Emission Factor Sources
Discover where emission factors come from and how they vary across regions and industries
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Section 3 of 5Where Do Emission Factors Come From?
Emission factors are derived from scientific research, government data, and industry studies. They represent the average emissions associated with specific activities, based on extensive measurement and analysis.
Scientific Research
Based on peer-reviewed studies and laboratory measurements of combustion processes and chemical reactions.
Government Data
National environmental agencies collect and publish factors based on regulatory reporting requirements.
Industry Studies
Sector-specific research provides detailed factors for manufacturing processes and supply chains.
Interactive Regional Factor Comparator
Compare emission factors across different regions and fuel types. Select up to 3 regions and choose different fuel types to see how factors vary based on local energy mixes.
Common Factor Sources
- • EPA (US Environmental Protection Agency)
- • DEFRA (UK Department for Environment)
- • European Environment Agency
- • IPCC Guidelines
- • GHG Protocol
- • ISO 14064 Standards