The real cost depends on where you charge and your local electricity rate

Charging at home costs between $0.03 and $0.05 per mile in most of the United States, based on typical residential electricity rates of $0.12 to $0.18 per kilowatt-hour. A full charge for a 60-kilowatt-hour battery (common in mid-size EVs) runs $7 to $11 at home. Public fast chargers cost roughly $0.25 to $0.45 per mile, or $15 to $30 for the same full charge, depending on the network and your location.

The gap between home and public charging matters because most EV owners do the bulk of their charging at home overnight, when electricity is often cheaper. Public charging becomes your real cost only on longer trips where you cannot reach home on a single charge. Understanding your own electricity rate and which public networks you will actually use tells you far more than national averages.

Key Takeaways

  • Home charging costs $7 to $11 per full charge in most states, but varies by your local utility rate and the time of day you charge.
  • Public DC fast chargers cost $0.25 to $0.45 per mile and are meant for road trips, not daily charging.
  • Level 2 chargers at workplaces and shopping centers are slower but often cheaper per mile than DC fast chargers.
  • Your actual cost depends more on your electricity rate and charging habits than on the vehicle itself.

Home charging costs: what your utility bill actually shows

To find your real home charging cost, look at your electricity bill for the per-kilowatt-hour rate. Most residential customers pay between $0.12 and $0.18 per kilowatt-hour, though rates in Hawaii, California, and the Northeast run higher (sometimes $0.25 or more), and rates in Louisiana and Oklahoma run lower (sometimes $0.10 or less).

Multiply your rate by the battery size. A Tesla Model 3 Standard Range has a 54-kilowatt-hour usable battery; at $0.15 per kilowatt-hour, a full charge costs $8.10. A Chevrolet Bolt EV with a 66-kilowatt-hour battery costs $9.90 at the same rate. These numbers assume 100 percent efficiency, but real-world charging loses about 10 to 15 percent to heat and converter losses, so add that to your estimate.

Time-of-use rates, where your utility charges less during off-peak hours (usually 9 p.m. to 6 a.m.), can cut your charging cost by 30 to 50 percent if you charge overnight. Ask your utility whether time-of-use rates are available for your account; many offer them free or for a small monthly fee. If you charge during peak hours, your cost per mile climbs noticeably.

Public DC fast charging: the real cost on road trips

DC fast chargers are the pumps you use on the highway when you need to add 200 miles of range in 20 to 40 minutes. They cost more per mile than home charging because the infrastructure is expensive and the electricity itself is pricier during peak hours. Expect $0.25 to $0.45 per mile depending on the network and location.

Tesla Superchargers, the largest network, charge $0.26 to $0.35 per kilowatt-hour in most states as of 2024, though prices vary by location and time of day. Electrify America, EVgo, and Chargepoint typically charge $0.30 to $0.43 per kilowatt-hour. A 200-mile charge on a road trip costs $30 to $50 at these rates. Some networks charge by the minute instead of the kilowatt-hour, which can cost more if you charge slowly or if the charger is busy and your car charges at reduced speed.

Many EV owners subscribe to monthly plans with these networks to lower the per-kilowatt-hour rate. Tesla includes free Supercharging with some vehicle purchases, though this benefit is less common now. Electrify America and Chargepoint offer monthly memberships that reduce per-kilowatt-hour rates by 10 to 20 percent if you charge frequently.

Level 2 public chargers: the middle ground for longer stops

Level 2 chargers, found at workplaces, shopping centers, and parking garages, add 25 to 30 miles of range per hour. They cost less per mile than DC fast chargers because they use standard 240-volt power, not specialized high-voltage equipment. Expect $0.15 to $0.30 per kilowatt-hour, or roughly $0.10 to $0.20 per mile.

Many Level 2 chargers are free or included with parking, especially at workplaces and some retailers. When they do charge, they often use a monthly membership model ($10 to $20 per month) rather than per-use fees. If your workplace or regular shopping destination has free Level 2 charging, your road-trip costs drop significantly because you can top up during a lunch break or shopping trip without paying extra.

How battery size and efficiency affect your per-mile cost

A larger battery costs more to fill but stores more energy, so the per-mile cost depends on the vehicle's efficiency, not just the battery size. A Tesla Model 3 Standard Range (54 kWh, 26 kWh per 100 miles) costs about $3.90 per 100 miles at $0.15 per kilowatt-hour. A Hummer EV (200+ kWh, 40+ kWh per 100 miles) costs about $6 per 100 miles at the same rate, even though the battery is much larger.

Check your vehicle's EPA rating for kilowatt-hours per 100 miles (or miles per kilowatt-hour) to calculate your own cost. Multiply the kilowatt-hours per 100 miles by your local electricity rate to find your cost per 100 miles. This number is more useful than the total cost to charge because it tells you what you actually pay for the miles you drive.

Comparing charging costs to gasoline

At $0.15 per kilowatt-hour and 26 kWh per 100 miles, an EV costs about $3.90 per 100 miles to charge at home. A gasoline car averaging 30 miles per gallon costs about $13 per 100 miles at $4 per gallon. The EV is roughly one-third the cost per mile for daily driving.

On road trips using DC fast chargers at $0.35 per kilowatt-hour, the same EV costs about $9.10 per 100 miles, still cheaper than gasoline but the gap narrows. If you use a monthly membership to reduce the per-kilowatt-hour rate to $0.28, the cost drops to $7.28 per 100 miles. These comparisons assume current electricity and fuel prices; both change over time and by location.

Factors that change your actual charging cost

Your state and utility matter more than anything else. California residents pay roughly double what Louisiana residents pay per kilowatt-hour. If you move or change utilities, your charging cost changes when ready. Check your current bill or your utility's website for your exact rate.

The time you charge also matters. Charging at 2 a.m. on a time-of-use plan costs half what charging at 5 p.m. costs. If you have a flexible schedule or a programmable charger, shifting your charging to off-peak hours saves hundreds of dollars per year. Some utilities offer special EV rates that are cheaper than standard residential rates; ask whether your utility has one.

The charger's age and condition affect real-world efficiency. Older or poorly maintained chargers may waste 15 to 20 percent of the electricity as heat. New home chargers and well-maintained public chargers waste closer to 10 percent. This difference is small enough that it should not drive your choice of charger, but it explains why your actual cost sometimes exceeds the straightforward calculation.

Frequently Asked Questions

Is it cheaper to charge at home or at a public charger?

Home charging is almost always cheaper per mile because residential electricity rates are lower than the markup public networks add. Home charging costs $0.03 to $0.05 per mile; public DC fast charging costs $0.25 to $0.45 per mile. Use public chargers only when you cannot reach home on your current charge.

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

No, but most networks offer optional monthly plans that lower your per-kilowatt-hour rate if you charge frequently. If you charge only on occasional road trips, pay-per-use is usually cheaper. If you charge multiple times per week, a monthly plan ($10 to $20) typically saves money.

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

DC fast chargers add 200+ miles in 20 to 40 minutes and cost $0.25 to $0.45 per mile. Level 2 chargers add 25 to 30 miles per hour and cost $0.10 to $0.20 per mile. Level 2 is cheaper but slower, so it works for workplace or shopping-center charging but not for highway road trips.

How much does it cost to charge an EV compared to filling a gas tank?

A full charge costs $7 to $11 at home and adds 200 to 300 miles of range. A gallon of gasoline costs $3 to $4 and adds 25 to 35 miles in a typical car. Over 100 miles, an EV costs $3 to $5 at home; a gas car costs $10 to $15. The EV is roughly one-third the cost per mile for daily driving.

Can I reduce my charging cost by changing when I charge?

Yes, if your utility offers time-of-use rates. Charging during off-peak hours (usually 9 p.m. to 6 a.m.) can cut your cost by 30 to 50 percent. Ask your utility whether time-of-use rates are available; many offer them free or for a small monthly fee. A programmable home charger lets you set charging to start automatically during cheap hours.