SQUAKE Integration Docs
  • 🍃Overview
  • ✉️Contact form
  • ⚠️Incident form
  • 🗄️Calculation API Examples
    • 🌐Travel
      • 🛌Accommodation
        • Accommodation: SQUAKE
      • 🚌Bus
        • Bus: SQUAKE
        • Bus: DEFRA 🇬🇧
      • 🚗Car
        • Car: ACRISS
        • Car: DEFRA 🇬🇧
        • Car: EEA 🇪🇺
        • Car: EPA 🇺🇸
      • 🤝Event
        • Event: HCMI & CHSB
      • ⛴️Ferry
        • Ferry: ADEME 🇫🇷
      • ✈️Flight
        • Flight: ADEME 🇫🇷
        • Flight: Base Empreinte 🇫🇷
        • Flight: CO2 emissiefactoren 🇳🇱
        • Flight: DEFRA 🇬🇧
        • Flight: EPA 🇺🇸
        • Flight: GATE4
        • Flight: ICAO
        • Flight: TIM
        • Flight: TU Chalmers 🇸🇪
      • 🏨Hotel
        • Hotel: DEFRA 🇬🇧
        • Hotel: HCMI & CHSB
        • Hotel: SQUAKE
      • 🚆Train
        • Train: ADEME 🇫🇷
        • Train: Base Empreinte 🇫🇷
        • Train: CO2-emissiefactoren 🇳🇱
        • Train: DEFRA 🇬🇧
        • Train: SQUAKE
    • 📦Logistics
      • ✈️Air Freight
        • Air Freight: DIN EN 16258
        • Air Freight: GLEC
      • 🛥️Inland Waterways
        • Inland Waterways: GLEC
      • 🚧Logistics Site
        • Logistics Site: GLEC
      • 🚈Rail Freight
        • Rail Freight: DIN EN 16258
        • Rail Freight: ECTA
        • Rail Freight: GLEC
      • 🚚Road Freight
        • Road Freight: DIN EN 16258
        • Road Freight: GLEC
      • 🚢Sea Freight
        • Road Freight: Clean Cargo
        • Road Freight: DIN EN 16258
        • Road Freight: EMSA 🇪🇺
        • Road Freight: GLEC
      • 🚛Van
        • Van: EEA 🇪🇺
  • 🆕Notable Changes
    • 📊Calculation Changes
      • Events according to HCMI - 2024 updates
      • Train according to CO2 emissiefactoren - energy scope inclusion
      • Train: SQUAKE - April 2025 Update
      • Bus & Train According to DEFRA are Now Available
      • Base Empreinte for Flights and Trains Now Live
      • TIM Transition to Version 2.0
      • TIM & DEFRA: Distance Changes
      • Airline Code Support Update - December 2024
      • GLEC v3.1
      • Car: DEFRA is Now Available
      • Hotel: DEFRA is Now Available
      • Hotel: HCMI - 2024 Updates
      • Accommodation - September 2024 Updates
      • Bus: SQUAKE - September 2024 Update
      • Flight: DEFRA - July 2024 Update
      • GATE4 Methodology is Now Available
      • GLEC, ECTA, and CLEAN-CARGO November 2023 Update
      • Flight: ICAO v13 - July 2024 Update
      • TIM v1.3
      • Train: SQUAKE - August 2024 Update
  • 💡Use Cases
    • Fulfillment with API
    • Fulfillment with Self-Checkout
    • Webhooks
    • Webhooks API Reference
  • 🕵️Audits
    • Retrieve the list of Audit logs
    • Retrieve a specific Audit log
  • 🧑‍💻Migration Guide
    • From v1 to v2
  • ❓Sustainability FAQs
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  1. Notable Changes
  2. Calculation Changes

Bus & Train According to DEFRA are Now Available

Bus & Train DEFRA Methodology Live 2024

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Last updated 1 month ago

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The DEFRA 2024 methodology for bus and train carbon emissions is now live in the SQUAKE API. It includes:

  • Updated emission factors for local buses (London/non-London), coaches, and train services.

  • Energy scopes: Supports Tank-to-Wheel (TTW) and Well-to-Wheel (WTW, default) emissions.

  • Granular classification: Differentiates transport modes for improved accuracy.

Users can now retrieve DEFRA-compliant emissions data for both buses and trains via the API. For details, see .

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UK Government GHG factors