Solar Panels for EV Charging Calculator

Calculate how many solar panels you need to fully offset your EV's electricity consumption and charge from the sun.

☀️ Solar Panels for EV Charging

Daily Driving (km)

EV Efficiency (km/kWh)

Peak Sun Hours (hrs/day)

Panel Wattage (W)

Cost per Watt (per W)

Results

Daily EV Energy8.3 kWh

Panels Needed5

System Size2.0 kW

Est. System Cost2,000

💡 How to Size Solar Panels for EV Charging

Solar panel daily output = panel wattage × peak sun hours ÷ 1000 = kWh per panel per day. A 400 W panel in an area with 5 peak sun hours produces 2.0 kWh/day. Divide your daily EV energy need by this to get panels needed.

Peak sun hours vary by location: sunny regions get 5–7 hours, temperate regions 3–5, and northern regions 2–4. Enter your local peak sun hours for accurate results. System costs vary widely by region — enter your local cost per watt.

50 km/day at 6 km/kWh = 8.3 kWh/day needed. With 400 W panels and 5 sun hours: each panel produces 2.0 kWh/day. Panels needed: 5. System size: 2.0 kW.