Tool 11 · Solar + EV

How many solar panels to charge an EV?

Turn EV miles into annual kWh, then estimate the extra solar system size and panel count needed to cover that driving load at home.

InputsEV miles

OutputkW + panels

Privacy100% client-side

EV charging cost Whole-home panel count

Miles driven per month EV efficiency (kWh per 100 miles) Solar production assumption Panel wattage (W)

EV load is often the missing solar input

An EV can add thousands of kWh a year. If you size solar from last year's utility bill before buying the car, the system may be too small for the new driving load.

Use this tool for the EV portion only. For the whole house, add your existing monthly kWh in the panel count calculator and compare the combined result with installer quotes.