EV Home Charging Cost Calculator
Find out what charging your electric car at home really costs per month, per full charge and per mile. Pick your car and your state, and the calculator fills in your local electricity rate, gas price and public charging price for you.
Is it expensive to charge an electric car at home?
For most households, no. Home charging is the cheapest way to fuel any car on the road right now. At the national average rate, a mid-size EV costs about $4.59 to drive 100 miles on home power. A 28 MPG gas car costs $16.00 for the same 100 miles at $4.48 a gallon.
Here is a simple way to sanity check it. With gas at $4.48, an EV using 25 kWh per 100 miles only costs more to fuel than a 28 MPG car if you pay more than 64¢ per kWh. No state average comes close. Hawaii is the highest at 52.72¢, and even there home charging still saves around $900 a year.
That said, we see the same five situations again and again where people open their first bill after buying an EV and get a surprise.
Plugging in at 6pm on a time-of-use plan
Several large utilities now put customers on time-of-use rates by default. If your car starts charging the moment you get home, you are buying power at the most expensive hour of the day. Set a scheduled start time in the car or charger app.
A tiered bill with a low first block
A typical EV adds 250 to 400 kWh a month. On a tiered plan that can push the whole household into a pricier block, so part of your normal usage gets billed higher too.
A big electric truck or three-row SUV
An F-150 Lightning or Rivian uses close to 48 kWh per 100 miles, almost twice what a Model 3 uses. Every rate decision you make gets multiplied by that.
A 120V outlet that cannot keep up
The outlet itself is cheap to use. The problem is that it adds only about 5 miles per hour, so high-mileage drivers end up topping off at public fast chargers at two to three times the price.
Cold winters are the fifth one. Heating the cabin and battery can raise winter consumption by a third, which is why the calculator has a climate setting. Our cold weather EV range guide shows how much each month moves.
The formula, and the three numbers people get wrong
The math is simple. What trips people up is which numbers go into it.
Cost = (miles ÷ 100) × kWh per 100 miles × charger adjustment × rate per kWhOne charge = kWh added to the battery ÷ charger efficiency × rate per kWh
1. Energy use, measured at the wall
We start from the EPA kWh per 100 miles figure, not the battery size. The EPA measures that number on the recharge side, from the outlet, so normal Level 2 charging loss is already inside it. A lot of calculators take that figure and divide by 90% efficiency again, which inflates the answer by about 10%.
What we do adjust for is your equipment. A 120V outlet runs a session for fifteen hours instead of six, with the car’s electronics and battery cooling awake the whole time. That uses about 6% more energy than the Level 2 baseline in the EPA test. A 48A hardwired unit uses about 1% less.
For a single charge the logic flips. There you know how much energy goes into the battery, so you do divide by charger efficiency to get what the meter records.
2. The rate for the next kWh, not your average
Dividing your total bill by the kWh you used gives the wrong number, because it spreads the fixed customer charge across every kWh. That charge does not change when you plug in a car. What you want is the marginal rate: the supply or generation charge plus delivery per kWh, plus any per-kWh riders. On tiered plans the marginal rate can be the upper tier, which is why the calculator has a tiered option that raises the price rather than lowering it.
3. Home and public priced separately
Blending home and road charging into one average rate is the third common mistake. Someone charging 95% at home pays a very different yearly figure from a 60/40 driver with identical mileage, because public charging costs two to three times more per kWh. The calculator prices each stream on its own and adds them. Public sessions use a 93% efficiency blend of Level 2 and DC fast charging.
Work it out by hand in four steps
25 × $0.1834 = $4.59 per 100 miles. Divide by 100 for 4.6¢ per mile.135 × $4.59 = $619 a year, or about $52 a month.Level 1 vs Level 2 charging cost at home
Here is the part that surprises people: the slow outlet costs slightly more per mile, not less. A longer session means the car’s systems draw power for more hours.
| Equipment | Power | Efficiency | Metered kWh | Cost | Range per hour | Good fit for |
|---|---|---|---|---|---|---|
| 120V household outlet Level 1, 12A, no install | 1.4 kW | 85% | 52.9 | $9.71 | about 5 mi | Under 40 miles a day, or a plug-in hybrid |
| 32A on a 40A circuit Level 2, plug-in or hardwired | 7.7 kW | 90% | 50.0 | $9.17 | 31 mi | Most single-EV households |
| 40A on a NEMA 14-50 Level 2, 50A circuit | 9.6 kW | 90.5% | 49.7 | $9.12 | 39 mi | Larger batteries, shorter off-peak windows |
| 48A hardwired Level 2, 60A circuit | 11.5 kW | 91% | 49.5 | $9.07 | 47 mi | Trucks, two EVs, 3 to 4 hour TOU windows |
The cost gap is small, about 60 cents a session. The practical gap is big. A 12-hour overnight plug on 120V adds around 60 miles, which covers an average day with little to spare. A 7.7 kW unit puts back about 250 miles in eight hours, so one long day never spills into the next.
What a home charger install costs, and how fast it pays back
A mainstream Level 2 unit costs $350 to $750. A straightforward install, with a short run from the panel to an attached garage, a new breaker, a permit and inspection, usually lands between about $1,000 and $2,000 including the charger. The panel is what breaks budgets. Use the estimator for a planning range, then get two quotes.
If two quotes differ by more than about $1,000, one electrician has probably assumed a panel or service upgrade and the other has not. Ask both for the load calculation. A load management device, which pauses or slows the charger when the house is using a lot of power, is often a cheaper answer than a full service upgrade, and the National Electrical Code allows sizing the circuit around it.
What if you need to run power from the road to the house?
Most EV installs never touch this. It only comes up when a home needs a new or bigger service line from the street or pole, usually as part of a 200A upgrade or on a rural property. That work is coordinated with your utility, and underground runs are commonly quoted around $20 to $50 per foot for the trench, conduit and cable, plus the utility’s own connection fees. Overhead drops cost less. Many utilities pay for part of the line or the transformer, so call them before you hire anyone.
Where home charging saves the most
Cheap electricity is only half the story. What decides your saving is the gap between your power price and your gas price, and states with pricey power often have pricey gas too. That is why California, with the second-highest electricity rate in the country, still saves more than Texas.
| State | Power rate | Gas price | EV per mile | EV per year | Gas per year | You save |
|---|---|---|---|---|---|---|
| Washington | 14.91¢ | $5.55 | 3.7¢ | $503 | $2,675 | $2,172 |
| Nevada | 13.11¢ | $5.37 | 3.3¢ | $442 | $2,587 | $2,145 |
| Utah | 13.37¢ | $4.98 | 3.3¢ | $451 | $2,401 | $1,950 |
| California | 34.74¢ | $6.24 | 8.7¢ | $1,172 | $3,007 | $1,834 |
| Arizona | 15.18¢ | $4.78 | 3.8¢ | $512 | $2,306 | $1,793 |
| Illinois | 19.89¢ | $4.85 | 5.0¢ | $671 | $2,339 | $1,667 |
| Florida | 15.10¢ | $4.38 | 3.8¢ | $510 | $2,113 | $1,603 |
| Michigan | 22.99¢ | $4.81 | 5.7¢ | $776 | $2,317 | $1,542 |
| US average | 18.34¢ | $4.48 | 4.6¢ | $619 | $2,160 | $1,541 |
| Ohio | 19.19¢ | $4.43 | 4.8¢ | $648 | $2,135 | $1,487 |
| Pennsylvania | 21.73¢ | $4.55 | 5.4¢ | $733 | $2,195 | $1,462 |
| Georgia | 16.36¢ | $4.11 | 4.1¢ | $552 | $1,980 | $1,428 |
| Texas | 15.94¢ | $3.96 | 4.0¢ | $538 | $1,908 | $1,370 |
| New York | 29.49¢ | $4.49 | 7.4¢ | $995 | $2,165 | $1,169 |
| Massachusetts | 29.61¢ | $4.40 | 7.4¢ | $999 | $2,120 | $1,121 |
| Hawaii | 52.72¢ | $5.57 | 13.2¢ | $1,779 | $2,687 | $908 |
Two things stand out. Home charging beats a 28 MPG car in every state, including Hawaii. And the high-rate states are where a time-of-use plan pays off most. Moving a California household to an overnight window is worth several hundred dollars a year on its own, which is more than the efficiency gap between most cars you might be choosing between. Every state, plus DC, is in the calculator above and on our EV charging cost by state page.
Why the home charging share moves your result so much
Most EV charging in the US happens at home, and that is where the savings come from. As soon as more of your miles come from public plugs, the math changes quickly.
| Charging mix | Yearly cost | Per mile | Extra vs all home |
|---|---|---|---|
| 100% home | $619 | 4.6¢ | none |
| 95% home, 5% public | $657 | 4.9¢ | +$38 |
| 85% home, 15% public | $733 | 5.4¢ | +$114 |
| 70% home, 30% public | $847 | 6.3¢ | +$228 |
| 50% home, 50% public | $999 | 7.4¢ | +$380 |
| 100% public | $1,378 | 10.2¢ | +$759 |
| 28 MPG gas car at $4.48 | $2,160 | 16.0¢ | +$1,541 |
A driver with no home plug pays more than twice what a homeowner pays for the same miles in the same car. That is still cheaper than gas at today’s prices, but the margin shrinks from four figures to a few hundred dollars, and for a heavy truck it can disappear. Our breakdown of public EV charging costs prices each major network, including memberships.
Fees that a home charge never has
Session fees
Around a dollar per plug-in on some networks. Barely noticeable on a 60 kWh road trip stop, but it adds about 10¢ per kWh to a small top-off.
Idle fees
Charged when the session ends and the car is still in the stall. Electrify America bills $0.40 a minute after a ten-minute grace period at most sites, and Tesla’s idle fees rise when a site is busy.
Per-minute billing
Still used where state rules block non-utilities from selling power by the kWh. A slow-charging car pays the same clock rate as a fast one for far fewer kWh.
Peak pricing
Tesla and a growing number of other networks change price by hour. The same stall can cost noticeably more at 6pm than at 10am.
No garage? Your options, from cheapest to priciest
Set the home share slider to what you can realistically manage and the calculator shows your true cost. In rough order of cost per mile, these are the options most people without a garage end up using.
A 120V outlet you already have access to. With your landlord’s OK, an outdoor outlet near your parking space covers 50 to 60 miles a night at your home rate. Several states, including California, Colorado, Illinois and New Jersey, have right-to-charge laws that give renters or condo owners a formal way to ask for a charger and limit how a landlord or HOA can refuse.
Workplace charging. Often free or close to home rates. If your employer offers it, it can do most of the work a home charger would.
Paid public Level 2. Garages, grocery stores and curbside units usually cost 25 to 40¢ per kWh. Fine if you park for a few hours anyway.
DC fast charging. The most expensive way to buy the energy, and the one to plan around if nothing else is available. Model your case with the home share at zero before you buy, especially for a truck or large SUV. Our guide to EV charging without a garage covers each option in more detail.
Home charging cost questions
No, for most households it is the cheapest way to fuel a car. At the June 2026 US average of 18.34¢ per kWh, a typical EV costs about $4.59 per 100 miles on home power, against about $16 for a 28 MPG gas car at $4.48 a gallon. It gets expensive when you charge at peak hours on a time-of-use plan, get pushed into a higher tier, drive a large electric truck, or rely on public fast chargers because a 120V outlet cannot keep up.
For a typical EV using 25 kWh per 100 miles and driven 13,500 miles a year, about $52 a month if every charge happens at home at the US average rate, or about $61 a month if 15% of your miles come from public chargers. In low-rate states such as Nevada and Utah, all-home charging runs about $37 to $38 a month. In California it is closer to $98, and in Hawaii about $148. An overnight time-of-use rate typically cuts the home portion by around 40%.
Take the usable battery size, divide by 0.90 for Level 2 charging loss, and multiply by your rate. A 78 kWh pack draws about 87 kWh from the meter, which is $15.89 at the US average and gives roughly 350 miles. A 131 kWh truck pack costs about $26.70, and a 60 kWh compact about $12.23. Most owners rarely do a full charge. A typical nightly top-off is 10 to 20 kWh, which costs $2 to $4.
Multiply your car’s kWh per 100 miles by your per-kWh electricity rate to get the cost per 100 miles, then scale it to your driving. For example, 25 kWh per 100 miles times $0.1834 is $4.59 per 100 miles, and 13,500 miles a year is $619. Use the EPA kWh per 100 miles figure, which already includes normal charging loss, and your marginal rate rather than your total bill divided by kWh.
Both numbers are right. The car reports energy stored in the battery and the meter records energy drawn from the grid. The difference is charging loss: heat in the onboard charger, cooling fans, and the battery management system staying awake. Expect about 10% on Level 2, closer to 15% on a 120V outlet, and around 5% on DC fast charging, which skips the car’s onboard charger. Cold weather widens the gap because some energy goes into warming the pack.
A typical EV adds 250 to 400 kWh a month. At the US average rate that is roughly $45 to $75 on the bill, or about a quarter to a half more than the average home’s 930 kWh month. On a tiered plan the car can push you into a higher block, so use the upper tier price in the calculator. Time-of-use plans, EV-only rates and separate EV meters all exist to keep car charging out of your household tiers.
For most drivers with a garage or driveway, yes, but not because of the electricity price. Level 1 uses only about 6% more energy than Level 2. The real difference is speed: 120V adds about 5 miles an hour, which cannot recover from a long day, so drivers end up buying public charging at two to three times the price. Against public-only charging at average rates, a typical $1,000 to $2,000 install pays back in roughly one to two years. If you drive under about 6,000 miles a year and park at home every night, a 120V outlet may be all you need.
Most EV charger installs do not need this. It comes up when a home needs a new or larger service line from the street or pole, often during a 200A service upgrade or on a rural lot. Underground runs are commonly quoted around $20 to $50 per foot for trenching, conduit and cable, plus utility connection fees, and overhead drops usually cost less. Many utilities cover part of the line, so contact yours first. For the charger itself, the run that matters is from your panel to your parking spot.
Not for a new install. The Section 30C credit, worth 30% of equipment and installation up to $1,000, only applies to chargers placed in service on or before June 30, 2026. The One Big Beautiful Bill Act moved that end date forward from 2032. It was also limited to homes in eligible low-income or non-urban census tracts. If your charger was running by the deadline, claim it on your 2026 return with Form 8911. Otherwise, check utility rebates and state programs.
The price per kWh is the same either way, so a full charge only costs more because it holds more energy. The reason to stop at 80% for daily driving is battery life, not money: sitting at a high state of charge stresses nickel-based cells. Lithium iron phosphate (LFP) packs are the exception and generally want a regular full charge so the range estimate stays accurate. Our battery degradation calculator shows the difference for your car.
You know your home cost. Now see the full picture against gas.
Add purchase price, insurance and maintenance to the fuel numbers above and see which car is actually cheaper to own in your state.
5.4¢ a mile at home and public