What you actually pay to charge an electric car

Charging an electric car costs less per mile than gasoline, but the exact amount depends on your local electricity rate, how efficiently your car uses power, and whether you charge at home or at a public station. Most people who own electric cars charge overnight at home on their regular household electricity plan, which is usually the cheapest option. Public charging stations — especially fast chargers at highway rest stops — cost more per kilowatt-hour, similar to paying a premium for convenience.

To understand your own cost, you need two numbers: your electricity rate (in cents per kilowatt-hour) and your car's efficiency (how many miles it travels per kilowatt-hour). Multiply those together and you get the cost per mile. For comparison, a gasoline car at $3.50 per gallon that gets 25 miles per gallon costs about 14 cents per mile in fuel alone.

Key Takeaways

  • Home charging on a standard electricity plan typically costs 3 to 5 cents per mile, roughly one-third the cost of gasoline fuel.
  • Your electricity bill shows your rate per kilowatt-hour; divide that by your car's efficiency rating to find your cost per mile.
  • Public fast chargers cost more per kilowatt-hour than home charging, sometimes 25 to 40 cents per kilowatt-hour depending on the network and location.
  • Time-of-use electricity plans can lower your charging cost if you charge during off-peak hours, usually late evening or early morning.
  • Installing a home charger requires an electrician and costs $500 to $2,500 depending on your electrical panel and distance to your car.

Home charging on your regular electricity rate

Most electric car owners charge at home overnight using the same electricity that powers their house. Your electricity bill lists your rate per kilowatt-hour — look for a line that says "rate" or "per kWh" and you will see a number like 12 cents or 15 cents. That is what you pay for every kilowatt-hour you use to charge your car.

Your car's efficiency is listed in the owner's manual or on the window sticker as miles per kilowatt-hour (or sometimes as kilowatt-hours per 100 miles). A typical electric car uses about 3 to 4 miles per kilowatt-hour. If your electricity costs 13 cents per kilowatt-hour and your car gets 3.5 miles per kilowatt-hour, your cost per mile is roughly 3.7 cents. Charging a 200-mile battery from empty to full would cost about $7 to $8.

The math changes if you have a time-of-use plan, which many utilities offer. These plans charge less per kilowatt-hour during off-peak hours (usually 9 p.m. to 6 a.m.) and more during peak hours. If you can charge during the cheaper window, your per-mile cost drops further — sometimes to 2 to 3 cents per mile.

Public charging stations and their different costs

Public charging comes in three speeds, and the faster the charger, the more you pay per kilowatt-hour. Level 2 chargers (found at parking lots, workplaces, and some shopping centers) charge slowly and cost roughly the same as home charging, sometimes slightly more. DC fast chargers (the kind at highway rest stops and dedicated charging networks) charge in 20 to 40 minutes and cost significantly more — typically 25 to 40 cents per kilowatt-hour depending on the network and location.

Networks like Electrify America, EVgo, and Tesla Supercharger set their own prices, which vary by region and time of day. Some charge by the minute rather than by the kilowatt-hour, which can make the cost harder to predict. A 20-minute fast charge might cost $15 to $25 depending on the network and your location. Most people use fast chargers only for long trips, not daily driving.

Some employers and shopping centers offer free Level 2 charging as a perk, which can reduce your overall charging cost if you charge there regularly. Check whether your workplace or frequent destinations have chargers before you assume all public charging will cost money.

Installing a home charger and what it costs

A home charger (called a Level 2 charger) plugs into a 240-volt outlet, the same type that powers a clothes dryer or electric oven. Installation requires an electrician to run a new circuit from your electrical panel to your garage or driveway. The charger itself costs $300 to $800, and the electrician's work typically runs $200 to $1,700 depending on how far your panel is from where you want the charger and whether your panel has room for a new circuit.

Some states and utilities offer rebates for home charger installation, which can cover $500 to $2,000 of the cost. Check your utility's website or contact them directly to ask whether a rebate is available in your area. The rebate usually requires you to use a licensed electrician and may have other conditions, so read the terms before you hire anyone.

A home charger charges much more slowly than a fast charger — typically adding 25 to 30 miles of range per hour — but because you charge overnight, the speed does not matter for daily driving. Most people charge their car the same way they charge their phone: plug it in when they get home and unplug it in the morning.

How charging costs compare to gasoline over time

The fuel cost advantage of an electric car compounds over years of driving. If you drive 12,000 miles per year and your home charging costs 4 cents per mile, you spend about $480 per year on electricity to charge. A gasoline car getting 25 miles per gallon at $3.50 per gallon costs about $1,680 per year in fuel. Over five years, that is a difference of $6,000 in fuel costs alone.

This comparison assumes you charge mostly at home. If you rely on public fast chargers for most of your driving, the cost advantage shrinks but usually remains — fast chargers still cost less per mile than gasoline in most regions. Your actual savings depend on your local electricity rates, gasoline prices in your area, and how much you drive.

Factors that change your charging cost

Your electricity rate varies by utility, state, and time of year. Rates are highest in Hawaii and California and lowest in Louisiana and Washington, with differences of 10 cents per kilowatt-hour or more between regions. If you are considering an electric car, check your current electricity bill to see what you actually pay — that number is more useful than any national average.

Your car's efficiency also varies by model and driving conditions. Larger vehicles and trucks use more energy per mile than compact cars. Cold weather reduces efficiency by 20 to 40 percent because the battery works harder and you use energy for cabin heating. Highway driving at high speeds uses more energy than city driving at lower speeds. All of these factors change your cost per mile, so the number you calculate for your own situation is more accurate than a general estimate.

Frequently Asked Questions

Is charging an electric car really cheaper than gasoline?

Yes, in nearly all regions. Home charging typically costs 3 to 5 cents per mile compared to 12 to 15 cents per mile for gasoline. Even public fast chargers usually cost less per mile than gasoline, though the advantage is smaller. Your actual savings depend on your local electricity rate and gasoline price.

What if I do not have a garage or driveway to install a home charger?

You can still own an electric car, but your charging cost will be higher because you will rely on public chargers. Some apartment buildings and condos are installing shared chargers in parking lots. Contact your building management to ask whether they plan to add chargers, or check whether nearby public chargers are available for regular use.

Do I pay differently if I charge during the day versus at night?

Only if your utility offers a time-of-use plan, which charges less during off-peak hours (usually late evening and early morning) and more during peak hours. Ask your utility whether this plan is available and whether the savings would cover the cost of charging at night instead of during the day.

How do I know my car's efficiency in miles per kilowatt-hour?

Check your owner's manual, the window sticker from when the car was new, or the EPA's website. You can also calculate it yourself by dividing the miles you drove by the kilowatt-hours shown on your charging receipt. Most electric cars range from 2.5 to 4.5 miles per kilowatt-hour depending on the model and driving conditions.

Can I charge my electric car with a regular household outlet?

Yes, but it is very slow. A standard 120-volt outlet (the kind your phone charger uses) adds about 2 to 3 miles of range per hour, so charging a 200-mile battery takes 60 to 100 hours. Most people use this method only as a backup or for topping up when a faster charger is not available.