Our Methodology
The gold standard in travel emissions calculation
Transparent, audited, and updated in real-time. Download our latest methodology or see how our engine automates these calculations for your business.
Current Methodology
Thrust Carbon's methodology is a 'living' methodology, designed to reflect new advances in carbon calculations as quickly as possible. We are believers that clients' data should reflect this, and - where they have live data-feeds - they should aim to recalculate their data as close to their reporting date as possible to ensure all data conforms to a specific methodology version.
- Methodology Philosophy
- Methodology Overview (1st October 2025)
- Notes for auditors (6th November 2023)
Looking for an older version?
January 2025
December 2023
September 2023
November 2022
Pre-April 2022
Methodologies prior to April 2022 are not available as separate documents. There were only minor changes made between the first methodology and April 2022, with those changes tracked in the document's changelog.
Methodology is only half the battle
Manually calculating carbon is prone to error and takes weeks. Our platform applies this exact methodology to your data in seconds.
Turning businesses into climate leaders
Related Articles
Rail emissions: making sense of operator-specific data
While rail is one of the most sustainable ways to travel, not all journeys are equal. Finding the lowest carbon routes can be challenging when operator data isn’t published like-for-like.
Read
What does the EU Omnibus I mean for sustainability reporting?
EU Omnibus I, adopted on 13 November 2025, introduces major simplifications to sustainability regulations under CSRD and CSDDD, reshaping which businesses must report and what they must disclose.
Read
Climate Compliance Checklists: Simplifying your Sustainability Journey
Step-by-step guidance that demystifies complex regulations and sets you up for sustainability leadership
Read