An overview of the UK DESNZ Emissions Factor Source



The UK Department of Energy Security and Net Zero (DESNZ) releases a comprehensive list of emission factors on an annual basis as well as well as publishing supplementary emissions research and modelling. The annually released dataset is titled the “Greenhouse gas reporting: conversion factors” and is used by UK based organisations to quantify their emissions either for voluntary reporting or for entities required to report under the Streamlined Energy and Carbon Reporting (SECR) framework.

The website for UK DESNZ can be found here.
The website for UK DESNZ can be found here.

Emissions Source Key Info

Full Source Name
UK Department for Energy Security and Net Zero (DESNZ)(Formerly Department for Environment Food and Rural Affairs DEFRA)
Sumday Concise Name
The UK government publishes an annual dataset of conversion factors for greenhouse gas reporting are for use by UK and international organisations to report on greenhouse gas emissions. With each release UK BEIS publish a methodology paper as well as a summary of any changes from the previous versions. These resources can be found online with each year’s release
Source Type
Government/ International Organisation
Most Recent Release Year
Earliest Release Year
Next Expected Release Date
Sumday Take
The UK DESNZ publishes some of the most widely used emissions factors. Although these datasets are used primarily for UK businesses they are often also referred by other jurisdictions as the preferred EF source where local datasets do not have coverage. An example of this is Business Travel Emissions Factors.

Summary of Related Datasets

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Last updated on October 29, 2023