UK Government (BEIS, DEFRA, DESNZ)
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) websiteDatasets from UK Government (BEIS, DEFRA, DESNZ)
Greenhouse gas reporting: conversion factors 2026
| Property | Value |
|---|---|
| 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 URL | URL |
| 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
| Property | Value |
|---|---|
| Type of license | Open Government License |
| License URL | URL |
Data quality
| Property | Value |
|---|---|
| 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
| Property | Value |
|---|---|
| IPCC AR method |
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| LCA boundary |
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| Scope applicability |
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| Emissions breakdown |
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| 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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