Making responsible choices for your company travel requires insight, especially if you're doing sustainability reporting.
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Here's everything you need to know about the travel emissions data we provide for you and your company.
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| Calculation principles 🧮 | To use the latest and most accurate data, we use principles produced by the GHG Protocol. They provide the Corporate Accounting and Reporting Standard that is used by major companies worldwide. |
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| Conversion factors 👩🏽💻 | Our current dataset is based on DEFRA's greenhouse gas reporting conversion factors. We use this data to calculate the emissions from each part of your trip. |
| Data points 📈 | We base your calculations on the following datapoints: |
Flight emissions
| Haul | Haul calculation | Emission Factors | Example | Note | Source |
|---|---|---|---|---|---|
| Short-haul | Flights under 500km | Economy (0.244 kg/km) | A 1000km flight is considered medium haul and emits 153 kg CO2 in economy class | Flight emissions include the RFI (Radiative Forcing Index) to account for the greater impact of high-altitude emissions | DEFRA 2020 Emission Conversion Factors |
| Medium-haul | Flights between 500km and 3700km | Economy (0.153 kg/km) | |||
| Business Class (0.229 kg/km) | |||||
| Long-haul | Flights over 3700km | Economy (0.139 kg/km) First Class (0.557 kg/km) |
Other emissions
| Formula | Factor | Example | Source | |
|---|---|---|---|---|
| Hotel | CO2e Emission factor x Number of nights | 31kg CO2 per night | A 3-night stay results in 93kg CO2 emissions | Global hotel emission averages |
| Dining | CO2e emission factor x Number of meals | 3kg CO2 per meal | Three meals daily for 3 days equals 27kg CO2e | Global food industry averages |
| Car | CO2e emission factor x Distance in km | Diesel (0.168 kg/km), Petrol (0.174 kg/km), Hybrid (0.116 kg/km), Electric (0.057 kg/km) | A petrol car driving 100km emits 17.4kg CO2e | DEFRA 2020 Emission Conversion Factors |
| Bus | CO2e emission Factor x Distance in km | Local bus (0.103 kg/km), Coach bus (0.027 kg/km) | A 50km coach bus ride emits 1.35kg CO2e | DEFRA 2020 Emission Conversion Factors |
| Rail | CO2 emission factor x distance in km | National (0.037 kg/km), International (0.005 kg/km), Light Rail (0.030 kg/km) | A 200 km national rail trip emits 7.4 kg CO2e. | DEFRA 2020 Emission Conversion Factors |