EV Home vs. Public Charging Cost Calculator

Home charging cost per mile is calculated by dividing your electricity rate (cents per kWh) by your vehicle's efficiency (miles per kWh). For a vehicle that travels 4 miles per kWh at an electricity rate of $0.15 per kWh, the cost is $0.0375 per mile, or about 3.75 cents per mile. The average US electricity rate is approximately $0.16 per kWh. Most EV owners charge overnight on a Level 2 home charger and spend $40 to $80 per month on added electricity costs.

Public DC fast charging is significantly more expensive than home charging. Charging networks like Electrify America and EVgo typically charge $0.43 to $0.56 per kWh for DC fast charging. At $0.48 per kWh for a vehicle using 4 miles per kWh, the cost is $0.12 per mile, compared to roughly $0.04 per mile at home. Tesla Supercharging rates vary but are typically competitive with other DC fast charging networks. Home charging remains the most cost-effective option for regular use.

Yes. Many utilities offer time-of-use rates that charge significantly less during off-peak hours (typically nights and weekends). Charging during these windows can reduce home charging costs by 30% to 50% compared to peak-hour rates. Most EVs allow you to schedule charging to begin during off-peak periods. Contact your utility provider to ask about EV-specific rate plans, which are available in many US states and can provide additional savings.

For most US drivers, yes. At average US electricity and gasoline prices, EVs typically cost 40% to 60% less per mile to fuel than comparable gasoline vehicles. The exact comparison depends on your electricity and gas rates, vehicle efficiency, and driving patterns. This calculator lets you input actual local prices for an accurate comparison for your specific situation. Fuel cost savings are a primary financial justification for EV ownership beyond the purchase price premium.