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Emission factors by Scope 1, 2 and 3

Data source provider

Department for Environment Food & Rural Affairs (DEFRA), UK

Use cases

Climate-related disclosures, Exposure quantification, Financial stability monitoring, Investment and lending decisions, Scenario analysis, Stress testing

Data group

GHG emissions

Metric Type


Methodology/ Standard / Classification/ Taxonomy / Reference

1. GHG Protocol Corporate Accounting and Reporting Standard
2. 2006 Intergovernmental Panel on Climate Change (IPCC) Guidelines for National GHG Inventories / Malaysia Biennial Update Report to UNFCCC
3. Annual Greenhouse Gas index

Unit (e.g. CO2)

Vehicle/ fuel/ Diesel emission factor (Tonnes CO2e)

Dimension (e.g. Sector, Customer)

By Pollutant

Time horizon 




Time series




Observation on data availability/gaps

The Emissions Factors Toolkit (EFT) is published by DEFRA and the Devolved Administrations to assist local authorities in carrying out Review and Assessment of local air quality as part of their duties under the Environmental Act 1995 as amended by the Environment Act 2021. The EFT allows users to calculate road vehicle pollutant emission rates for NOx, PM10, PM2.5 and CO2 for a specified year, road type, vehicle speed and vehicle fleet composition.

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