Home charging costs less than gas, but the price depends on your local electricity rate

Charging an electric car at home typically costs between $0.03 and $0.05 per mile, compared to $0.10 to $0.15 per mile for a gas car. That math comes from dividing your local electricity rate by how efficiently your car converts power into distance. A car that travels 3 miles per kilowatt-hour (kWh) charged at $0.14 per kWh costs about $0.047 per mile. The same car charged at $0.10 per kWh costs $0.033 per mile.

Your actual cost depends entirely on what your utility charges. Rates vary by state, by time of day, and by season. California averages around $0.16 per kWh; Louisiana around $0.10. Some utilities offer time-of-use rates that drop to $0.08 per kWh during off-peak hours (usually late evening or early morning), which can cut your charging cost by 40 percent if you charge during those windows. Check your utility's website or your last bill to find your rate, then multiply it by your car's efficiency rating (listed in miles per kWh on the window sticker or in your owner's manual).

Key Takeaways

  • Home charging costs $0.03 to $0.05 per mile in most of the United States, depending on your local electricity rate and your car's efficiency.
  • Public fast charging costs $0.25 to $0.45 per mile and is meant for road trips, not daily driving.
  • Installing a Level 2 home charger costs $500 to $2,500 including equipment and electrician labor, and pays for itself through fuel savings within three to five years for most drivers.
  • Time-of-use electricity rates can cut your home charging cost by 30 to 40 percent if you charge during off-peak hours.
  • Charging costs are lowest in states with cheap electricity (Louisiana, Oklahoma) and highest in states with expensive electricity (Hawaii, Massachusetts).

What a full charge costs at home

A full charge for a typical 60 kWh battery costs $6 to $12 at home, depending on your electricity rate. A Tesla Model 3 with a 75 kWh battery costs $7.50 to $15 to fully charge. A Chevrolet Bolt EV with a 66 kWh battery costs $6.60 to $13.20. These numbers assume charging from empty to full, which most owners do only once or twice a month—most days you'll charge a partially depleted battery, so your actual cost per charge is lower.

To calculate your own cost, find your electricity rate on your utility bill (measured in cents per kWh), then multiply it by your car's battery size in kWh. A car with a 60 kWh battery charged at $0.12 per kWh costs $7.20 per full charge. That same car charged at $0.18 per kWh costs $10.80. The difference between cheap and expensive electricity adds up: over a year of weekly charges, you'd spend $374 versus $562—a $188 difference for the same driving.

Public charging stations and their per-mile costs

Public Level 2 chargers (the kind at parking lots, workplaces, and shopping centers) cost $1 to $3 per hour or $0.20 to $0.35 per mile. DC fast chargers (the kind on highways) cost $0.25 to $0.45 per mile. Fast chargers are expensive because they deliver power much more quickly—a 30-minute charge that adds 200 miles costs $50 to $90. A Level 2 charger that adds the same 200 miles over four hours costs $4 to $12.

Public charging is rarely the cheapest way to add miles. It exists for road trips and for people without home charging access. If you have a driveway and a Level 2 charger at home, you'll use public chargers only occasionally. If you live in an apartment or condo without dedicated parking, public charging becomes your primary option, and the per-mile cost rises significantly. Some networks (Electrify America, EVgo, Ioniq) offer monthly subscription plans ($4 to $15 per month) that reduce per-minute rates by 10 to 25 percent if you charge frequently.

Installation costs for home charging equipment

A Level 2 home charger costs $500 to $2,500 installed. The charger itself (a 240-volt unit like a Wallbox, Tesla Wall Connector, or Clipper Creek) runs $400 to $800. An electrician to install a new 240-volt circuit in your garage or driveway costs $500 to $2,000, depending on how far the panel is from where you want the charger and whether your home's electrical service needs an upgrade. If your home already has a 240-volt outlet (for a dryer or range), installation drops to $200 to $500.

A Level 1 charger (the 120-volt plug that comes with most EVs) is free but slow—it adds 2 to 5 miles of range per hour. Level 1 works only if you drive fewer than 30 miles per day and can leave the car plugged in overnight. For any longer commute, a Level 2 charger is necessary. The payback period is typically three to five years: if you save $1,200 per year on fuel (compared to a gas car), a $1,500 charger installation pays for itself in 15 months.

How electricity rates vary by state and time of day

Residential electricity rates range from $0.09 per kWh in Louisiana to $0.31 per kWh in Hawaii. Most states fall between $0.11 and $0.16. The variation reflects the cost of power generation, transmission, and local demand. States with abundant hydroelectric power (Washington, Oregon) have lower rates. States that rely on expensive imported power or have high demand (California, Massachusetts) have higher rates.

Many utilities offer time-of-use (TOU) rates that charge less during off-peak hours. Off-peak is usually 9 p.m. to 6 a.m. on weekdays, sometimes extending through weekends. A TOU rate might be $0.08 per kWh off-peak and $0.18 per kWh during peak hours. If you charge only during off-peak, your cost drops by 55 percent. Even if you charge partly during peak hours, shifting half your charging to off-peak saves 25 to 30 percent. Ask your utility whether TOU rates are available and whether they explore to residential customers. Some utilities require you to request the rate change; others make it automatic for EV owners.

Comparing home charging to gas and other fuels

A gas car that gets 25 miles per gallon costs $0.12 to $0.15 per mile when gas is $3 to $3.75 per gallon. A hybrid that gets 50 mpg costs $0.06 to $0.075 per mile. An electric car charged at home costs $0.03 to $0.05 per mile. Over 100,000 miles, the fuel cost difference is substantial: a gas car costs $12,000 to $15,000 in fuel, a hybrid $6,000 to $7,500, and an EV $3,000 to $5,000.

This assumes you charge at home most of the time. If you rely on public fast charging for 50 percent of your miles, your EV cost rises to $0.10 to $0.15 per mile—comparable to a gas car. The financial advantage of an EV depends on having home charging access. Apartment dwellers without dedicated parking should calculate their actual public charging cost before buying, because it may not save money compared to a used hybrid or efficient gas car.

Frequently Asked Questions

Does charging overnight cost less than charging during the day?

Only if your utility offers time-of-use rates that make off-peak hours cheaper. Standard flat-rate plans charge the same price 24 hours a day. If your utility has TOU rates, off-peak (usually 9 p.m. to 6 a.m.) is typically 30 to 50 percent cheaper than peak hours. Check your utility's website or call to see if TOU is available in your area.

What's the difference between Level 1, Level 2, and DC fast charging?

Level 1 (120 volts) adds 2 to 5 miles per hour and comes free with your car. Level 2 (240 volts) adds 25 to 30 miles per hour and costs $500 to $2,500 to install at home. DC fast charging (480 volts) adds 150 to 200 miles in 30 minutes and is found at public stations. Home charging is always Level 2 or Level 1; fast charging is only at public networks.

Can I charge my EV on a regular household outlet?

Yes, using the Level 1 charger that comes with the car. It plugs into any standard 120-volt outlet. It's slow—adding only 2 to 5 miles per hour—so it works only if you drive short distances and can leave the car plugged in overnight. For any commute longer than 30 miles, you need a 240-volt Level 2 charger.

Do I have to pay to charge at work or shopping centers?

It depends on the location. Many employers and retailers offer free Level 2 charging as a perk. Some charge $1 to $3 per hour. Check the charging network's app (ChargePoint, Electrify America, EVgo) before you arrive to see the price and availability. Free charging is common enough that it's worth seeking out if you have flexibility in where you shop or work.

How much does a road trip cost in charging fees?

A 500-mile road trip in an EV costs $75 to $125 in DC fast charging fees, depending on your car's efficiency and the network's pricing. A gas car covering the same distance at 25 mpg costs $60 to $75 in fuel. Fast charging is slightly more expensive per mile than gas, but the difference is small. The real cost of an EV road trip is time—charging takes 30 to 45 minutes per 200 miles, versus 5 minutes to refuel a gas car.