Charging an electric car costs less per mile than gasoline, but the total depends on your local electricity rates, how often you charge at home versus public stations, and your car's battery size

The price you pay to charge an electric car is tied directly to your local electricity rate, measured in cents per kilowatt-hour (kWh). If your utility charges 14 cents per kWh and your car uses 25 kWh to go 100 miles, you are paying about $3.50 for that 100 miles. A gasoline car getting 25 miles per gallon at $3.50 per gallon costs the same for the same distance — but electricity rates vary widely by region and time of day, and public charging stations often charge more than home rates.

Most electric car owners charge at home overnight, where rates are lowest. Some utilities offer time-of-use rates that charge less during off-peak hours (often 9 p.m. to 6 a.m.), which can cut your charging cost by 30 to 50 percent if you shift charging to those windows. Public charging networks like Electrify America, EVgo, and ChargePoint charge by the minute, by the kilowatt-hour, or by a monthly subscription — and prices vary station to station.

Key Takeaways

  • Home charging costs between 3 and 5 cents per mile in most U.S. regions, compared to 10 to 12 cents per mile for gasoline cars.
  • Your electricity bill will increase by roughly $30 to $60 per month if you charge a typical electric car at home every day.
  • Public fast chargers cost $0.25 to $0.45 per kWh, or $10 to $20 for a 30-minute charge that adds 150 to 200 miles of range.
  • Time-of-use rates from your utility can reduce home charging costs significantly if you charge during off-peak hours.
  • The total cost to charge depends on your local electricity rate, your car's efficiency, and whether you charge mostly at home or at public stations.

What your electricity rate actually means for charging cost

Your utility bill shows your electricity rate in cents per kilowatt-hour. To find your rate, look at a recent bill and divide the total charge by the total kWh used. Most U.S. rates fall between 10 and 20 cents per kWh, though some states like Hawaii and Massachusetts run higher (25 to 35 cents), and others like Louisiana and Oklahoma run lower (8 to 12 cents).

Once you know your rate, multiply it by your car's efficiency rating, which the EPA lists in miles per kWh. A Tesla Model 3 uses about 4 miles per kWh; a Chevrolet Bolt uses about 3.5 miles per kWh. At 14 cents per kWh, the Model 3 costs about 3.5 cents per mile to charge. At 20 cents per kWh, it costs 5 cents per mile. This is the number to compare directly to your gasoline car's cost per mile.

How much your monthly electricity bill will rise

If you charge an electric car at home every day, expect your monthly electricity bill to increase by $30 to $60, depending on your rate and how far you drive. A typical driver covers about 1,000 miles per month. At 14 cents per kWh and 4 miles per kWh, that is 250 kWh per month, or about $35 added to your bill.

This assumes you charge only at home. If you use public chargers for part of your driving, your cost per mile rises because public stations charge more. Some utilities offer special rates for electric vehicle owners — lower off-peak rates or a separate meter for charging — so contact your utility to ask whether you may have access to. The savings can be substantial: a time-of-use rate that charges 8 cents per kWh at night instead of 14 cents during the day can cut your charging cost by 40 percent.

Public charging station costs and how they are priced

Public chargers fall into three categories: Level 2 (slower, 120 to 240 volts), DC fast chargers (rapid, 350+ volts), and Tesla Superchargers (Tesla vehicles only). Level 2 chargers at workplaces, parking lots, and shopping centers often charge by the hour or minute, typically $1 to $3 per hour. A full charge might take 4 to 10 hours and cost $4 to $30, depending on the network and your car's battery size.

DC fast chargers charge by the kWh or by the minute. Electrify America charges $0.43 per kWh in most regions; EVgo charges $0.26 to $0.45 per kWh depending on location and membership; ChargePoint varies by station owner. A 30-minute fast charge that adds 150 to 200 miles of range typically costs $10 to $20. Tesla Superchargers charge members $0.25 to $0.50 per kWh, though prices vary by location and time of day. Many networks offer monthly memberships ($10 to $50) that lower the per-kWh rate if you charge frequently.

Time-of-use rates and how to lower your charging cost

Many utilities offer time-of-use (TOU) rates that charge less during off-peak hours, usually late evening through early morning. The difference can be dramatic: peak rates might be 20 cents per kWh while off-peak rates are 10 cents per kWh. If you charge your car between 9 p.m. and 6 a.m., you cut your charging cost in half compared to charging during the day.

To find out whether your utility offers TOU rates for electric vehicles, call your utility's customer service or check their website. Some utilities automatically enroll EV owners; others require you to request the rate. You will need a smart charger or a charger with a timer to shift your charging to off-peak hours. Many electric cars have built-in scheduling that lets you set a departure time and the car charges only during the cheapest hours. If your utility does not offer TOU rates, ask whether they have a separate EV rate or a demand-response program that pays you to charge during low-demand periods.

Comparing home charging to public charging for long trips

For daily driving, home charging is almost always cheaper. But on a long road trip, you will use public fast chargers, which cost more per mile. A 200-mile trip using DC fast chargers at $0.35 per kWh might cost $25 to $30, compared to $7 to $10 if you could charge at home. However, the time trade-off matters: a 30-minute fast charge gets you back on the road, while home charging takes 8 to 12 hours.

Many EV owners use a mix: they charge at home for daily driving and use public chargers only for trips longer than their car's range. Apps like PlugShare, A Better Route Planner, and your car's built-in navigation show public charger locations, prices, and real-time availability. Some networks offer trip passes or memberships that bundle charging into a lower per-kWh rate if you plan to use public chargers regularly.

Installation costs for home charging equipment

Installing a Level 2 home charger typically costs $500 to $2,500, depending on your electrical panel, the distance from the panel to your parking spot, and whether you need a new circuit. A basic 240-volt charger costs $300 to $600; installation labor and electrical work add $200 to $2,000. Some utilities or local governments offer rebates or tax credits that cover part of this cost — check the Database of State Incentives for Renewables and Efficiency (DSIRE) or your utility's website.

Once installed, a Level 2 charger costs nothing to operate beyond the electricity it uses. Many owners recoup the installation cost within two to four years through lower fuel costs compared to gasoline. If you rent or cannot install a charger at home, you can use public chargers, though the higher per-mile cost means you will not see the same savings.

Frequently Asked Questions

Is charging an electric car really cheaper than gasoline?

In most U.S. regions, yes. Home charging costs 3 to 5 cents per mile, while gasoline costs 10 to 12 cents per mile at current prices. The gap widens in states with low electricity rates and narrows in states with high rates or high gas prices. Public charging costs more per mile but is still often cheaper than gasoline for long trips.

What if I charge only at public stations?

Public charging costs $0.25 to $0.45 per kWh, which works out to 6 to 11 cents per mile depending on your car's efficiency. This is more expensive than home charging but often still cheaper than gasoline. If you charge only at public stations, look for a membership or monthly plan to lower the per-kWh rate.

Do I need to install a charger at home?

No, but home charging is much cheaper and more convenient than public charging. If you cannot install a charger, you can use public Level 2 chargers (slower, cheaper) or DC fast chargers (faster, more expensive). Many apartment buildings and workplaces have public chargers available.

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

Yes, using a Level 1 charger (standard 120-volt outlet), but it is very slow — typically 2 to 5 miles of range per hour. A full charge might take 24 to 48 hours. Most owners install a Level 2 charger (240 volts) for faster overnight charging, though Level 1 works if you drive short distances and have time to charge overnight.

How do I know my car's efficiency in miles per kWh?

The EPA lists efficiency for every electric car model on fueleconomy.gov. Search your car's year and model, and you will see the rating in miles per kWh or kWh per 100 miles. Real-world efficiency varies based on driving style, weather, and terrain — highway driving uses more energy than city driving.