The Avoided CO₂ indicator, shown on the Charging Sessions page of the fleet manager interface, estimates the CO₂ emissions that would have been produced if the distance driven had instead been driven with an equivalent combustion-engine vehicle.
Principle
Avoided CO₂ = Combustion-engine CO₂ − Electric CO₂
Formula
For each charging session: Avoided CO₂ (kg) = energy charged (kWh) × 1.1435
Example
A 40 kWh charging session avoids 45.74 kg of CO₂ emissions, compared to driving the same distance with a combustion-engine vehicle.
Where does the 1.1435 coefficient come from?
Figure | Value | Source |
Emissions of an average combustion-engine car | 0.2142 kg CO₂/km | ADEME Base Carbone® (1) |
Emissions of an electric car in France | 0.0198 kg CO₂/km | ADEME Base Carbone® (2) |
Average electric car consumption | 17 kWh / 100 km | Average observed on the French market |
Calculation: Avoided CO₂ per kWh = (100 / 17) × (0.2142 − 0.0198) = 1.1435 kg CO₂e/kWh
(1) ADEME Base Carbone® — "Car / Average powertrain," 2026 validity; vehicle manufacturing excluded. (2) ADEME Base Carbone® — "Passenger car / Compact / Electric," valid from April 2021; usage phase only, vehicle manufacturing excluded.
Scope
The calculation covers the usage phase only (fuel or electricity consumed while driving) — it doesn't account for manufacturing, maintenance, or end-of-life.
Limitations and assumptions
Estimate — based on national averages, not each vehicle's actual consumption. Still very reliable at fleet level, since it aggregates all vehicles.
France only — relies on the French electricity mix (very low carbon) and doesn't apply abroad.
Substitution assumption — assumes an electric vehicle replaces an equivalent combustion-engine vehicle.