ARCHIVE: Greenhouse gas (GHG) conversion factors
The purpose of the greenhouse gas (GHG) conversion factors is to help businesses convert existing data sources (e.g. utility bills, car mileage, refrigeration and fuel consumption) into CO2 equivalent emissions by applying relevant conversion factors (e.g. calorific values, emission factors, oxidation factors).
These greenhouse gas conversion factors should be used alongside guidance on how to measure and report your greenhouse gas emissions to help you measure and report on the greenhouse emissions that your organisation is responsible for.
Current GHG conversion factors - updated October 2010
- Guidelines to Defra / DECC’s Greenhouse Gas Conversion Factors for Company Reporting (Excel 1.2 MB)
- Guidelines to Defra / DECC’s Greenhouse Gas Conversion Factors for Company Reporting (PDF 1.6 MB)
These factors were updated on 06/10/2010 to correct small errors in annexes 6, 7 and 9. Please see the introduction for more details of the changes since version 1.0
Older GHG conversion factors
Greenhouse Gas (GHG) conversion factor methodology papers
- For further explanation on how these emission factors have been derived, please refer to the GHG conversion factor methodology papers
Page last modified: 11 October 2010