Estimate the cost of one electric car fast or home charge.
The energy a charge adds equals the battery capacity times the percentage gained, inflated by charging losses. The cost is that energy times the electricity rate. Charging from near-empty at a home rate is typically far cheaper per charge than topping up on a fast charger away from home.
EV Charging Cost
Energy = battery x (target - current)% / efficiency; cost = energy x rate
Energy = battery x (target - current)% / efficiency; cost = energy x rate The energy a charge adds equals the battery capacity times the percentage gained, inflated by charging losses. The cost is that energy times the electricity rate.
Charging from near-empty at a home rate is typically far cheaper per charge than topping up on a fast charger away from home.
This calculator takes 5 inputs: Battery size, Stored energy, Target charge, Electricity rate, Charging efficiency. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.