Calculate the cost of charging your electric vehicle at home. Enter battery size, charger efficiency, and electricity rate for per-charge and monthly costs.
Charging an electric vehicle at home is one of the most significant advantages of EV ownership — it's both convenient and typically the cheapest way to charge. Home charging costs $0.03–$0.06 per mile compared to $0.10–$0.25 for gasoline. A full charge for a typical EV with a 60 kWh battery costs $6–$12 at average US electricity rates.
Home chargers come in two levels: Level 1 uses a standard 120V outlet and adds 3–5 miles of range per hour. Level 2 uses a 240V circuit and adds 20–40 miles per hour. Both deliver the same per-kWh cost; the difference is speed. Charger efficiency (typically 85–95%) means you draw slightly more electricity from the wall than enters the battery.
This calculator estimates your per-charge and monthly home charging cost based on battery capacity, charger efficiency, and electricity rate. Use it to compare home charging costs against public charging and gasoline to quantify your EV savings.
Home charging is the cheapest fueling option for EVs. This calculator shows exact per-charge costs so you can compare against public charging and gasoline, and factor charging into your monthly electricity budget. This quantitative approach replaces rough estimates with precise figures, enabling facility managers to identify the most cost-effective opportunities for reducing energy consumption.
Cost per Charge = Battery kWh ÷ Charger Efficiency × Rate ($/kWh)
Result: $9.33/charge
A 60 kWh battery at 90% charger efficiency draws 60 / 0.90 = 66.7 kWh from the wall. At $0.14/kWh, each full charge costs 66.7 × $0.14 = $9.33. With 4 charges/month, the monthly cost is $37.33.
At $0.14/kWh and 3.5 mi/kWh efficiency, an EV costs about $0.04/mile. A 30 MPG gas car at $3.50/gallon costs $0.117/mile. Over 12,000 miles/year, the EV saves about $920 in fuel costs alone. Time-of-use pricing can increase savings further.
Many utilities offer EV-specific time-of-use plans with rates as low as $0.04–$0.08/kWh during off-peak hours (typically midnight to 6 AM). Most EVs have built-in charge scheduling to take advantage of these rates, potentially cutting charging costs in half.
Homeowners with solar panels can charge their EV with free electricity, reducing the effective cost per mile to near zero. A modest 4–6 kW solar system can generate enough excess electricity to cover 10,000‒15,000 miles of annual driving.
At the US average of $0.14/kWh, charging a typical 60 kWh EV costs about $9–$10 per full charge. Monthly charging costs are typically $30–$60 for average drivers (12,000–15,000 miles/year), which is 50–70% less than gasoline.
The per-kWh cost is the same, but Level 2 is slightly more efficient (90–95% vs 80–88% for Level 1) because the charging electronics waste less energy. Over a year, Level 2 saves about $50–$100 in efficiency losses.
Most EV owners see their electric bill increase by $30–$80/month, depending on driving distance, electricity rate, and vehicle efficiency. This replaces $100–$250/month in gasoline costs, resulting in net savings.
Charger efficiency measures how much wall electricity actually reaches the battery. A 90% efficient charger drawing 66.7 kWh from the wall delivers 60 kWh to the battery. The 6.7 kWh difference is lost as heat in the charger and vehicle electronics.
Home charging costs $0.03–$0.06/mile. DC fast charging costs $0.10–$0.20/mile. Level 2 public charging costs $0.06–$0.12/mile. Home charging is by far the cheapest option, which is why most EV owners do 80–90% of their charging at home.
If you drive more than 30 miles/day, yes. Level 2 adds 20–40 miles of range per hour, easily replenishing a day's driving overnight. The charger costs $200–$700, installation runs $300–$1,500, and a 30% federal tax credit applies.