What you'll pay to charge an electric car depends on your local electricity rate, how often you drive, and where you charge

The cost to charge an electric car is typically one-third to one-half the cost of gasoline for the same distance. If you charge at home on a standard residential rate, you might pay $0.03 to $0.05 per mile. A gas car at $3.50 per gallon and 25 miles per gallon costs roughly $0.14 per mile. The actual number depends on three things: your local electricity price, your car's efficiency, and whether you charge at home, at work, or at a public station.

Most electric car owners charge at home overnight, which is cheaper than public charging. Public chargers — especially fast chargers at highway rest stops — cost more per kilowatt-hour and add convenience fees. Some employers offer free or discounted charging at work. The math changes if you have time-of-use rates, which charge less during off-peak hours, or if you live somewhere with very cheap or very expensive electricity.

Key Takeaways

  • Home charging costs $0.03 to $0.05 per mile in most of the United States, but varies by state and your utility's rate structure.
  • Public fast chargers cost roughly two to three times more per mile than home charging and add per-session or per-minute fees on top of the energy cost.
  • Time-of-use rates, available from many utilities, can cut your home charging cost by 30 to 50 percent if you charge during off-peak hours.
  • A typical electric car uses 0.25 to 0.35 kilowatt-hours per mile, so multiply that by your local electricity rate to find your actual cost.

How to calculate your home charging cost

Start with your electricity rate. Check your utility bill for the per-kilowatt-hour price — it is usually listed as "energy charge" or "per kWh rate" and typically ranges from $0.10 to $0.20 per kilowatt-hour across the United States. Some states like Louisiana and Oklahoma are cheaper; Hawaii and Massachusetts are more expensive. Your rate may also vary by season.

Next, find your car's efficiency rating. The EPA lists this on the window sticker as "MPGe" (miles per gallon equivalent) or in the owner's manual as kilowatt-hours per 100 miles. A Tesla Model 3 uses roughly 24 kWh per 100 miles; a Chevrolet Bolt uses about 26 kWh per 100 miles. Divide 100 by that number to get miles per kilowatt-hour, then multiply by your electricity rate. If your car uses 26 kWh per 100 miles and your rate is $0.14 per kWh, your cost is (100 ÷ 26) × $0.14 = $0.54 per 10 miles, or about $0.054 per mile.

This calculation assumes you charge at home with standard rates. If you have time-of-use pricing, use the off-peak rate instead — you will see a much lower number. If you charge during peak hours, use the higher rate.

Time-of-use rates and how they lower your bill

Many utilities offer time-of-use (TOU) rates, which charge less per kilowatt-hour during off-peak hours — typically 9 p.m. to 6 a.m. — and more during peak hours. If your off-peak rate is $0.08 per kWh and your peak rate is $0.18 per kWh, charging overnight instead of during the day cuts your cost by more than half.

You do not need to enroll in a special program; you straightforward ask your utility whether TOU rates are available in your area. Some utilities offer them automatically to electric car owners. Others require you to request the rate change. The savings are real only if you can charge during off-peak hours — if you charge during the day at work or at a public station, TOU rates do not help.

Calculate whether TOU makes sense for you: multiply your daily charging need (in kWh) by the difference between peak and off-peak rates, then by 365 days. If you charge 30 kWh per day and the difference is $0.10 per kWh, TOU saves you roughly $1,095 per year. Check whether your utility charges a monthly fee for TOU; if it does, subtract that from the savings.

Public charging costs and per-minute fees

Public chargers cost more than home charging because utilities charge the charging network operator a higher commercial rate, and the operator adds a markup. A Level 2 charger at a parking lot or shopping center typically costs $0.20 to $0.35 per kilowatt-hour, plus a session fee of $1 to $3. A DC fast charger at a highway rest stop costs $0.30 to $0.50 per kilowatt-hour, plus a session fee or per-minute fee.

Some networks charge by the minute instead of by the kilowatt-hour. Electrify America, for example, charges $0.43 per minute at some fast chargers, which works out to roughly $0.15 to $0.25 per kilowatt-hour depending on how fast your car charges. Others, like Tesla Superchargers, charge by the kilowatt-hour. Prices vary by location and change frequently, so check the app before you plug in.

For a 200-mile road trip, you might add 100 kWh at a fast charger. At $0.40 per kWh plus a $3 session fee, that is $43. The same energy at home would cost roughly $14. Public charging is worth the premium only when you need the speed — for daily driving, home charging is far cheaper.

Workplace charging and free or discounted options

Many employers offer free or low-cost charging at work. If your workplace has Level 2 chargers and you charge for four to eight hours during the workday, you can cover 20 to 40 miles of driving without using home electricity. Some employers charge a small monthly fee ($5 to $20) to offset the electricity cost; others offer it free as an employee benefit.

If your workplace offers charging, ask whether it is free or metered, and whether you need to reserve a spot. Some workplaces use apps to manage charger access and track usage. Even if the charging is not free, it is usually cheaper than public fast charging and faster than home charging, making it a good middle ground for commuters.

If you do not have workplace charging, some apartment buildings, shopping centers, and parking garages offer Level 2 chargers. Many are free during business hours or charge a flat monthly fee. Check PlugShare or your car's navigation system to find chargers near your work or home.

Comparing total annual charging costs by state

Your total annual cost depends on how much you drive and what your electricity costs. A driver who travels 12,000 miles per year in a car that uses 0.28 kWh per mile needs 3,360 kWh per year. At $0.12 per kWh (the U.S. average), that is roughly $403 per year. In Hawaii, where rates are around $0.30 per kWh, the same driver would pay roughly $1,008 per year. In Louisiana, where rates are around $0.09 per kWh, the cost would be roughly $302 per year.

If you charge mostly at home during off-peak hours on a TOU rate, you might pay 30 to 50 percent less. If you charge mostly at public fast chargers, you might pay two to three times more. Most owners fall somewhere in the middle — charging at home most of the time and using public chargers for longer trips.

To estimate your own cost, find your state's average electricity rate (your utility bill shows your actual rate), multiply by your car's efficiency in kWh per mile, and multiply by your annual mileage. Add any monthly charging fees or subscriptions. Subtract any employer or public charging you use for free.

Installation costs for home charging equipment

Before you can charge at home, you need a charger. A basic Level 1 charger comes with most electric cars and plugs into a standard 120-volt outlet — it adds about 3 miles of range per hour and is slow for daily use. A Level 2 charger requires a 240-volt circuit (like a clothes dryer outlet) and adds 25 to 30 miles of range per hour.

A Level 2 charger costs $400 to $1,200 for the equipment itself. Installation costs $500 to $2,500 depending on whether your home already has a 240-volt circuit nearby and how far the electrician must run new wiring. If you have an existing dryer outlet, installation is cheaper. If you need a new circuit from the breaker panel, it costs more.

Some utilities and state programs offer rebates or tax credits for home charger installation. Check your utility's website or the Database of State Incentives for Renewables and Efficiency (DSIRE) to see what is available in your area. The federal tax credit for charger installation was $500 in recent years, though rules change by year and state.

Frequently Asked Questions

Is charging an electric car cheaper than buying gas?

Yes, for most drivers. Home charging typically costs one-third to one-half as much per mile as gasoline. If you drive 12,000 miles per year, home charging might cost $400 to $500 annually, while a gas car at current prices would cost $1,200 to $1,600. The savings are smaller if you use public fast chargers frequently.

Can I charge my electric car with solar panels?

Yes, if you have a home solar system with enough capacity. Solar panels generate electricity during the day, so you would charge during daylight hours or store the energy in a battery for nighttime charging. This reduces your grid electricity cost to near zero, but requires a significant upfront investment in solar equipment.

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

Level 1 uses a standard 120-volt outlet and adds 3 miles of range per hour. Level 2 uses a 240-volt circuit and adds 25 to 30 miles per hour. DC fast charging uses high-voltage equipment and adds 150 to 200 miles in 20 to 30 minutes. Home charging is almost always Level 1 or Level 2; fast chargers are for road trips and public locations.

Do I have to pay a monthly subscription to use public chargers?

Not always. Some networks like Electrify America and EVgo charge per session or per minute without a subscription. Others like ChargePoint offer monthly memberships that reduce per-use fees. Tesla Superchargers charge by the kilowatt-hour. Check the app for each network to see pricing before you sign up.

Will my electric bill go up a lot if I charge at home?

It will go up, but usually less than you might expect. If you charge 30 kWh per day and your rate is $0.12 per kWh, your bill increases by roughly $108 per month. This is still cheaper than the gas you would have bought. If you have time-of-use rates and charge during off-peak hours, the increase is smaller.