SustainMetrics
Retrieve 18,000+ GHG emission factors from DEFRA, EPA, ADEME and Ember.
Read docs Updated 2026-06-18
What is SustainMetrics?
SustainMetrics is an HTTPS API that returns greenhouse-gas emission factors drawn from DEFRA, EPA, ADEME and Ember, totaling more than 18,000 records.
It supports any application or workflow that requires authoritative emission-factor values for calculations or reporting.
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