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CO 2 e All -30.4% Total use of domestic wood has been reduced substantially according to DUKES (to reflect the findings in the Defra solid fuel combustion survey) and the conversion factor is a weighted average for all users. Section 9 Refrigerants and other No significant changes Section 4
1. Major Changes to the Conversion Factors The following table provides a summary of major changes in conversionfactors for the 2021 Greenhouse Gas (GHG) Conversion Factors, compared to the equivalent factors provided in the 2020 GHG Conversion Factors, and a short explanation for the reason for the change. We have considered
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factor. 34. Table 13: Heat/Steam CO. 2. emission factor for DUKES 1/3 2/3 method.....35. Table 14: Related worksheets to passenger land transport emission factors.....38 Table 15: Average CO. 2. emission factors and total registrations by engine size for 2002 to 2018 (based on data sourced from SMMT)
- Overview
- Conversion factors 2023: condensed set (for most users) - updated 28 June 2023
- Conversion factors 2023: full set (for advanced users) - updated 28 June 2023
- Conversion factors 2023: flat file (for automatic processing only) - updated 28 June 2023
- Conversion factors 2023: methodology
- Conversion factors 2023: major changes
- Details
These emission conversion factors are for use by UK and international organisations to report on 2023 greenhouse gas emissions.
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Update: June 2023
There are 3 sets of conversion factors: condensed set: this abridged version of the full set is easiest to navigate and most frequently requested. Recommended for most, and new, users of conversion factors full set: contains all available factors for the selected year. Recommended for advanced users only due to the volume of information flat file set (only available from 2014): contains same data as the full set but designed for use in automated processes. Not recommended for most users The methodology paper explains how the conversion factors are derived. New users: read the introductory worksheet in the latest condensed set of conversion factors, and the guidance at the top of each individual worksheet. Regular users: read the ‘what’s new’ sheet which highlights the significant changes for that update: this will ensure consistent and comparable reporting year-on-year. Defra’s Environmental reporting guidelines provide more detail. Published Last updated 28 June 2023 + show all updates Due to a minor error in the version published earlier this month, we have updated a small number of factors for Passenger Vehicles in the advanced set, condensed set, and flat file spreadsheets. These are the factors for cars (by size), using unknown fuels or plug-in hybrid EVs. Further details are in the relevant conversion factors spreadsheets. 7 June 2023 Print this page
11 miles x 1.609347 = 17.70281 km. The first significant digit of the metric value (1) is equal to the first significant digit of the inch-pound value (1). Therefore the number of significant digits to be retained in the converted value is the same as that for the original value (2), and the result is 18 km.
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GWP values for refrigerant HFC blends should be calculated on the basis of the percentage blend composition (e.g. the GWP for R404a that comprises is 44% HFC125, 52% HFC143a and 4% HFC134a is 2800x0.44 + 3800x0.52 + 1300x0.04 = 3260). Carbon factors for fuels (UKPIA, 2004) Notes Emission factors calculated on a Net Calorific Value basis.
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These conversion factors will enable you to convert activity data (e.g. litres of fuel used, number of miles driven, tonnes of waste sent to landfill) into kilograms of carbon dioxide equivalent (CO 2 eq). Carbon dioxide equivalent is a universal unit of measurement used to indicate the global warming potential of one unit of carbon dioxide.
