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GHG Protocol• 9 min read

What is Scope 1, 2, 3

Complete Guide to the GHG Protocol's Value Chain Emissions Framework

Executive Synthesis

Developed by the World Resources Institute (WRI) and the World Business Council for Sustainable Development (WBCSD), the GHG Protocol Corporate Standard categorizes greenhouse gas emissions into Scopes 1, 2, and 3. While Scopes 1 and 2 capture operational control, Scope 3 accounts for 70% to 90% of an enterprise's total climate footprint.

Understanding Scope 1, 2 & 3 Emissions
Scope 1: Direct Combustion & Chemical Processes
Scope 2: Purchased Electricity & Energy
Scope 3: Upstream Value Chain (Categories 1–8)
Scope 3: Downstream Value Chain (Categories 9–15)
Scope 3 Represents 70–90% of Corporate Emissions
Comparing the Three Scopes: Responsibility & Control
Why All Three Scopes Matter to Business Survival
Executive Synthesis

Key Strategic Takeaways

Scope 1 captures direct combustion, Scope 2 covers purchased electricity, and Scope 3 spans the complete upstream and downstream value chain.

Scope 3 typically represents 70% to 90% of total emissions for industrial, retail, and technology companies.

Under the GHG Protocol Scope 2 Guidance, companies must report both Location-based and Market-based electricity numbers.

Engaging suppliers to collect primary activity data is mandatory to replace punitive spend-based proxy factors.

EnviroWealth Practical Execution

How EnviroWealth Delivers Complete Scope 1, 2 & 3 Accounting

Our carbon accounting engineers map your complete value chain across all 15 Scope 3 categories.

Automated Scope 1 fuel logs and refrigerant leakage audit modeling
Dual-method Scope 2 tracking (CEA grid factors + open-access PPA allocation)
Supplier primary carbon data collection platform and automated screening
Scope 3 materiality ranking and reduction roadmap design
Frequently Asked Questions

Do we have to calculate all 15 Scope 3 categories?

No. A company must conduct a Scope 3 materiality screening to identify which categories are relevant. Typically, 3 to 5 categories (such as Cat 1 Purchased Goods, Cat 4 Inbound Logistics, and Cat 11 Use of Sold Products) constitute over 90% of a company's total Scope 3 footprint.