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EV Home-Charging Solar Offset Calculator

Find how much extra solar you need to cover your EV's home charging, from annual miles, vehicle efficiency, charging losses, sun hours, system losses, and your offset target.

Annual miles driven (mi/yr)

Vehicle energy use (kWh/100mi)

Home charging losses (%)

Peak sun hours (daily average) (h/day)

Solar system losses (%)

Share of charging to offset with solar (%)

Solar Energy

Solar Load Calculator

Calculate the total daily energy demand of your home's lighting, appliances, and HVAC to correctly size a solar system. Use this before getting solar quotes to know exactly how many kilowatt-hours per day you need to generate.

Lighting Load (watts)

Appliances Load (watts)

HVAC Load (watts)

Average Daily Usage (hours)

System Efficiency Factor

Key differences

	EV Home-Charging Solar Offset Calculator	Solar Load Calculator
Category	Solar Energy	Solar Energy
Inputs required	6	5
Result	Extra solar capacity for EV (kW)	Required Solar Capacity (kW)
What it does	Find how much extra solar you need to cover your EV's home charging, from annual miles, vehicle efficiency, charging losses, sun hours, system losses, and your offset target.	Calculate the total daily energy demand of your home's lighting, appliances, and HVAC to correctly size a solar system. Use this before getting solar quotes to know exactly how many kilowatt-hours per day you need to generate.