The real cost of charging depends on your electricity rate, the charger you use, and where you charge

Charging an electric car costs less per mile than filling a gas tank, but the total price you pay depends on three things: your local electricity rate, the type of charger, and whether you charge at home or at a public station. Home charging is almost always cheaper than public charging, and Level 2 chargers (the standard home setup) cost less to run than DC fast chargers. Your actual bill shows up on your electricity statement if you charge at home, or as a separate transaction if you use a public network.

The math is straightforward once you know these numbers. If your electricity costs 15 cents per kilowatt-hour and your car uses 25 kilowatt-hours to go 100 miles, one full charge costs about $3.75. A gas car getting 25 miles per gallon at $3.50 per gallon costs $14 for the same distance. But electricity rates vary by region and time of day, and public chargers often add a markup, so your actual cost depends on your specific situation.

Key Takeaways

  • Home charging with a Level 2 charger typically costs between $2 and $6 per full charge, depending on your local electricity rate and your car's battery size.
  • Public DC fast chargers cost more per kilowatt-hour than home charging and often charge by the minute as well as by the amount of electricity used.
  • Charging during off-peak hours (usually late evening or early morning) can cut your home charging cost by 30 to 50 percent if your utility offers time-of-use rates.
  • The upfront cost of installing a Level 2 home charger ranges from $500 to $2,500 depending on your electrical panel and whether you need new wiring.

Home charging costs and what affects the price

Charging at home is the cheapest option for most people because you pay only your household electricity rate with no markup. A Level 2 charger (the standard 240-volt home charger) draws power slowly and costs less to operate than a DC fast charger. The total cost per charge depends on two numbers: your electricity rate in cents per kilowatt-hour, and your car's battery size in kilowatt-hours.

To estimate your cost, find your electricity rate on your utility bill and multiply it by your car's battery capacity. A Tesla Model 3 with a 60-kilowatt-hour battery charged at 15 cents per kilowatt-hour costs $9 for a full charge. A Chevy Bolt with an 85-kilowatt-hour battery at the same rate costs $12.75. Rates vary widely by region — California and Hawaii average 20 to 30 cents per kilowatt-hour, while Louisiana and Oklahoma average 10 to 12 cents. Your rate also changes by season and time of day.

Many utilities offer time-of-use rates, which charge less during off-peak hours (usually 9 p.m. to 6 a.m.) and more during peak hours. If you charge only at night on a time-of-use plan, you might pay 8 cents per kilowatt-hour instead of 18 cents, cutting your charging cost nearly in half. Ask your utility whether this option is available and whether it makes sense for your household's overall electricity use.

Public charging networks and their pricing structures

Public chargers cost more than home charging because the network operator pays for the equipment, land, and electricity, then adds a profit margin. Pricing varies by network and location, but most public chargers charge in one of three ways: by the kilowatt-hour (like your home bill), by the minute, or by a monthly subscription plus per-use fees.

DC fast chargers, which add 200 miles of range in 20 to 30 minutes, typically cost $0.25 to $0.50 per kilowatt-hour at networks like Electrify America, EVgo, and Tesla Supercharger. A 30-minute fast charge that adds 200 miles might cost $15 to $25. Level 2 public chargers, which take 4 to 10 hours for a full charge, usually cost $0.15 to $0.30 per kilowatt-hour or a flat fee of $2 to $5 per session. Some networks charge by the minute instead — typically $0.10 to $0.25 per minute — which can add up quickly if you charge slowly.

Many networks offer monthly memberships that lower the per-use cost if you charge frequently. Electrify America's membership costs $4 per month and reduces DC fast charging rates by about 25 percent. Tesla Supercharger membership costs $12 per month and gives a similar discount. If you charge at public stations more than once or twice a week, a membership usually pays for itself.

Installing a home charger and what it costs upfront

A Level 2 home charger requires a 240-volt outlet, which most homes have for a dryer or electric range. If you already have an available outlet near where you park, installation costs $200 to $500 for the charger itself plus labor. If you need a new circuit or wiring run from your electrical panel to your garage, costs rise to $1,500 to $2,500 depending on distance and whether your panel needs an upgrade.

An electrician can tell you the exact cost after inspecting your home. Some utilities and state programs offer rebates or tax credits that cover part of the installation cost — these vary by location and change year to year. Check with your local utility and your state's energy office to see what is available where you live. The federal tax credit for home charger installation was up to $500 in recent years, though this changes with tax law.

A Level 1 charger (standard 120-volt outlet) costs $300 to $600 and requires no installation, but it adds only 2 to 3 miles of range per hour, making it practical only if you charge overnight every night. Most people who charge at home choose Level 2 because it adds 25 to 30 miles per hour and pays for itself within a few years through lower fuel costs.

How charging speed affects what you pay per mile

Faster chargers cost more to use because they draw more power from the grid at once. A DC fast charger pulls 50 to 350 kilowatts, while a Level 2 charger pulls 7 to 19 kilowatts. The grid operator charges the charger network higher rates for this power, and those costs get passed to you. This is why a DC fast charger costs roughly twice as much per kilowatt-hour as a Level 2 charger, even though both deliver the same electricity.

For daily driving, Level 2 charging at home is almost always the cheapest option because you charge slowly overnight when electricity is cheaper and you have time to wait. DC fast charging makes sense only when you need range quickly — on a road trip, for example, or when you forgot to charge and need to leave soon. A 200-mile road trip might cost $40 to $60 in fast-charging fees, while the same distance charged at home over several nights would cost $6 to $12.

Comparing total ownership costs: electric cars versus gas cars

Over a year of typical driving (12,000 to 15,000 miles), an electric car costs roughly one-third to one-half as much to fuel as a gas car, even when you account for public charging. A car that uses 25 kilowatt-hours per 100 miles charged entirely at home at 15 cents per kilowatt-hour costs about $450 to $675 per year in electricity. A gas car getting 25 miles per gallon at $3.50 per gallon costs $1,680 to $2,100 per year in fuel.

If you charge partly at public stations, your fuel cost rises but usually stays below gas. A mix of 80 percent home charging and 20 percent public charging might cost $700 to $900 per year. Electricity rates and gas prices vary by region and time, so your actual savings depend on where you live and your driving patterns. Over the life of a car (10 years or 150,000 miles), the fuel savings from an electric car can total $10,000 to $15,000 compared to a gas car.

Frequently Asked Questions

Does charging at night cost less than charging during the day?

Only if your utility offers time-of-use rates, which charge less during off-peak hours (usually 9 p.m. to 6 a.m.). Standard flat-rate plans charge the same price any time of day. Contact your utility to ask whether time-of-use rates are available and whether switching would lower your total bill, since it affects all your electricity use, not just car charging.

Can I charge my electric car with solar panels?

Yes, if you have a home solar system, you can charge your car during the day when panels produce power. This eliminates electricity costs for those miles, though you still pay for any charging that happens after sunset. The upfront cost of solar panels is separate from charger installation and varies widely based on your roof and location.

What's the difference between a kilowatt and a kilowatt-hour?

A kilowatt is power (how fast electricity flows), and a kilowatt-hour is energy (how much electricity you use over time). A 7-kilowatt Level 2 charger running for one hour delivers 7 kilowatt-hours of energy. Your electricity bill charges you for kilowatt-hours, not kilowatts, so that's the number you use to calculate charging cost.

Is it cheaper to charge at work than at home?

Usually yes, because many employers offer free or low-cost charging as an employee benefit. If your workplace charges are free, you save the full cost of home charging for those miles. If they charge a fee, compare it to your home electricity rate — workplace charging is often cheaper because employers negotiate bulk rates with charging networks.

Do I pay more to charge a bigger battery?

Yes. A larger battery holds more kilowatt-hours, so a full charge costs more. A car with a 40-kilowatt-hour battery costs less to charge than a car with an 80-kilowatt-hour battery at the same electricity rate. However, larger batteries also go farther per charge, so the cost per mile might be similar or even lower depending on the car's efficiency.