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Emission Factor

This guide explains how to select and approve emission factors for your organization using the ESG Management System.

What is an Emission Factor?​

An emission factor is a value that quantifies the greenhouse gas emissions produced per unit of activity (e.g., kg CO₂e per kWh of electricity). Selecting the correct emission factors is essential for accurate GHG reporting.

GHG Emission Factors Doctype​

Each emission factor record includes:

  • Factor Name: Descriptive name (e.g., "Vietnam Grid Electricity 2023")
  • Factor Type: Energy, Transportation, or Other
  • Source Type: Electricity, Gas, Coal, Oil, Biomass, etc.
  • Emission Factor Value: The numeric value (e.g., 0.65)
  • Unit: e.g., kg CO₂e/kWh
  • Scope: Scope 1, 2, or 3
  • Calculation Method: Energy-Based, Distance-Based, etc.
  • Country/Region: Geographic applicability
  • Is Default: Indicates if this is the default factor
  • Is Active: Only active factors can be selected

Steps to Select Emission Factors​

  1. Go to the Emission Factor Selection Screen

    • Navigate to your organization profile
    • Click on "Emission Factors"

  2. Filter by Factor Type and Source Type

    • Choose the relevant factor type (e.g., Energy)
    • Select the source type (e.g., Electricity, Gas, Coal)

  3. Review Available Factors

    • Compare emission factor values and units
    • Check if a factor is marked as "Default" or "Active"
    • Review the reference source and applicable country/region

  4. Select or Approve Factors

    • Click "Select" to propose a factor for your organization
    • An admin or authorized user can "Approve" the factor for official use
    • Approved factors will be used in GHG calculations for your organization

  5. Remove or Change Factors

    • If needed, click "Remove" to deselect a factor
    • You can update your selection as emission factors are updated or new ones become available

Emission Factor Selection Example

Best Practices​

  • Always use the most recent and region-specific emission factors when available
  • Default factors are provided for convenience, but custom or local factors may be more accurate
  • Regularly review and update your organization's emission factors to ensure compliance and accuracy