In Sigma Energy Intelligence, a core the full set of conversion factors are maintained, ready for use out the box. They are published by the Department for Business, Energy & Industrial Strategy each year and can be found at the following location (note: the “full set” versions are used).
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The factors are updated around June or July in each calendar year. These are then updated in Sigma Energy Intelligence with an effective date from the start of the calendar year that they relate.
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E.g. the “conversion factors 2019” will be effective from 01/01/2019 to 31/12/2019 and the “conversion factors 2020” will take effect from 01/01/2020. The latest set of factors will prevail until the next version are published by the UK Government. For example, the 2020 factors will remain in effect until around July 2021 when the next set are published. |
Sigma sources the emission factor to use based on the details that have been configured against a commodity. You can find more information on how to change or set these up here. These are then used for any stream of consumption information that relates to that commodity when it is being converted into the resulting emissions. The following emissions factors are used in available within Energy Intelligence and are applied to consumption values to produce one of the following emissions figures.(where they are available and applicable to the corresponding GHG category that has been set):
kg CO2
kg CO2e
Kg N20
Kg CH4
kg CO
Kg SO2
Kg VOC
As the consumption data in Energy Intelligence is stored at the a daily granularity, the effective consumption for each day will be multiplied by the conversion factor in effect that day to derive the emissions value. This means that different conversion factors may be used throughout a reporting period.
The following table provides details of how the conversion factors are sourced for each core commodities that are available out of the commodities box in Sigma, and the default GHG reporting configuration that has been set for them.
Commodity | Unit | Source of Emissions FactorDefault | |||
|---|---|---|---|---|---|
Electricity | kWh | This conversion factor is derived by summing the “uk electricity” conversion factor and the “transmission & distribution” conversion factor together. TabScope: Scope 2 Tab: Transmission and distribution Fuel / Field: T&D- UK electricitySubcategory 1: Electricity: UK | |||
Gas | kWh | TabScope: Scope 1 Fuel / Field: Gaseous fuels / Natural gas Based on the gross kWh valueActivity: Gaseous Fuels | |||
Water | m3 | TabScope: Water SupplyFuel / FieldScope 3 Note: only the CO2e factor is available for water. | Waste | NA | Tab: N/A Fuel / Field: N/AActivity: Water supply |
Diesel | l | Scope: Scope 1 Based on the litres value | Heat | kWh | Tab: Heat and steam Fuel / Field: Onsite heat and steamUnit : l |
Oil | l | TabScope: Fuels Fuel / Field: Liquid Fuels / Gas oil Based on the litres value | |||
Propane | kg | Tab: Fuels Fuel / Field: Gaseous fuels / LPG Based on the tonnes value and then divided by 1000 to give kg. | |||
Steam | kg | Tab: N/A Fuel / Field: N/AScope 1 |