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At the 2025 U.S. average residential electricity price of 17.30 cents per kWh, every kilowatt-hour a Tesla takes from a home outlet costs about 17 cents. A 60 kWh charging session therefore comes to roughly $10.38 at that average rate. Your actual bill depends on your own utility rate, the time you charge, and how much energy the car really draws from the wall, so the national figure is a starting point rather than a quote.
The formula that gives you your real number
Every Tesla charging cost, whether at home or at a Supercharger, comes from the same two inputs:
- Energy billed (kWh): the kilowatt-hours added to the battery during the session, as recorded on your bill or in the Tesla app.
- Rate per kWh: the price that applies at the time and place you charged.
The calculation is simply kWh billed × rate per kWh = session cost. Charging losses are already reflected in the kWh your meter or Tesla account records, so use that billed figure rather than the energy you think the battery stored.
Which electricity rate applies to you
The U.S. Energy Information Administration (EIA) publishes the most widely cited national benchmarks. Its 2026 release reports 2025 annual averages, with 2025 values marked preliminary. The figures below are not interchangeable, so match the one to your situation.
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- Dual Voltage Level 1 & 2: Charge at 120V/12A (1.44kW, 2-5 miles/hr) with the included NEMA 5-15 adapter or at 240V/16A (3.84kW, 9-12 miles/hr) with the NEMA 6-20 plug. One SEGUMA portable tesla charger gives you two charging options for everyday home charging, backup charging, and travel
- EV Charger for Tesla Vehicle-Seguma 16A mobile ev charger for tesla is specifically designed for Tesla vehicles, engineered with standardized North American Charging Standard (NACS) connector, works flawlessly with Tesla Model-Y/X/3/S/Cybe truck
- Wireless Charging Door Control-The portable mobile car charger for tesla has a button on the connector that wirelessly opens the charging port door, eliminating the need for physical keys or buttons and making charging more convenient
- Intelligent Charging-The Seguma level 1 charger offers protection against leaks, grounding, voltage issues, overcharging, and overheating. It automatically shuts off when your Tesla is fully charged. Tip: Install a home circuit breaker for extra safety
- Extended 25FT Cable-The 25-foot cable allows easy tesla charging at home or public stations. The included portable storage bag lets you take the tesla home charger anywhere, making it ideal for travel, road trips, or visits. Perfect accessory for Model Y
| EIA measure (2025 annual average) | Value | Use it for |
|---|---|---|
| Residential price, U.S. | 17.30 cents per kWh | Estimating home charging when you have no utility bill to hand |
| All customer classes, U.S. | 13.63 cents per kWh | Broad market comparison only; it blends residential, commercial, and industrial customers and is not a home charging rate |
| All customer classes, by state | 8.20 cents per kWh (North Dakota) to 35.72 cents per kWh (Hawaii) | Showing how prices vary by location; these are not residential-only ranges |
Your own residential rate is what matters for home charging. It may be higher or lower than the 17.30 cents benchmark, and it may differ by time of day.
Estimating home charging cost
Home is where most Tesla owners do the majority of their charging, and Tesla’s own support guidance says that charging at home is often the cheapest option. Tesla also notes that your savings may increase on a time-of-use rate plan designed for EV charging, if one is available where you live. That advice is general, not a guarantee for every utility territory.
To calculate a home session with your own numbers:
- Find your residential rate on your electricity bill, or on your utility’s website. Note whether it is a flat rate or a time-of-use schedule with separate on-peak, off-peak, and similar periods.
- If you have a time-of-use plan, identify the rate for the hours you actually charge. Overnight charging often falls in a lower-priced window, but confirm the exact start and end times for your plan.
- Find the kWh added for your session in the Tesla app or your charging history.
- Multiply the kWh by the rate for those hours.
In the Tesla app, the home rate plan you enter drives the home cost figures shown in Tesla Charge Stats. If that plan does not match your bill, the home cost estimates will not match your bill either. Update the plan whenever your utility changes its rate.
Rank #2
- COMPATIBILITY: Wall Connector is compatible with all Tesla models: Model S, Model 3, Model X and Model Y.
- CHARGING SPEED: Up to 44 miles of range per hour of charge, with up to 11.5 kW / 48 amp output, depending on Tesla model and breaker size.
- CONVENIENCE: Indoor or outdoor installation with variable amperage that allows max output to be customized to an existing power supply and supports any output up to 48A. Possible max output configurations include: 48A, 40A, 32A, 24A, 16A, 12A.
- CONNECTIVITY: Connecting the Wall Connector to a local Wi-Fi network enables over-the-air firmware updates for continual product improvements and remote access control.
- POWER-SHARE: Power-share is ideal for locations that need to charge more than one Tesla at the same time. This functionality allows up to six Wall Connectors to be linked for efficient power management.
Estimating Supercharger cost
Supercharger sessions are billed differently from home charging. Tesla pulls Supercharger costs from your Tesla Account billing data, so the actual amount you paid for each session is the figure to use. Do not substitute the national residential average, because a Supercharger price is set by the site and billing structure, not by your home utility. The Tesla app and your Tesla Account show the session cost once billing is complete.
Tesla’s “Total Spent on Charging” total combines home, Supercharger, and other location costs. Use it to see your overall charging spend, and split the total by location if you want to compare home and public charging.
Turning cost into cost per mile
Cost per mile equals the energy you use per mile multiplied by the rate you pay per kWh. The energy per mile depends on your model, trim, tires, weather, and driving style, so it cannot be taken from a generic table. Tesla describes its added-miles figures as estimates based on charged energy and the model and trim’s efficiency under ideal regional driving conditions. Real-world results can differ because of road conditions and heavier use, and the odometer is the better measure of miles actually driven.
Rank #3
- UP TO 9X FASTER CHARGING SPEED: The IYILO electric vehicle charging station delivers up to 46 miles of range per hour at 48A (11.5kW) via hardwired installation (60A breaker & licensed electrician required). Current is adjustable in 1A increments from 6A to 48A. Charges up to 9 times faster than a standard Level 1 charger
- AUTOMATIC CONNECTOR OVERHEAT PROTECTION: Worried about overheating during daily charging? The IYILO Level 2 EV Charger features an advanced NTC temperature sensor built directly into the NACS (Tesla-style) connector, enabling real-time temperature monitoring with live data displayed in the app. If the connector temperature exceeds 221°F (105°C), the system will automatically reduce charging power or completely shut off charging to prevent damage to your EV and ensure safe home charging.
- UTILITY CHARGING PROGRAM SUPPORT: IYILO is currently joining local utility EV charging programs and has been listed on several official portals, including but not limited to ComEd, PSEG (NJ), PSEG-LI, Seattle City Light, Salt River Project, Portland General Electric, Oregon DOT, and Georgia Power ect. Through these programs, you can take advantage of local policy support and incentives. Moving forward, we will continue expanding our partnerships with major utilities and public agencies.
- INTELLIGENT APP & SMART CHARGING CONTROL: The IYILO App features a smart, intuitive interface to set Time-of-Use (TOU) rates, track energy usage and cost, and manage multiple user accounts. It supports multiple charging modes, such as Scheduled charging and RFID card, while also offering OTA remote upgrades, ensuring optimal performance and longer lifespan. Note: Supports 2.4GHz WiFi only; 5GHz not supported
- COMPATIBLE WITH ALL NACS (J3400) EVS & PHEVS: The IYILO Level 2 EV Charger is designed with a native NACS connector and a 25ft heavy-duty charging cable, delivering seamless compatibility with all NACS-equipped electric vehicles and plug-in hybrid vehicles across North America. Engineered for Tesla-style charging standards, it ensures reliable daily home charging performance. Note: For J1772-equipped EVs, a compatible J1772 adapter is required (adapter not included)
A practical approach is to divide the kWh you charged by the miles you drove over a month. That gives you your own kWh per mile, which you can multiply by your rate to get a cost per mile that reflects your habits.
Charging equipment: a one-time cost, separate from electricity
Equipment is an upfront expense, and it does not change the per-kWh cost of the electricity itself. Tesla’s Home Charging page listed the following hardware prices when accessed. Displayed prices change, so confirm them on Tesla’s site before you buy.
| Tesla home hardware | Price displayed on Tesla’s Home Charging page | Practical note |
|---|---|---|
| Mobile Connector | $300 | Plugs into a suitable existing outlet, so Tesla does not require a Wall Connector for home charging |
| Wall Connector | $585 | A dedicated wall-mounted unit; installation adds a separate cost |
| Universal Wall Connector | $660 | A dedicated wall-mounted unit; installation adds a separate cost |
Installation cost depends on your electrical system and the type of installation. Tesla directs owners to get a quote from an installer rather than publishing a flat figure. Installing new electrical equipment can add a cost beyond the hardware itself.
Rank #4
- ⚡【8X Faster Charging – Up to 40A / 9.6kWh】Charge smarter and faster with the EVDANCE Level 2 Tesla charger. Equipped with a NEMA 14-50 plug and 240V support, it delivers up to 40A current and 9.6kWh power — up to 8X faster than standard Level 1 chargers. Spend less time waiting, more time driving.
- ✅【Adjustable Charging Current – 10A to 40A】Customize your charging speed with flexible current settings (10A/16A/20A/24A/32A/40A). Simply press the “A” button to match your charging needs and home circuit capacity, preventing overloads and ensuring safe, efficient charging every time.
- ✅【Delayed Start – Save on Energy Costs】EVDANCE Level 2 EV charger includes a delayed charging function (1–12 hours). Schedule your sessions during off-peak hours to lower electricity bills and protect your vehicle battery from unnecessary strain — charging made smarter and more economical.
- ✅【Universal NACS Compatibility – For All Tesla Models】Engineered with the official NACS connector, this 40A charger works seamlessly with all Tesla models (Model Y, 3, S, X) and any EV using the North American Charging Standard (NACS). For non-NACS vehicles, simply use a J1772 adapter. One charger for all your EVs.
- ✅【Wireless Port Door Control – No Keys Needed】Our portable charger features a built-in wireless charging port door control. Just press the button on the connector to open your Tesla charging port automatically — no more fumbling with keys or buttons. Convenience at your fingertips.
Charging speed also changes how long a session takes, though not what it costs per kWh. According to Tesla’s support page, a standard 120 V household outlet with the Mobile Connector can add about 2 to 3 miles of range per hour. A suitable existing 240 V outlet can add up to about 30 miles per hour for listed configurations.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.A worked example
Suppose a session adds 60 kWh to the battery, and your residential rate is the 2025 U.S. average of 17.30 cents per kWh. These are illustrative assumptions, not measured values for any particular Tesla.
- 60 kWh × $0.1730 = $10.38 for the session.
- If the same 60 kWh were billed at an off-peak rate of 10 cents per kWh (an assumed example, not a published tariff), the session would cost $6.00.
- If the same 60 kWh were billed at a peak rate of 30 cents per kWh (also an assumed example), the session would cost $18.00.
The spread between those last two lines shows why your own tariff schedule matters more than any national average.
Best Value
- Road-Trip Ready & Apartment-Friendly: Comes with a 20ft heavy-duty cable that easily spans a standard parking space, plus a NEMA 5-15 adapter for plug and play convenience. Whether you're charging at home or hitting the highway, this portable Tesla charger is your ultimate travel companion for weekend getaways and camping trips
- Delay Timer & Adjustable Current: Use the built-in timer to delay your start by 1-12 hours and take advantage of off-peak energy rates. Then pick from 6/8/10/12/16A(Level 2) to match your garage circuit. It remembers your preferred setting – no need to reset every time. No complicated apps or Wi-Fi needed – just straightforward, reliable control
- Tactile Buttons & LED Screen: No glitchy smartphone apps or finicky touchscreens that lag, freeze, and misfire in winter. Our Tesla charger is engineered with a high-definition LED display that tracks critical real-time data, including live voltage and current. Tactile buttons deliver direct, satisfying click feedback that remains highly responsive even when wearing heavy winter gloves or operating in torrential downpours - conditions where standard touchscreens completely fail
- ETL Certified Safety & IP65 All-Weather Shield: ETL certified to meet US safety standards for charging. Engineered with a certified IP65 dust-and-waterproof enclosure and a heavy-duty TPE cable that operates reliably across a wide -22°F to 130°F range. An intelligent multi-protection defense system (GFCI, over-voltage, over-current, surge, short-circuit, and over-temp) keeps a 24/7 watch for 100% safe, unattended overnight charging in any weather
- NACS Compatible + Dual-Level Charging: Works with all Tesla EVs. Level 2: built-in NEMA 6-20 plug. Level 1: included NEMA 5-15 adapter fits any standard outlet. Please confirm your outlet is NEMA 6-20 or 5-15 before purchase
What to check before you trust a number
- Your utility’s current residential rate and whether it is flat or time-of-use.
- The hours that count as off-peak or on-peak on your plan, and whether the plan is available to EV owners.
- The kWh shown for each session, not the battery percentage change alone.
- Whether the home rate plan in the Tesla app matches the plan on your bill.
- The exact Supercharger amounts in your Tesla Account billing history.
With those inputs, you can calculate what a full charge, a week of driving, or a month of charging costs you, rather than relying on a national average.
Sources: U.S. Energy Information Administration, 2026 release reporting 2025 annual average electricity prices (2025 values preliminary); Tesla Support, Home Charging and Charging Costs pages; Tesla Charge Stats and Tesla Account billing information as described in Tesla’s app and account materials.
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