Emission Factors

This page outlines the emission factor databases used in the software. Our calculators utilise the latest internationally published emission factor databases.

We look after emission factors from global databases updating regularly, so you don't have to. Our scientists bring a robust, comprehensive catalogue of emission factors to your fingertips. You can also import your emission factors.

What are Emission Factors

An emission factor is a coefficient that converts activity data into GHG emissions. It is the average emission rate of a given source relative to units of activity or process/processes.

Global Emission Factor Sources

You can find the global emission factor sources that we created a comprehensive catalogue, which is used in the software below:

Source Region Link Category
DISER Australia https://www.industry.gov.au/data-and-publications/national-greenhouse-accounts-factors Electricity - Grid Mix
EPA USA https://www.epa.gov/climateleadership/ghg-emission-factors-hub Spend-based - https://edg.epa.gov/metadata/catalog/search/resource/details.page?uuid=https://doi.org/10.23719/1517796emi All
GHG Protocol Global https://ghgprotocol.org/ghg-emissions-calculation-tool All
DEFRA UK https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2021 All
MfE New Zealand https://environment.govt.nz/publications/measuring-emissions-detailed-guide-2020/ All
ADEME France https://bilans-ges.ademe.fr/en/accueil/authentification/index/page/downloaddata/siGras/0 All
IPCC Global https://www.ipcc-nggip.iges.or.jp/public/2006gl/pdf/2_Volume2/V2_2_Ch2_Stationary_Combustion.pdf Stationary Combustion
DEWA United Arab Emirates The emission intensity of electricity generated in the United Arab Emirates. Published by Dubai Electricity & Water Authority 2020 - https://www.dewa.gov.ae/en/consumer/Sustainability/sustainability-reports Electricity - Grid Mix
HKEI Hong Kong The emission intensity of grid mix as reported (areas covered by the Hong Kong Electric Company https://www.hkelectric.com/en/sustainability/sustainability-reports Electricity - Grid Mix
UNFCCC Canada The emission intensity of the grid mix is reported. Published in Canada 2021 National Inventory Report (NIR) -https://unfccc.int/documents/271493 Electricity - Grid Mix
AIB Europe https://www.aib-net.org/facts/european-residual-mix Electricity - Grid Mix
Climate Transparency Report (CT) Global https://www.climate-transparency.org/g20-climate-performance/g20report2019 Electricity - Grid Mix
EPPO Thailand The emission intensity of the grid mix is reported. Published by the Energy Policy and Planning Office (EPPO) of Thailand http://www.eppo.go.th/index.php/en/en-energystatistics/co2-statistic Electricity - Grid Mix