Research and analysis

Greenhouse gas reporting: conversion factors 2019

These 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.

• From: Department for Energy Security and Net Zero and Department for Business, Energy & Industrial Strategy
• Published: 4 June 2019
• Last updated: 28 July 2020 — See all updates

Documents

Conversion factors 2019: condensed set (for most users)

MS Excel Spreadsheet, 1.29 MB

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Conversion factors 2019: full set (for advanced users)

MS Excel Spreadsheet, 1.75 MB

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Conversion factors 2019: flat file (for automatic processing only)

MS Excel Spreadsheet, 2.72 MB

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Conversion factors 2019: methodology paper

PDF, 1.78 MB, 129 pages

Conversion factors 2019: major changes

PDF, 321 KB, 22 pages

Details

Corrections

• rigid and articulated HGV factors updated July 2020
• table 4 in the Methodology Paper updated July 2020
• refrigerated HGV factors under the Managed Assets - vehicles category updated November 2019

We provide 3 sets of conversion factors:

Condensed set

Most frequently requested. An abridged version of the full set: the reduced volume of information makes it easier to find the factors you need. Recommended for most, and new, users of conversion factors.

Full set

All available factors for the selected year: recommended for advanced users only due to the volume of information.

Flat file set

Same information as the full set, but arranged for automated processes. Available from 2014 onwards. Not recommended for most users.

The methodology paper explains how the conversion factors are derived. The major changes document summarises the emission factors that have seen the largest changes in the 2019 factors compared to the 2018 factors.

For new users of the conversion factors, we recommend you download the condensed set of conversion factors from the latest available year and read the guidance in the document’s introductory sheet. Then follow the informative text at the top of each conversion factor tab in the output files.

For repeat users of the conversion factors we suggest that you download your preferred factor set and read the ‘what’s new’ sheet before using the conversion factors. This highlights the most significant changes to the conversion factors made in this update. Following the ‘what’s new’ guidance ensures that reporting is consistent and comparable year-on-year.

Defra’s Environmental reporting guidelines provides more detail.

We would be grateful if you could provide feedback to help us improve the conversion factors methodology paper: please complete this short survey.

Published 4 June 2019
Last updated 28 July 2020 + show all updates

1. 28 July 2020

   Update to rigid and articulated HGV factors and table 4 in the methodology paper.

2. 18 November 2019

   Update to managed assets refrigerated HGV category.

3. 9 August 2019

   Methodology paper and major changes document added.

4. 4 June 2019

   First published.