Most public charging is free, but some networks charge by the minute or kilowatt-hour

Whether you pay for electric car charging depends on where you charge. Home charging costs money through your electricity bill but is usually the cheapest option. Public charging networks vary widely: some are completely free, some charge a flat fee per session, and others charge based on how much energy you use or how long you stay plugged in.

Workplace charging is often free if your employer offers it. Charging at retail locations like grocery stores or shopping centers is frequently free as an incentive to shop there. Highway fast-charging networks almost always charge, typically between $0.25 and $0.50 per kilowatt-hour, though prices vary by network and location.

Key Takeaways

  • Home charging costs money through your regular electricity bill but is almost always cheaper per mile than public charging.
  • Many public charging networks are free, but you need to check the specific charger or network before you plug in.
  • DC fast chargers on highways charge by the kilowatt-hour or by the minute, with costs ranging from $0.25 to $0.50 per kilowatt-hour depending on the network.
  • Some networks require a membership or app to unlock free charging, while others charge without any membership needed.

How home charging costs work

Charging at home uses electricity from your existing utility bill. The cost depends on your local electricity rate and how much energy your car needs. If you pay $0.15 per kilowatt-hour and your car's battery holds 60 kilowatt-hours, a full charge costs about $9. Most people charge overnight when rates may be lower, and many utilities offer time-of-use rates that charge less during off-peak hours.

Installing a home charger requires an upfront investment. A Level 2 charger (the standard home option) costs $500 to $2,000 installed, depending on your electrical panel and how far the charger is from your service entrance. Some utilities or local governments offer rebates that reduce this cost. Once installed, home charging is the most economical way to power an electric car because you avoid the markups that public networks add.

Free public charging networks and where to find them

Many public chargers are free to use. Retailers like Target, Whole Foods, and Ikea offer free Level 2 charging to customers. Some apartment complexes and parking garages include free charging as a building amenity. Municipalities and nonprofits sometimes operate free charging networks in public parking lots or parks.

Finding free chargers requires checking apps or websites before you arrive. PlugShare, ChargeHub, and the networks' own apps let you filter by price. Some free chargers require you to create an account or read an app, but no payment method is needed. Free chargers are almost always Level 2 (slower, taking 4 to 10 hours for a full charge) rather than DC fast chargers, so they work best for shopping trips or overnight parking rather than highway travel.

Paid public charging: membership, per-session, and per-kilowatt-hour models

Networks charge in different ways. Electrify America, Evgo, and Tesla Supercharger use per-kilowatt-hour pricing, typically $0.25 to $0.50 per kilowatt-hour. ChargePoint and Volta charge by the minute, ranging from $0.05 to $0.50 per minute depending on charger speed. Some networks charge a flat fee per session, usually $2 to $5, plus an energy charge.

Many networks offer memberships that lower per-use costs. Tesla Supercharger membership costs $13 per month and gives you lower per-kilowatt-hour rates. Electrify America's membership is $4 per month and reduces rates by about 25 percent. Without membership, you pay higher rates but only when you charge, so occasional users may save money by paying per use.

DC fast chargers on highways are almost always paid because they use expensive equipment and high-power electricity. Level 2 chargers at retail locations are more often free because the cost to operate them is lower and retailers use them to attract customers.

Workplace and retail charging

Employers increasingly offer free charging as an employee benefit. If your workplace has chargers, check with your HR or facilities department about access and cost. Some employers charge a small monthly fee ($5 to $20) to cover electricity, while others include it as a free perk. Charging at work is valuable because you can top up during an 8-hour shift without paying.

Retail charging at grocery stores, shopping centers, and restaurants is usually free because the business wants you to stay longer and spend money. These chargers are typically Level 2 and take several hours, so they suit shopping trips or dining out rather than quick top-ups. Always check the charger's signage or app before assuming it is free, because some retail locations have switched to paid networks.

How to compare charging costs across networks

To figure out which network costs least for your driving, calculate the cost per mile. If a network charges $0.35 per kilowatt-hour and your car uses 0.25 kilowatt-hours per mile, the cost is $0.09 per mile. Compare that to your home charging cost (usually $0.03 to $0.05 per mile) and to gas prices if you drove a conventional car instead.

Apps like PlugShare and ChargeHub show prices at each charger, so you can compare before you drive. Some networks offer trip planning that shows chargers along your route and their costs. If you take long highway trips regularly, a DC fast-charger membership may pay for itself. If you charge mostly at home and occasionally at retail, you may never pay anything.

Frequently Asked Questions

Do I have to pay to use a Tesla Supercharger?

Tesla Superchargers charge by the kilowatt-hour, typically $0.25 to $0.50 depending on location and time of day. You can pay per use without membership, or join Tesla's membership program for $13 per month to get lower rates. Some older Tesla owners have free Supercharging for life as part of their purchase agreement.

Can I charge for free at public chargers without an app or membership?

Some free chargers require no app or account, but many do require you to read an app or create an account before you can unlock the charger. Check the charger's label or use PlugShare to see what's required before you arrive. Paid chargers almost always require an app or membership to start charging.

What's the difference between Level 2 and DC fast charging prices?

Level 2 chargers are slower and cheaper to operate, so they're more often free or low-cost. DC fast chargers are expensive equipment that use a lot of power, so they almost always charge by the kilowatt-hour or minute. Fast chargers cost more per session but charge your car in 20 to 45 minutes instead of hours.

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

Home charging adds to your electricity bill, but the amount depends on your local rate and how much you drive. Most people find home charging costs $0.03 to $0.05 per mile, which is less than gas for a conventional car. Check your utility's rate to estimate your specific cost, and ask if they offer time-of-use rates that charge less at night.