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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 Savings Calculator

Calculate monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.

Monthly Solar Production (kWh)

Electricity Rate ($/kWh)

Key differences

	EV Home-Charging Solar Offset Calculator	Solar Savings Calculator
Category	Solar Energy	Solar Energy
Inputs required	6	2
Result	Extra solar capacity for EV (kW)	Monthly Savings ($)
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 monthly bill savings from a solar PV system by multiplying solar production by your electricity rate. Use it to estimate the financial benefit of an installed or planned system month-by-month.