Charging an EV 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 vehicle's efficiency

The most common scenario is charging at home overnight. If your local electricity costs 15 cents per kilowatt-hour (kWh) — a middle-range U.S. rate — charging a typical EV with a 60-kilowatt-hour battery costs about $9. That same vehicle might travel 200 miles on that charge, which works out to roughly 4.5 cents per mile. A gas car getting 25 miles per gallon at $3.50 per gallon costs about 14 cents per mile.

The catch is that electricity rates vary widely by region and time of day. California residents pay closer to 20 cents per kWh in many areas, while some rural areas charge 10 cents or less. Some utilities offer lower rates during off-peak hours — typically late evening or early morning — which can cut your charging cost by 30 to 50 percent if you charge during those windows.

Public charging stations introduce different costs. Level 2 chargers (the kind at shopping centers and workplaces) usually cost $1 to $3 per hour, or sometimes a flat fee of $2 to $5 per session. DC fast chargers at highway rest stops typically charge $10 to $30 per 20 to 30 minutes of charging, depending on the network and location. Some employers and apartment buildings offer free charging, which changes the math entirely.

Key Takeaways

  • Home charging typically costs $0.04 to $0.06 per mile, compared to $0.10 to $0.15 per mile for gasoline vehicles.
  • Your actual cost depends on your local electricity rate, which can range from 10 cents to 25 cents per kilowatt-hour depending on where you live.
  • Public Level 2 chargers cost $1 to $3 per hour, while DC fast chargers cost $10 to $30 per session.
  • Charging during off-peak hours (usually late evening or early morning) can reduce your electricity cost by 30 to 50 percent if your utility offers time-of-use rates.

How to calculate your home charging cost

Start with your vehicle's efficiency rating, which is listed on the window sticker or in your owner's manual as miles per kilowatt-hour (mi/kWh) or kilowatt-hours per 100 miles (kWh/100mi). A typical EV gets between 3 and 4 miles per kilowatt-hour. If your car gets 3.5 mi/kWh and your electricity costs 16 cents per kWh, you pay about 4.6 cents per mile.

To find your local electricity rate, check your most recent utility bill — it will show the per-kWh charge, though you may see multiple rates if you're on a time-of-use plan. Call your utility if the bill is unclear. Once you have that number, divide it by your vehicle's efficiency. That gives you the cost per mile.

If you charge a 60-kWh battery from empty to full at 16 cents per kWh, the math is straightforward: 60 × $0.16 = $9.60. Most people don't charge from completely empty, though, so a more realistic scenario is topping up from 20 percent to 80 percent charge, which uses about 36 kWh and costs roughly $5.76.

The difference between home and public charging costs

Home charging is almost always cheaper than public charging because you're buying electricity at your residential rate, which is typically lower than what charging networks charge to cover their equipment and maintenance. A Level 2 charger at a public station might cost $2 per hour, and if your car charges at 7 kW per hour, that's about 29 cents per kWh — nearly double your home rate.

DC fast chargers are even more expensive per kWh, though they're faster. A 20-minute session that adds 150 miles of range might cost $20 to $25, which sounds high until you realize you're paying for speed and convenience, not efficiency. These chargers are most useful for road trips, not daily driving.

Some networks offer subscription plans that lower per-session costs if you charge frequently at public stations. Electrify America, EVgo, and Tesla's Supercharger network all have membership options, though the savings depend on how often you use them. For someone who charges at home most days and uses public chargers only occasionally, a subscription rarely makes financial sense.

What affects your charging speed and cost

The speed at which your car charges depends on three things: the charger's power output (measured in kilowatts), your car's onboard charger capacity, and the battery's state of charge. A Level 1 charger (standard 120-volt outlet) delivers about 1.4 kW and adds roughly 3 miles of range per hour — it's slow but costs nothing if you're charging at home. A Level 2 charger (240 volts) delivers 7 to 19 kW and adds 25 to 30 miles per hour. A DC fast charger delivers 50 to 350 kW and can add 150 to 200 miles in 20 to 30 minutes.

Faster charging doesn't cost more per kilowatt-hour at home, but it does require installing a 240-volt charger, which costs $500 to $2,500 depending on your electrical panel and how far the charger is from it. Many states and utilities offer rebates that cover 50 to 100 percent of installation costs, so check with your local utility before paying out of pocket.

Battery temperature also affects charging speed and efficiency. Cold batteries charge more slowly and less efficiently, which means you might pay slightly more per mile in winter. Preheating your battery before charging (if your car has that feature) can help, but the effect is usually small.

Time-of-use rates and how to use them

Many utilities offer time-of-use (TOU) rates, which charge different prices depending on when you use electricity. Off-peak hours — usually 9 p.m. to 6 a.m. — might cost 10 cents per kWh, while peak hours (typically 4 p.m. to 9 p.m.) cost 25 cents or more. If you can shift your charging to off-peak hours, you cut your cost nearly in half.

To take advantage of TOU rates, you need to know your utility's schedule and set your car to charge during cheap hours. Most EVs let you schedule charging through their infotainment system or a smartphone app. Some utilities also offer special EV rates that are even cheaper than standard TOU rates — ask your utility whether they have an EV-specific plan.

Not all utilities offer TOU rates, and some charge a higher base fee if you switch to one. Do the math before signing up: if you charge 500 kWh per month and can shift half of it to off-peak hours, you might save $20 to $30 monthly. That's worth it. If you can only shift 20 percent, the savings might not cover the higher base fee.

Charging costs on road trips

Road trips change the cost picture because you'll rely on public DC fast chargers, which are more expensive than home charging. A 300-mile trip might involve two or three 20-minute charging sessions at $20 to $30 each, totaling $50 to $90 in charging costs. The same trip in a gas car getting 25 miles per gallon would cost about $42 in fuel at current prices, so the EV isn't always cheaper on long drives.

However, many DC fast charger networks offer introductory rates or loyalty programs that lower per-session costs. Tesla Supercharger rates vary by location but are often competitive with gas prices when you account for the EV's efficiency advantage. Some networks charge by the minute rather than per kWh, which can be cheaper if you're charging to 80 percent and the charger slows down after that point.

Planning your route to use cheaper networks and charging during off-peak hours (if possible) can reduce road trip costs. Apps like PlugShare and A Better Route Planner show charger locations, prices, and real-time availability, which helps you avoid expensive or slow chargers.

Comparing total ownership costs

Fuel or charging is only one part of vehicle ownership costs. EVs typically have lower maintenance costs than gas cars because they have no oil changes, fewer moving parts, and regenerative braking reduces brake wear. Insurance costs are similar or slightly higher, depending on the model and your location. Registration fees vary by state but are sometimes lower for EVs.

The upfront purchase price of an EV is usually higher than a comparable gas car, though federal tax credits (up to $7,500 in the U.S., though may be able to access varies by vehicle and income) and state rebates can narrow that gap. Over five to seven years, the lower fuel and maintenance costs often make up for the higher purchase price, but the exact break-even point depends on how much you drive, your local electricity rates, and gas prices in your area.

Frequently Asked Questions

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

Home charging is almost always cheaper because residential electricity rates are lower than what public charging networks charge. A public Level 2 charger might cost 25 to 30 cents per kWh, while home charging at 16 cents per kWh costs roughly half as much. DC fast chargers are even more expensive per kWh, though they're faster.

How much does it cost to install a home charger?

A Level 2 home charger costs $500 to $2,500 installed, depending on your electrical panel and how far the charger is from it. Many states and utilities offer rebates covering 50 to 100 percent of installation costs. Check with your local utility or state energy office for current programs before paying out of pocket.

Can I charge my EV with a regular outlet?

Yes, using a standard 120-volt outlet (Level 1 charging) is free if you're at home, but it's slow — about 3 miles of range per hour. It works for overnight charging if you drive less than 30 miles daily, but most EV owners install a 240-volt charger for faster, more convenient charging.

Do I have to pay to use a Supercharger or fast charger?

Yes, DC fast chargers at highway rest stops and public stations charge $10 to $30 per session or by the minute. Some networks offer subscription plans that lower per-session costs if you use them frequently. Home charging is much cheaper for daily driving; fast chargers are mainly useful for road trips.

What's the cheapest way to charge an electric vehicle?

Charging at home during off-peak hours on a time-of-use rate plan is the cheapest option, often costing 3 to 4 cents per mile. Ask your utility whether they offer TOU rates or special EV plans, and set your car to charge between 9 p.m. and 6 a.m. when rates are lowest.