In the United States, a useful home-charging benchmark is about $10.38 to add 60 kWh at the 2025 national residential average of 17.30 cents per kWh. The same amount of energy costs roughly $12 to $15 at a public AC Level 2 charger and $24 to $36 at a public DC fast charger when using the approximate ranges reported by the U.S. Department of Energy and National Renewable Energy Laboratory. Those are national or dated benchmarks, not universal prices. Your actual bill depends on the electricity your car draws, your utility tariff, the charger’s billing method, membership status, and extra station fees.
The basic calculation: energy added multiplied by the applicable rate
For any charging session, start with the electricity supplied, measured in kilowatt-hours (kWh), and multiply it by the price that applies to that session:
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Electricity cost = kWh delivered or drawn × price per kWh
Using the U.S. Energy Information Administration’s 2025 national residential average of $0.173 per kWh:
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- 20 kWh costs about $3.46.
- 40 kWh costs about $6.92.
- 60 kWh costs about $10.38.
- 75 kWh costs about $12.98.
The 60-kWh example is arithmetic using a published average, not a test of a particular vehicle. A car may accept less than the battery’s advertised capacity during a session, and a dashboard may report energy added to the battery while a household meter measures electricity drawn from the wall. The available sources do not establish one general charging-loss percentage, so use the kWh shown by your charging equipment or utility meter when you want a wall-to-battery cost.
This calculation covers electricity only. A home charger, electrical work, a public-network session fee, parking, or an idle fee can change the total amount paid.
Why your home cost can be far above or below the national average
Your utility’s marginal rate matters
EIA’s 17.30-cent figure is a national residential retail average built from utility sales revenue and volume. It is not a tariff offered to every household. In 2025, EIA reported an all-customer state range from 8.20 cents per kWh in North Dakota to 35.72 cents in Hawaii. That comparison includes all customer classes, not residential customers alone, so it should not be treated as a household-only range.
At those two all-sector rates, 60 kWh would represent about $4.92 and $21.43 respectively. Your own residential rate may be different. Fuel availability, power-plant costs, transmission and distribution, weather, and regulation all affect local prices.
Time-of-use and tiered tariffs
Some utilities charge different rates by time of day, season, or usage tier. Charging overnight may be inexpensive on an eligible time-of-use plan, while charging during a peak window can cost more than the national average. EIA does not publish household-specific peak and off-peak schedules, demand charges, or complete utility rate sheets. Check your bill and your utility’s tariff for the marginal price, the exact hours, seasonal rules, and eligibility requirements. The U.S. Department of Energy-sponsored Utility Rate Database is another place to identify a tariff before relying on an off-peak estimate.
Residential averages are not a promise of a monthly bill
EIA also reported 2025 national averages of 13.41 cents per kWh for commercial customers, 8.62 cents for industrial customers, 13.83 cents for transportation customers, and 13.63 cents across all customer types. Those figures describe broad customer classes and are not substitutes for a home’s rate. A household should calculate the additional kWh at the rate that actually applies when the car charges.
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How to calculate your own home-charging cost
- Find the energy amount. Use the session’s kWh reading from the car, wallbox, charger display, or a dedicated meter. Record whether the value represents energy delivered to the vehicle or electricity drawn from the premises.
- Identify the applicable tariff. Read the electricity bill or utility rate schedule. For a time-of-use plan, match the session to the correct time and season. For a tiered plan, determine whether the charging pushes household usage into another block.
- Convert cents to dollars. Divide cents per kWh by 100. For example, 17.30 cents becomes $0.173.
- Multiply kWh by the rate. A 32-kWh session at $0.173 per kWh costs $5.54 for electricity (32 × 0.173).
- Add separate charges only if they apply. Include a utility delivery charge that varies with usage if your tariff bills one, but do not mix a fixed monthly customer charge into the cost of one session unless you are calculating total household economics.
If you are comparing a home installation with public charging, keep the recurring electricity cost separate from the one-time cost of the charger, circuit, permits, and installation. Those equipment costs affect the payback period, not the marginal price of a kWh.
What public charging usually costs
Public stations do not have one standard price. The Department of Energy Alternative Fuels Data Center (AFDC) lists four common billing structures: by kWh, by session, by time, and through a subscription. A station can also combine a service fee, parking charge, or idle fee with its energy price. Rates may differ for members and non-members, by vehicle owner, by site host, and by charging speed.
Approximate U.S. benchmark ranges
A DOE/NREL-hosted report using 2024-era inputs gives the following approximate averages:
| Charging situation | Approximate price | What the figure means |
|---|---|---|
| Home or private AC Level 2 | About $0.17/kWh | Approximately the residential electricity input used in the report; not a universal utility tariff. |
| Public AC Level 2 | About $0.20–$0.25/kWh | Dated national context from the report; a site may bill by time, session, or kWh instead. |
| Public DC fast charging | About $0.40–$0.60/kWh | Dated national context; station, region, membership, and power level can move the price substantially. |
At those ranges, adding 60 kWh would cost about $12–$15 on public AC Level 2 and $24–$36 on DC fast charging before any additional session, parking, or idle fees. The report focuses on medium- and heavy-duty charging infrastructure and uses cited 2024 inputs, so treat these numbers as historical approximations rather than an October 2026 quote for a particular network or light-duty car.
Per-kWh pricing
Per-kWh billing is the easiest to compare with a home rate: multiply the energy delivered by the posted price. Confirm whether the displayed rate includes taxes, a connection fee, or a different member rate. Some jurisdictions regulate whether a charging operator may bill by kWh, so a network may use another method even when its electricity cost is effectively energy-based.
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- Charge with Confidence: ChargePoint builds reliable, flexible EV charging stations for home, business, and fleets. Get 24/7 support and access to hundreds of thousands of North American charging locations
- Charge Smart: With the user-friendly ChargePoint Mobile App, you can control your electric car charger, manage reminders, connect to smart home devices, find stations, get data and charging info, and access the latest features
- Vast Network: Wherever you go, ChargePoint’s network includes 274k+ stations across North America and Europe and 565k+ roaming partner stations
- Safe & Durable: Rely on this UL-certified EV charger for safe home charging. It can be installed indoors or outdoors by an electrician and includes a cold-resistant cable
- Fast & Powerful: This EV charger charges 9× faster than a 120V outlet, delivering up to 45 mi/hr., dependent upon your vehicle. It features a J1772 connector for all non-Tesla EVs and plugs into a 240V outlet with a 14-50 receptacle, requiring a 40A or 50A circuit. For Tesla EVs, this will require an adapter
Per-session and time-based pricing
A flat session charge can make a short top-up expensive and a large charge relatively economical. Time-based billing charges for minutes or hours connected, sometimes with different rates after a grace period. It can reward a vehicle that accepts power quickly, but it can also continue while the car is full or charging slowly. Check for idle-time billing and move the vehicle when the station’s rules require it.
Subscriptions and member rates
A subscription may reduce the per-kWh or per-minute rate in exchange for a recurring fee or other conditions. Compare the total monthly cost with the non-member price for the amount you actually expect to charge. Check whether the lower rate applies at every station, only during certain hours, or only to a specific vehicle account. AFDC documents member and non-member pricing as common possibilities but does not establish terms for a particular network.
Fees that can make a public session cost more
- Service or session fees: a fixed amount added when a plug is activated.
- Time or idle fees: charges that begin after a grace period or continue after the vehicle has stopped taking energy.
- Parking: a separate garage, curbside, or destination parking charge.
- Different site-host pricing: the same network can display different prices at different locations.
- Membership conditions: a lower member rate may require a recurring payment, account, or minimum usage.
Review the network application, the station screen, and posted signs immediately before plugging in. The live station price is more useful than a national average when deciding whether to make a particular stop.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Home AC Level 2 versus public AC and DC fast charging
Home or private AC Level 2
Home charging normally uses your household tariff and is often the most predictable option. A private Level 2 installation can deliver substantially more energy than a standard household outlet, but the charger purchase and electrical installation are separate upfront expenses. Confirm that the vehicle connector, circuit capacity, panel, wiring, and local permitting requirements are compatible before buying equipment. The electricity estimate remains kWh multiplied by the applicable home rate.
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Public AC Level 2
Public AC Level 2 is generally slower than DC fast charging and may be priced close to, or somewhat above, a residential rate. It is useful when the car will be parked for an extended period. Because stations may bill by the hour or impose parking rules, compare the total time you expect to remain connected, not just the nominal energy price.
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- [Plug-play Mode(The Default Setting), Smart Touch Screen, No APP Needed]: Clearly show the charging amperage, charging speed, input voltage, delay time, etc. For the touch buttons: 1. Pull out the charging gun before press the buttons, otherwise no respond; 2. Long press "Ⓐ" or "Time" button to enter the setting interface, then you can adjust the amperage from 16A to 48A freely or Set the charging start time; 3. You can do "factory reset" if doesn't charging.
- [Smart WIFI APP, You can Set the Charging Period]: By APP, you can wirelessly check the charging cost, history, fully-charged notification, track the charging status, during off-peak period, etc. [Wi-Fi Reset/Factory Reset Function, Add New Device Quickly]: If you can't find your device or you have replaced a new phone, just pull out the charging latches, simultaneously long press the Ⓐ button and time adjustment button on the product screen until it shows "Factory Reset", then wait 3-5 seconds and re-start your device.
Public DC fast charging
DC fast charging sends direct current to the vehicle’s battery at a high power level. The cited DOE/NREL benchmark of $0.40–$0.60 per kWh is higher than the public AC estimate, reflecting equipment, demand, network, and operating costs as well as electricity. Charging power can taper as the battery fills, so a time-based price may produce a different result than a per-kWh price for the same stop. Use the station’s live terms and the vehicle’s charging curve when estimating a trip.
Free public charging: useful, but not guaranteed
AFDC states that more than 20% of public charging, including Level 1, Level 2, and DC fast charging, is free to use according to its page accessed October 13, 2026. The figure is broad and does not guarantee a free station near you, an available connector, or unrestricted dwell time. A “free” station may still sit in a paid parking facility or impose time limits. Verify the location’s rules before treating a session as zero-cost.
Worked examples for common situations
Example: a 60-kWh home session
At the 2025 national residential average, 60 kWh × $0.173 equals $10.38 for the electricity component. If your tariff is 12 cents per kWh, the same 60 kWh is $7.20; at 30 cents, it is $18.00. These figures change if the measured wall energy differs from the energy shown by the vehicle.
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Example: a workplace-style 15-kWh charge
A 2025 Federal Energy Management Program guide gives an institutional example of 15 kWh at $0.127 per kWh, or $1.90 for electricity. It uses the 2023 national average and is not a current public-station quote. It illustrates why a small top-up can cost only a few dollars when the energy amount and rate are both modest.
Example: comparing a public stop
Suppose a station delivers 25 kWh. At the dated public AC benchmark of $0.20–$0.25 per kWh, the energy portion is $5.00–$6.25. At the dated DC fast benchmark of $0.40–$0.60, it is $10.00–$15.00. A $2 session fee, parking charge, or idle fee would be added to either result; a member discount could lower it.
A practical checklist before you plug in
- Record the kWh you expect to add, not only the battery percentage.
- For home charging, identify the exact utility rate and any off-peak window.
- For public charging, check the current price, billing unit, and member status in the network’s app or on the station.
- Look for session, service, parking, and idle fees.
- Confirm whether a subscription’s recurring fee is worthwhile for your expected usage.
- Separate charging electricity from the one-time cost of installing home equipment.
- Keep national averages labeled as benchmarks; do not use them as a quote for a named station or a particular household.
What “really costs” means in a fair comparison
For a clean comparison, state four boundaries: the kWh measured, whether it is wall energy or battery energy, the price basis, and the date and geography of the rate. A national average can show the order of magnitude, but only your utility tariff and the station’s posted terms determine what you will pay. Home charging can be cheapest when the marginal residential rate is low, while public DC fast charging buys speed and trip flexibility at a commonly higher price. Neither benchmark includes the ownership cost of the vehicle, charger installation, maintenance, or parking unless those items are explicitly added to the calculation.
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