Emission Factors
Emission factors from TGO / DEFRA / IPCC, each tagged with source + version, plus organization-specific Custom EF at Tier 2/3
EF filtering matched to each activity type and Scope
Every figure is traceable to its source — no verifier push-back
Renewable electricity (REC / I-REC) supported for market-based Scope 2
GCarbon's emission factor library is built so every figure can prove its origin — the strictest condition verifiers impose.
Standard libraries plus your own values
Factors from TGO / DEFRA / IPCC carry source and version on every value. A versioning system (EmissionFactorVersion) preserves history as sets update, and Custom EF at Tier 2/3 supports organization-specific processes with GHG Protocol data quality tiers.
The system picks for you
EFs are filtered automatically to match each activity type and Scope — no manual digging through TGO tables. Renewable electricity (REC / I-REC) is supported for market-based Scope 2.
Update once, recalculate everywhere
When TGO publishes a new factor set, the system recalculates historical data wholesale while preserving prior values for comparison — last year's report stays intact, this year's uses the latest science.