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API

The GreenCalculus API, by use case

Sourced emission factors and audit-traced calculations for the number you need — every value with its source reference and data version. Free tier, no card.

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Electricity & grid 3

UK Grid Electricity Emission Factor APIlocation-based, sourced to DEFRA & Ember, with its source reference and data version.US Grid Electricity Emission Factors API (EPA eGRID)national and sourced to EPA eGRID, each value with its source reference and data version.Scope 2 Market-Based Electricity APIlocation-based and market-based (RECs, green tariffs) in one call, each with its source.

Calculations 8

PCAF Financed Emissions APIattribution factor, data-quality score and audit trail, each with its source.Embodied Carbon API (EN 15978)each with its source and data version.Scope 3 Spend-Based Emission Factors API (EEIO)EEIO factors from US EPA, UK ONS and Eurostat, each with its source and data version.Freight & Logistics Emissions APIroad, rail, sea and air by tonne-kilometre, container shipping by TEU-kilometre, each with its source.Business Travel Emissions APIpassenger air, rail and road, each with its source and data version.Sea Freight Emissions APIcontainer shipping per TEU-km across GLEC trade lanes, bulk, tanker and Ro-Ro per tonne-km, each with its source.Aviation & Flight Emissions APIshort and long-haul with the radiative-forcing uplift, each with its source and data version.GHG Protocol Scope 1 & 2 APIactivity × a sourced factor, with the full working and scope.

Science & reference 2

IPCC GWP / CO₂e API (AR6)IPCC AR6 and AR5, 100-year and 20-year, each with its assessment-report citation.Refrigerant & F-Gas GWP API (AR6)HFCs on IPCC AR6, each with its assessment-report citation.

Fuels & combustion 1

Natural Gas Emission Factor APIper kWh gross CV, sourced to DEFRA, with its source reference and data version.

Frameworks 1

CBAM Emission Factors APIcement, iron & steel, aluminium, fertilisers, sourced to the EU Official Journal.

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