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