CSRD is driving a new era of carbon transparency—and your Scope 1, 2, and 3 reporting is at the core. By getting a handle on emissions calculations, disclosure formatting, and data traceability now, you’ll be ready for audits, investors, and regulators alike.
EcoPrism’s integrated CSRD solution eliminates the manual work and uncertainty, giving you confidence in your climate disclosures.
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