Climatiq
source

UK Government (BEIS, DEFRA, DESNZ)

21674 Factors21674 Factor
80 Regions80 Region
1312 Activities1312 Activity

About UK Government (BEIS, DEFRA, DESNZ)

The UK Government issues emission conversion factors for use by UK and international organisations to report on greenhouse gas emissions. The key responsible departments / agencies are / were: BEIS , DEFRA, DESNZ and NAEI.

Visit UK Government (BEIS, DEFRA, DESNZ) website

Datasets from UK Government (BEIS, DEFRA, DESNZ)

Greenhouse gas reporting: conversion factors 2026
Greenhouse gas reporting: conversion factors 2025
Greenhouse gas reporting: conversion factors 2024
Greenhouse gas reporting: conversion factors 2023
Greenhouse gas reporting: conversion factors 2022
Greenhouse gas reporting: conversion factors 2021
Greenhouse gas reporting: conversion factors 2020
Greenhouse gas reporting: conversion factors 2019
Greenhouse gas reporting: conversion factors 2018
Greenhouse gas reporting: conversion factors 2017
Greenhouse gas reporting: conversion factors 2016
UK and England's carbon footprint to 2022
DATASET

Greenhouse gas reporting: conversion factors 2026

PropertyValue
Description
The UK Government issues emission conversion factors for use by UK and international organisations to report on greenhouse gas emissions. The key responsible departments / agencies are / were: BEIS , DEFRA, DESNZ and NAEI.
Source type
Governmental
Original dataset URLURL
Year released
2026
Geography
Multiple regions, Global
Sector
Type of data
Activity-based
Emission results
CO2e - CO2 - CH4 - N2O
Data Transformation
The source reports individual gases in CO2e. The Global Warming Potential (GWP) of each gas is used to derive the individual gas emission factor.

License

PropertyValue
Type of license
Open Government License
License URLURL

Data quality

PropertyValue
Data quality assurance
Vetted by Climatiq. For further information on data quality assurance, see: [https://www.climatiq.io/methodology#Data-Quality](https://www.climatiq.io/methodology#Data-Quality)
Quality flag(s)
NA

Methodology

PropertyValue
IPCC AR method
  • AR4
  • AR5
LCA boundary
  • cradle_to_gate
  • electricity_generation
  • electricity_generation-transmission_and_distribution
  • end_of_life
  • fuel_combustion
  • fuel_combustion-electricity_generation-transmission_and_distribution
  • fugitive_release
  • fugitive_release_non_kyoto
  • gate_to_grave
  • transmission_and_distribution
  • unknown
  • upstream
  • use_phase
  • well_to_tank
Scope applicability
  • 1
  • 2
  • 3.1
  • 3.2
  • 3.3
  • 3.4
  • 3.5
  • 3.6
  • 3.7
  • 3.8
  • 3.9
  • 3.12
  • Outside of scopes
Emissions breakdown
  • Biogenic CO2
  • CH4
  • CO2
  • N2O
  • Other gases (CO2e, AR5)
  • Total (CO2e, AR4)
  • Total (CO2e, AR5)
Methodology description

The dataset contains many different types of emission factors (fuels, electricity, travel, freight for example) and publishes a detailed methodological guide for each type. See https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2025 .

The emission factors undergo a peer review process prior to their publication each year. The source also provides a "major changes" document that lists all significant year-on-year changes in emission factors and explains them.

The emission factors have been published each year for over 20 years and are generally considered to be high quality. They continue to be used globally and are adopted by other governments (e.g. USA, New Zealand) although there is a trend towards using more local emission factors as more governments publish them.

Emission factors use GWPs from AR5 except for bioenergy, hotel stays, and material use emission factors that use AR4. As CO2 tends to dominate emissions this is unlikely to make a signficant difference.

Climatiq has extracted emissions factors from the following flat file: Conversion factors 2026: full set (for advanced users)

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