How Much Does It Cost to Charge an Electric Car?
Estimate the real dollar cost to charge your EV based on your local electricity rate, battery size, and charging location. Numbers in examples are defaults you can change.
- Mid-range fill cost typical of home Level 2 charging for daily commutes.
- Roughly half the per-mile cost of a 30 mpg gas car at $3.50/gal (~11.7¢/mi).
- Charging losses are modest (10%), typical for this charger type.
- No TOU discount applied. Ask your utility if an EV time-of-use plan is available — many save 30–50%.
- Annual fuel estimate at 12,000 mi/yr: $610 for the EV vs $1400 for a 30 mpg gas car (savings: $790).
Wondering how much does it cost to charge an electric car at home versus on a road trip? This calculator turns your battery size, your local kilowatt-hour rate, and your charging location into a clear per-charge and per-mile cost. As an example, a 75 kWh battery filled from 20% to 80% at $0.16/kWh on a Level 2 home charger costs about $8.40 for roughly 180 miles of range — under 5 cents per mile, less than a third of what a 30 mpg gas car costs at $3.50/gallon. Adjust any input to match your car and utility.
Charging costs vary far more than gas prices because rates depend on time-of-use plans, charger efficiency losses (typically 8–15%), and whether you plug in at home, a workplace, or a DC fast charger. Public DC fast chargers in 2026 often run $0.40–$0.60/kWh — three to four times residential rates — so a 60 kWh fill that costs about $9.60 at home can climb to $30 on the road. This tool models all three scenarios so you can see your true annual fuel budget, not a marketing average.
How it works: Enter your battery capacity, the percent of charge you are adding, your electricity rate, charging efficiency, and the miles you expect from that charge. The calculator computes energy drawn from the wall, total cost, and cost per mile.
Public DC fast charging at $0.50/kWh can cost more per mile than driving a 30 mpg gas car at $3.50/gallon. If you cannot charge at home, model your real charging mix carefully before assuming EV ownership will save money. Do not rely on this tool for utility-bill forecasting if your plan includes demand charges (peak kW × $8–$15/kW) — those can add $20–$50/month for high-power home charging and are not modeled here. Battery longevity: routinely DC fast charging above 80% SoC or charging to 100% daily can accelerate battery degradation by 2–4% per year versus a 20–80% home routine.
What Drives the Real Cost of Charging an EV in 2026
The headline answer — about $8 to $15 to refill a typical EV at home — hides huge swings driven by where you plug in, when you plug in, and how efficient your car is. Here is the full picture so you can budget honestly.
Typical 2026 EV charging rates by location (US averages)
| Charging type | Power | Typical rate ($/kWh) | Cost to add 200 mi (75 kWh car, 3.5 mi/kWh) |
|---|---|---|---|
| Level 1 home (120V) | 1.4 kW | $0.16 | $10.20 |
| Level 2 home (240V) | 7–11 kW | $0.16 | $10.20 |
| Off-peak EV TOU plan | 7–11 kW | $0.07 effective | $4.50 |
| Workplace / public L2 | 6–10 kW | $0.25 | $15.90 |
| DC fast charger (50–150 kW) | 50–150 kW | $0.45 | $30.30 |
| Ultra-fast (150–350 kW) | 150–350 kW | $0.55 | $37.00 |
Annual fuel cost: EV vs gas car (12,000 miles/year)
| Vehicle / scenario | Cost per mile | Annual fuel cost | vs 30 mpg gas at $3.50 |
|---|---|---|---|
| Home L2, off-peak TOU | 2.0¢ | $240 | Saves $1,160 |
| Home L2, flat residential rate | 4.6¢ | $552 | Saves $848 |
| 50/50 home + DC fast | 8.7¢ | $1,044 | Saves $356 |
| All DC fast charging | 12.9¢ | $1,548 | Loses $148 |
| Gas car, 30 mpg, $3.50/gal | 11.7¢ | $1,400 | Baseline |
| Hybrid, 50 mpg, $3.50/gal | 7.0¢ | $840 | Saves $560 |
Charging efficiency losses by charger type
| Charger | Wall-to-battery efficiency | Energy lost | Wall kWh to add 60 kWh |
|---|---|---|---|
| Level 1 (120V) | 92% | 8% | 65.2 kWh |
| Level 2 (240V) home | 90% | 10% | 66.7 kWh |
| Public Level 2 | 88% | 12% | 68.2 kWh |
| DC fast (50–150 kW) | 85% | 15% | 70.6 kWh |
| Ultra-fast (150–350 kW) | 83% | 17% | 72.3 kWh |
Why Home Charging Is Almost Always the Cheapest Option
Roughly 80% of US EV charging happens at home, and for good reason: residential electricity in 2026 averages about $0.16/kWh nationwide, with off-peak EV plans dropping that to $0.07–$0.10/kWh. A 75 kWh fill at $0.16 costs about $13.30 including 10% charging losses. The same fill on a DC fast charger at $0.50/kWh costs $44 — more than 3× as much. Unless you live in an apartment without a plug, installing a 240V Level 2 charger (typically $400–$1,200 installed) pays back in 12–24 months for most drivers.
How Battery Size and 20–80% Charging Affect Your Bill
You rarely charge 0 to 100. Most EVs prompt you to stop at 80% on DC fast chargers because the last 20% takes nearly as long as the first 80%. A 60% top-up (20→80) on a 75 kWh battery is 45 kWh — not 75. Always enter the percent you actually add, not the battery size. A common mistake: assuming a 100 kWh truck always costs more than a 60 kWh sedan. If the truck is only adding 30% and the sedan is going 10→100, the sedan costs more that session.
What Time-of-Use Plans Really Save You
Utility TOU plans charge less for power consumed during low-demand hours, typically 11 PM to 6 AM. Dedicated EV plans like PG&E EV2-A, ComEd's Hourly Pricing, or Xcel EV Accelerate offer super off-peak rates of $0.06–$0.09/kWh — 50–65% below flat residential rates. The catch: charge during on-peak hours (4–9 PM) and the same plan can spike to $0.40+/kWh, worse than DC fast charging. Set your car or charger to start at midnight to capture the discount; most EVs have a built-in scheduled charge feature.
Why Charger Efficiency Quietly Costs You 8–17%
The kWh number on your charger or utility bill is what came out of the wall, not what went into the battery. AC-to-DC conversion, cable resistance, and thermal management losses mean only 83–92% of paid energy actually stores in the cells. Level 1 charging is most efficient (92%) because low current means low losses; ultra-fast DC chargers are least efficient (83%) because massive currents create heat. Over a year of 12,000 miles, those losses add $40–$120 to your bill — small but real, and worth modeling honestly.
Why Public DC Fast Charging Erodes EV Savings
DC fast charging in 2026 typically runs $0.40–$0.60/kWh, plus idle fees of $0.40–$1.00/minute if you stay plugged in after reaching 80%. A driver who relies on DC fast charging for half their miles spends roughly $1,000+ per year on fuel — close to what a hybrid costs. EVs make economic sense when 70%+ of charging happens at home or workplace. If you cannot charge at home, run this calculator with realistic charger-type splits before assuming an EV will save you money.
How Vehicle Efficiency (mi/kWh) Changes Everything
A Lucid Air at 4.5 mi/kWh and a Ford F-150 Lightning at 2.0 mi/kWh drink very different amounts of power for the same trip. At $0.16/kWh, the Lucid costs 3.6¢/mi; the Lightning costs 8.0¢/mi — more than double. Cold weather drops efficiency 20–30%; highway speeds above 75 mph drop it another 15–20%; roof boxes and trailers can cut it in half. Use your dashboard's lifetime average, not the EPA sticker, for honest cost forecasting. Most owners find their real-world efficiency is 10–15% below EPA.
Common Mistakes That Make EV Cost Math Misleading
Three big errors: (1) Comparing EV cost-per-mile to gas at last year's prices — use today's local pump price. (2) Forgetting demand charges or monthly EV-plan fees of $5–$15 some utilities tack on. (3) Ignoring that the calculator assumes you pay for every kWh — workplace or apartment-complex free charging changes your effective rate to $0. Conversely, if you rent and pay flat-fee charging by the session ($5–$10 per plug-in regardless of kWh), per-kWh math underestimates your true cost. Adjust the electricity rate field accordingly.
How This Calculator Works: Methodology & Parameter Explanations
Core formula:
Cost = (Battery_kWh × Charge%/100 ÷ Efficiency) × (Rate × TOU_multiplier); Cost_per_mile = Cost ÷ (Energy_to_battery × mi/kWh)where:
Battery_kWh— Usable battery capacity (kWh)Charge%— Percent of state-of-charge added (%)Efficiency— Wall-to-battery charging efficiencyRate— Base electricity rate ($/kWh)TOU_multiplier— Time-of-use adjustment vs flat ratemi/kWh— Vehicle real-world efficiency (mi/kWh)
How to apply: Multiply the per-session cost by your charging frequency to get monthly or annual fuel cost. To compare to gas, divide your gas car's price-per-gallon by its mpg to get its cost-per-mile, then compare to the EV's cost-per-mile from this tool.
Worked example: Take a 82 kWh battery, charging from 30% to 90% (60% added) on Level 2 at home (90% efficient), with a base rate of $0.18/kWh and off-peak TOU (0.65× multiplier). Energy to battery = 82 × 0.60 = 49.2 kWh. Energy from wall = 49.2 ÷ 0.90 = 54.7 kWh. Effective rate = 0.18 × 0.65 = $0.117/kWh. Cost = 54.7 × 0.117 = $6.40. At 3.6 mi/kWh, range added = 49.2 × 3.6 = 177 miles, so cost-per-mile = $6.40 ÷ 177 = 3.6¢.
Alternative formulas
Gallons-of-gas-equivalent (GGE) method: Cost_GGE = (Battery_kWh × Charge%/100) ÷ 33.7 × Rate × Eff_factor
When to use: Useful when comparing directly to gasoline; 33.7 kWh = energy in 1 gallon of gas (EPA convention).
Subscription / flat-fee plan: Cost = Monthly_fee ÷ sessions_per_month
When to use: Use for networks like EVgo or Electrify America membership where per-kWh price drops in exchange for a monthly fee.
Parameter explanations
| Input | Unit | What it means | Impact on results |
|---|---|---|---|
| Battery capacity | kWh | The usable kWh stored in your EV's battery when at 100% state of charge. Use the usable spec, not the gross — manufacturers like Tesla and Ford publish slightly different numbers. | Directly scales energy used. Doubling battery size with the same charge% doubles cost; this is the largest single driver of session cost. |
| Charge added | % | Percentage points of state-of-charge you are adding (e.g., 30→80 = 50%). This is NOT the final SoC. | Linear. Charging 100% costs ~1.67× as much as charging 60%; choosing 20–80 windows is both cheaper per session and better for battery longevity. |
| Efficiency (miles per kWh) | mi/kWh | Real-world miles your car gets per kWh consumed. Check your dashboard's lifetime average; EPA sticker mi/kWh is usually optimistic. | Inverse effect on cost-per-mile. A truck at 2.0 mi/kWh costs 75% more per mile than a sedan at 3.5 mi/kWh at the same rate. |
| Charging location | — | Determines the assumed charger efficiency (83–92%). Faster chargers waste more energy as heat in the conversion and cable. | Adds 8–17% to the kWh you pay for. Also signals likely price tier in the rate field — DC fast typically costs 2–4× home charging. |
| Electricity rate | $/kWh | Delivered price per kWh including taxes and delivery charges, as shown on your utility bill or charging app. | Linear. Doubling the rate doubles the bill. Check your most recent bill rather than guessing — rates vary 3× between states. |
| Time-of-use plan | — | Whether your utility prices vary by time of day, and when you are charging within that schedule. | Off-peak EV plans cut bills 35–55%; on-peak charging adds 45%. Single biggest behavior change available to home chargers. |
Assumptions
The number in the prompt is just an example — the calculator works for any battery size, rate, and charging scenario you enter.
Charging efficiency is averaged by location type — We use representative values (L1 92%, L2 90%, public L2 88%, DCFC 85%, ultra-fast 83%). Real efficiency varies with battery temperature, state of charge, and ambient conditions by ±3%.
TOU multipliers approximate, not utility-specific — Off-peak (0.65×), on-peak (1.45×), and EV-special (0.45×) reflect common US utility tariffs in 2026. Your actual plan may differ — check your utility's EV rate schedule.
Gas comparison uses 30 mpg at $3.50/gallon — This is a US national-average baseline for 2026. Adjust mentally if you drive a 25 mpg SUV ($4,200/yr) or a 45 mpg hybrid ($2,300/yr) at 12,000 miles.
Annual cost projection assumes 12,000 miles/year; scale linearly for your actual mileage.
Battery degradation (typically 1–2%/year) and demand charges or fixed EV-plan fees are not modeled.
How to use this calculator
- Enter your car's specs — Use your owner's manual or app for usable battery kWh, and your dashboard's lifetime mi/kWh average — not the EPA sticker.
- Set realistic charge percent — Enter how much you actually add per session (e.g., 60% if you go 20→80), not the battery size.
- Match charger type to rate — Pick the location that matches where you charge most, and enter that location's typical $/kWh — home utility rate for home, charging app price for public.
- Apply your TOU plan — If you have an EV time-of-use plan, pick off-peak or EV-special and the tool adjusts your effective rate.
- Compare scenarios — Run the calculator twice — once for your typical home session, once for a road-trip DC fast session — to see your real blended fuel budget.