Calculator

EV Charging Solar Calculator

By NerdVolt Editorial TeamJune 16, 2026Estimate tool

Accuracy note: The arithmetic on this page is deterministic from your inputs. Solar production, code, utility, incentive, and savings outputs are estimates unless you supply exact equipment specs, tariffs, shade data, and local requirements.

Inputs

Miles driven per dayEV efficiency (kWh/100 mi)Charger voltage (V)Charger current (A)Electric rate ($/kWh)Solar kWh per kW-year

Result

How this is calculated

EV kWh/day = miles/day × kWh per 100 miles ÷ 100. Charger kW ≈ volts × amps ÷ 1000. Charge time = kWh needed ÷ charger kW. Added solar kW = annual EV kWh ÷ annual kWh per kW solar.

Sources

DOE: how to charge electric vehicles