This estimator converts energy exported through vehicle-to-grid service into an approximate loss of available driving range. It uses the vehicle’s usable battery capacity, rated or observed full-battery range, exported energy, and a reserve adjustment.
The calculation helps drivers decide how much V2G participation is compatible with their next trip. Because range depends on weather, speed, route, and accessory use, the result should be treated as a comparable-condition estimate.
1. Enter usable capacity
Use the battery energy actually available for driving.
2. Enter a comparable full range
Choose rated range or your own observed range, then keep that basis consistent.
3. Add exported energy
Enter the battery energy removed during the V2G event.
4. Apply a reserve adjustment
Increase the range-loss estimate to reflect conservative trip planning.
5. Review remaining range
Compare the result with the distance and conditions of the next journey.
The formula assumes energy consumption per kilometer remains constant.
The result estimates how many kilometers of full-battery range are unavailable after the V2G export.
It does not predict route-specific consumption or guarantee arrival range.
Given: 75 kWh usable capacity, 450 km full range, 10 kWh exported, and 10% reserve adjustment.
Calculation: Base loss = 450 × (10 ÷ 75) = 60 km. Adjusted loss = 60 × 1.10 = 66 km.
Result: The V2G event represents an estimated 66 km range reduction for conservative planning.
Real-world range is usually better for trip planning. Rated range is useful for standardized comparisons.
It adds a planning margin to the calculated range loss without changing the exported-energy value.
The calculator limits battery-side export to usable capacity because more energy cannot be removed from a full battery.
Only if the exported-energy input is already measured at the battery. Meter-side energy may require a separate conversion-loss adjustment.
Range loss translates exported energy into distance, while charging time estimates how long it takes to restore the energy.