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To estimate EV charging cost, multiply the energy added by the price per kilowatt-hour (kWh), then include any session, parking, or idle fees. For driving costs, multiply your vehicle’s energy use in kWh per 100 miles by the applicable electricity price and divide by 100. The right price is your actual home tariff or the public station’s current rate—not a national average.
Start with the right calculation
Use the formula that matches the question you want to answer:
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- Charging session: kWh added × price per kWh, plus applicable fees.
- Cost per mile: (vehicle efficiency in kWh per 100 miles × electricity price per kWh) ÷ 100.
- Monthly or annual driving: miles driven × vehicle efficiency in kWh per mile × electricity price per kWh. If you charge in multiple places, calculate each location’s share separately and add the costs.
- Full battery replenishment: usable battery capacity × price per kWh. This estimates charging from empty; for a typical partial session, use the kWh actually added.
For example, the U.S. Department of Energy Alternative Fuels Data Center (AFDC) illustrates the cost-per-mile calculation with 10.7 cents/kWh and a vehicle using 27 kWh per 100 miles: about $0.03 per mile. It also illustrates a roughly $6 charge for a fully depleted 54-kWh battery at that rate. These are examples on the agency’s page, accessed in 2026, not current national or local tariffs. DOE AFDC: Charging Electric Vehicles at Home.
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A separate AFDC consumer-page illustration uses 12.3 cents/kWh and estimates $2.46 to add 100 miles of range. The page also estimates about 5,000 kWh per year for an average all-electric vehicle driven 15,000 miles; your own vehicle efficiency and mileage may produce a very different result. These figures are illustrative, not a live rate or a personalized forecast. DOE AFDC: Electric Vehicles for Consumers.
#1 Best Overall
- 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. Note: WiFi is needed for certain functionalities and troubleshooting steps if connectivity issues arise.
- 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 requires a 20A or 80A circuit. For Tesla EVs, this will require an adapter.
Estimate the cost of charging at home
Use the rate that applies while the car charges
Check your utility bill or tariff for the marginal electricity rate during the hours you charge. If your utility has time-of-use pricing, use the off-peak rate only if the car can and will charge during those hours. Delivery charges, taxes, tiered rates, and other bill components can make the effective cost different from a headline supply rate. Fixed monthly charges generally should not be treated as a per-session cost unless you are explicitly calculating a broader change in your total bill.
DOE AFDC notes that residential charging costs can depend on equipment, time of day, and how long the charging station is used; some utilities offer time-of-use rates or other incentives. Check the terms for your address rather than assuming one home-charging price applies everywhere. DOE AFDC: Charging Electric Vehicles at Home.
Rank #2
- Flex Level 1 EV Charger - The EVDANCE Level 1 electric car charger is compatible with J1772 electric vehicles and plug-in hybrid vehicles (North American Standard). *Tesla requires a SAE J1772 adapter.
- Convenient to Use - This charger has both NEMA 6-20 plug for 16A 240V charging (3.68kW, 10-12 mi/h) and a NEMA 6-20 to 5-15 plug adapter for 12A 120V charging (1.44kW, 2-5 mi/h). The included bag makes it easier to carry on the go. It also has a 25ft cable length, you can use it flexibly from anywhere in the garage or driveway.
- Check Your Outlet Type -This charger works with standard 120V NEMA 5-15/5-20 outlets (2-5 mph charging speed) and 240V NEMA 6-20 outlets (10-12 mph) . It's not compatible with NEMA 6-15/10-30/14-30/14-50/6-50 outlets – you'll need a NEMA 14-50/14-30/10-30/6-50 to 6-20 adapter (sold separately) to connect.
- Compatible EV Models -This EV charger works with most major electric vehicles, including Ford, Chevrolet, Hyundai, Audi, Nissan Ariya, Rivian R1S, Kia, and others. However, it's not compatible with Mini Cooper Electric Hardtop,Toyota Prus Prime/Z4X/RAV4Prime, Porsche Taycan Base/4S/Turbo/Turbo S or Tesla models (Tesla requires a J1772 to Tesla Adapter, sold separately). For a full list of compatible models, check out the Full Compatibility List on our product page.
- Indication Displays - LED display that can tell you the status as well as indicate errors while charging your electric vehicle.
Keep energy and charging speed separate
A kilowatt-hour (kWh) measures energy; a kilowatt (kW) measures power, or the rate at which energy is delivered. EPA gives the relationship as kWh = kW × hours. A higher charger power rating can shorten charging time, subject to the vehicle’s limits, but does not by itself mean the vehicle needs more energy for the same trip. Use kWh/100 miles to estimate driving costs and battery capacity in kWh to estimate a full replenishment. EPA: Plug-in Electric Vehicle Charging: The Details.
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Choose a home setup around your needs
Level 1 charging may use a vehicle-provided cord and an existing 120-volt outlet. Level 2 can provide quicker replenishment and may suit higher daily mileage, but it may require dedicated electrical work. Consider your daily driving, how long the car is parked, the vehicle’s maximum AC charging rate, cable reach, outdoor exposure, and household electrical capacity.
Rank #3
- WORKS WITH EVERY NON-TESLA EV: Standard J1772 connector plugs straight into Ford, Chevrolet, Hyundai, Kia, Nissan, BMW, Volkswagen, Audi, Rivian, Lucid and every other EV or plug-in hybrid sold with a J1772 port - no adapter needed. Tesla drivers can charge too, using the J1772 adapter that comes with the car.
- PLUG IN, NO HARDWIRING: Level 2 charger delivers up to 40A to fully charge most EVs overnight. Plugs into a 240V, 4-prong NEMA 14-50 outlet (the RV/range type - NOT a dryer outlet) on a dedicated 50A circuit. The extra-long 25 ft cable easily reaches across a garage or driveway. Before ordering, check your car's port type and that you have the right outlet.
- CONTROL & SAVE FROM YOUR PHONE: A stronger built-in antenna keeps the charger online even in a garage or basement. Use the free app to start/stop charging, set speed (6-40A), get reminders, and track energy use and cost. Schedule off-peak overnight charging to cut your electric bill. Requires 2.4 GHz WiFi.
- SAFETY-CERTIFIED & WEATHERPROOF: Independently tested and certified (UL, ETL, FCC, Energy Star). A fully sealed IP66 / NEMA 4 housing stands up to rain, snow, heat and dust indoors or out, and internal steel shielding protects the electronics for years of reliable use.
- GLOW-IN-THE-DARK HOLSTER: The included high-visibility holster glows in the dark so you can find and dock the plug easily at night. Holds the connector securely when not in use.
EPA’s general planning guidance says a 40-amp Level 2 charger requires a 50-amp dedicated circuit. It recommends an electrician’s assessment, with permits and inspection as applicable; this is not a wiring instruction. Exact requirements depend on equipment and local rules. EPA also says 48-amp-or-higher equipment is generally hardwired and advises hiring an electrician for a new circuit. EPA: Getting Started with Home EV Charging.
EPA lists planning ranges of $400–$1,000 for home Level 2 equipment and $300–$2,000 for installation. The actual amount depends on charger features and amperage, panel capacity, distance to the panel, location, and possible electrical upgrades. Treat these as one-time setup costs, separate from the electricity cost of a charging session. Check local utility, state, or federal programs by address and current eligibility terms rather than assuming an incentive applies. EPA: Getting Started with Home EV Charging.
Rank #4
- WORKS WITH EVERY NON-TESLA EV: Standard J1772 connector plugs straight into Ford, Chevrolet, Hyundai, Kia, Nissan, BMW, Volkswagen, Audi, Rivian, Lucid and every other EV or plug-in hybrid sold with a J1772 port - no adapter needed. Tesla drivers can charge too, using the J1772 adapter that comes with the car. The extra-long 25 ft cable easily reaches across a garage or driveway.
- HARDWIRED - PROFESSIONAL INSTALL: This Level 2 charger is hardwired (not plug-in), so a licensed electrician installs it per National Electrical Code. It delivers up to 48A on a dedicated 60A, 240V circuit - enough to charge most EVs fully overnight. Want more speed? You can set DIP switches 4 and 5 to unlock 50A on a dedicated 70A circuit. Before ordering, check your car's port type and that your electrical panel can support the circuit.
- CONTROL FROM YOUR PHONE: A stronger built-in antenna keeps the charger online even in a garage or basement. Use the free app to start and stop charging, set the charging speed (6-48A), get reminders, and track how much energy and money each charge uses. Requires a 2.4 GHz home WiFi network.
- SAFETY-CERTIFIED & WEATHERPROOF: Independently tested and certified (UL, ETL, FCC, Energy Star). A fully sealed IP66 / NEMA 4 housing stands up to rain, snow, heat and dust indoors or out, and internal steel shielding protects the electronics for years of reliable use.
- GLOW-IN-THE-DARK HOLSTER: The included high-visibility holster glows in the dark so you can find and dock the plug easily at night. Holds the connector securely when not in use.
Estimate the cost of public charging
Public chargers may bill by kWh, by time, per session, or through a subscription; some locations may be free. DOE AFDC says public charging—especially DC fast charging—can cost more than home electricity, but the price depends on the station, network, and billing structure. EPA says payment may be by credit card, app, monthly subscription, or Plug and Charge. DOE AFDC: Electric Vehicles for Consumers; EPA: Plug-in Electric Vehicle Charging: The Details.
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- Per kWh: Multiply delivered kWh by the posted rate, then add applicable session, parking, and idle fees.
- By time: Estimate the charge duration and check how the operator bills for time, including any rounding or rate changes with power.
- Subscription: Add the membership fee to the expected discounted charging cost, then compare that total with pay-as-you-go charging for the same expected use.
Check the operator’s app or station display before charging; public rates and terms vary by location and can change. Do not assume a subscription saves money without comparing the total cost for your expected use.
Best Value
- [Up to 9x Faster Charging Speed]: Provides up to 46 miles/hour charging speed via hardwired connection (48 amp - up to 9x faster than a standard wall outlet) or up to 38 miles/hour via the NEMA 14-50 plug (40 amp). Professional installation recommended for optimal safety and performance. [Install The Power Outlet Cord]: No smaller than 8AWG if charge 40-48A, we suggest 6AWG cord.(1.The input side is belongs to the electrician electric automobile regulation scope, need to use three 6AWG cable wires for 48A; 2.The charging cable belongs to the automotive connector certification standard, so the 8AWG cable can meet the 48A.)
- [DESIGNED WITH J1772 Connector for All North America j1772 Connector EVs/PHEVs. Not fits for Tesla/Nacs Connector Cars(j1772 to Tesla adapter needed)]: Compatible with Tesla cars (Adapter needed, not included), Ford, GM, Audi, Kia, Honda, Kia, Hyundai, Gmc, Chevrolet Bolt, VW ID 4, Nissan Leaf, Ford Mustang Mach-E, IONIQ 5 2024 and before, BMW i3, i4, iX, Jeep Wrangler 4xe, etc. [Not fits for Nac connector cars-Kia EV6 2025/EV9,Ariya 2025&2025 loniq 5(J1772 to Tesla adapter needed)]
- [Safety & Faster Charging with ETL, FCC, Energy Star Certified]: Meets the Safety Criteria Defined by: SAE J1772, UL2231-1/-2, UL 991, UL 2231, UL 2251, UL1998 and UL 2594. (ETL and FCC certified EV car charger with 3-year Warranty)
- [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.
Account for charging speed and parking terms
EPA describes DC fast chargers as commonly rated 50–350 kW, while noting that a vehicle’s maximum accepted speed limits charging power and that charging can slow as the battery approaches full. Higher power may save time, but it does not automatically lower the bill: use the station’s billing method and the session’s actual energy. EPA: Plug-in Electric Vehicle Charging: The Details.
Check signage and operator terms for idle fees and parking charges, and move the car when charging ends if required. The Australian Government’s charging guidance highlights idle fees as a factor to check; it does not establish U.S. fee rules, which depend on the operator and jurisdiction. Australian Government: How to charge your electric vehicle.
Compare home charging, public charging, and gasoline fairly
For two charging options, compare the all-in cost for the same energy or miles—not just the headline price per kWh. Include the vehicle’s efficiency, the share of charging done at each location, the applicable fees, and the convenience or time involved. If you are evaluating whether home equipment pays off, include its one-time equipment and installation expense separately from recurring energy costs.
Charging is typically cheaper than gasoline according to EPA, but the result depends on electricity and fuel prices. There is no universal answer for every vehicle or charging session. EPA points to the FuelEconomy.gov fuel-cost calculator for a comparison personalized to vehicle, fuel price, driving pattern, and time horizon. DOE AFDC’s tools directory also lists a Vehicle Cost Calculator, a charging hub costing tool, a station locator, a laws and incentives search, and a utility-finder resource; these can help locate relevant information but do not guarantee a particular tariff or rebate. EPA: Plug-in Electric Vehicle Charging: The Details; DOE AFDC: Tools.
Quick Recap
Gather these figures for your own estimate
- Your vehicle’s efficiency in kWh per 100 miles.
- Your miles driven in the period you want to estimate.
- Your home tariff during the hours the car will charge.
- The public station’s current rate and billing method.
- Any session, parking, idle, or subscription costs that apply.
- The kWh added in a typical session, if you want a session-cost estimate rather than a mileage estimate.
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