Scope 2 Emission Factor Library

Free downloadable CSV of 23 Scope 2 grid emission factors covering the US, UK, EU, and major international regions. Sourced from EPA eGRID 2023, IEA 2023, UK DEFRA 2024, and EEA 2023.

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Download the factor library

23 location-based Scope 2 factors with source, region, vintage, and method. CSV format.

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What the library contains

  • US subregions: WECC, NPCC/RFC/SERC, ERCOT, MRO, US average, CAMX, NWPP
  • Europe: UK, Germany, France, Central, North (Nordic), West, South, EU average
  • Asia-Pacific: APAC average, Japan, Australia, India, China
  • Americas: Canada, Brazil
  • Thermal: generic district steam (global)

Source vintages

All factors cite source (EPA eGRID, IEA, DEFRA, EEA) and vintage (2023 or 2024). Updates are published as source organizations release new vintages. Check back annually or subscribe to product updates.

Related: Methodology library · Scope 1, 2, 3 reporting · Carbon reporting template

Frequently Asked Questions

What factor sources are included?

EPA eGRID 2023 for US subregions, IEA 2023 for country-level international grids, UK DEFRA 2024 for the UK, and EEA 2023 for European Economic Area countries. Each row includes source attribution, vintage, and method.

Is this the same dataset OffGridFlow uses?

Yes. These are the public factors OffGridFlow seeds into its calculation engine for Scope 2 location-based calculations. Additional factor packs (Scope 1 fuels, Scope 3 categories) are documented in the methodology library.

Can I use this for my own spreadsheet-based carbon reporting?

Yes. The CSV is in a standard format with factor_id, region, unit, value, source, and vintage columns. Use it as a starting point. Be aware that spreadsheet-based reporting does not produce an immutable ledger or approval trail — essential for assurance.

How often is the library updated?

Annually, as EPA eGRID, IEA, DEFRA, and EEA publish new vintages. The OffGridFlow methodology version (currently v2026.1.0) tracks which factor vintages are active.

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OffGridFlow calculates emissions using documented GHG Protocol methodology. Reports are drafts; customers are responsible for verification before regulatory submission.