UK Greenhouse Gas (GHG) Reporting: Conversion Factors 2019

As an update to the earlier article: UK Greenhouse Gas Reporting: Conversion Factors 2018, the United Kingdom Department for Business, Energy and Industrial Strategy (BEIS) has published its Greenhouse Gas (GHG) Conversion Factors 2019, which are set at Version 1.01 (as at 24 October 2019).

These GHG emission conversion factors can be used to report on 2019 Greenhouse Gas emissions by UK-based organisations of all sizes, and for international organisations reporting on UK operations.

The Department provides three sets of conversion factors, namely:

Condensed set:
This data set is the most popular version. It provides an abridged version of the full set of factors, designed to reduce the volume of information users have to navigate through to find the factors they want. It is recommended for most, and new, users of conversion factors. Download here

Full set:
This data set of factors contains all of the available factors for the selected year, and is recommended for advanced users only due to the volume of information presented. Download here

Flat file set:
This data set contains the same information as the full set, but arranged for automated processing only. This set can be downloaded here

A methodology paper explaining how the conversion factors are derived has been published to support this data set. Download here

A further document describing the major changes, such as those greater than 5% for Scope 1 and 2 emission sources (applies to most fuel and electricity sources) and greater than 10% for Scope 3 (applies to most other emission sources), is available for download here

Please note that all the data sets for 2019 are timed to expire on 31 June 2020, when a new data set for that year (2020) will be published.


  1. Review whether your business has a compliance obligation or wishes to voluntarily report on its Greenhouse Gas (GHG) emissions in the year 2019.
  2. Download the relevant data set; Condensed Set recommended for New Users or the Full Set for Advanced or Repeat Users.
  3. Apply the relevant GHG Conversion Factors in relation to your reporting using the 2019 Data Set until 31 June 2020 at the latest
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