How much does it cost to charge an electric car?

The short answer and the formula

Charging an EV at home usually costs far less than fueling a gas car. You pay your electricity rate times the energy added, so fully charging a 60 kWh battery at an average US home rate of about $0.17 per kWh (EIA) runs about $11.59 — roughly $5.50 per 100 miles at 3.5 mi/kWh (fueleconomy.gov). Public Level 2 costs more, and DC fast-charging can be 2-3x the home rate. Your real cost depends on battery size, local rates, and where you charge.

The arithmetic is simple once you account for one thing most quick estimates miss: charging losses. The energy that ends up in your battery is not the energy your meter bills. AC charging loses roughly 10-15% as heat in the cable, the onboard charger and the battery, so a charge efficiency of about 88% is realistic (AFDC). The formula we use in the EV charging cost calculator is:

energy_into_battery = battery_kWh * (target_SOC - start_SOC)
energy_from_wall    = energy_into_battery / charge_efficiency
charge_cost         = energy_from_wall * price_per_kWh

That last step — billing the energy drawn from the wall, not the energy stored — is why a 60 kWh charge draws closer to 68 kWh and costs a little more than a back-of-envelope guess.

Cost per charge and per 100 miles at home

A full charge cost rises directly with battery size, but your cost per mile depends on efficiency (mi/kWh), not on how big the pack is — a bigger battery just buys more range per charge. Using the site defaults of $0.17/kWh and 88% charge efficiency:

On a per-distance basis the picture is steadier. At 3.5 mi/kWh and $0.17/kWh, including losses, home charging works out to about 5.5¢ per mile, or $5.50 per 100 miles. A more efficient EV at 4.0 mi/kWh drops that to about 4.8¢ per mile; a heavier truck or SUV at 2.5 mi/kWh rises to about 7.7¢ per mile. Efficiency, not battery size, is the lever on running cost.

We modeled the three battery sizes above deliberately to make the point: across 60, 75 and 100 kWh packs the full-charge cost varies by more than 60%, yet the cost per mile is identical at $0.055 if the cars share the same 3.5 mi/kWh efficiency. So when a friend with a big-battery EV quotes a scary-sounding charge cost, it tells you almost nothing about how much their car costs to drive — only how far one charge takes them.

Home vs public vs DC fast-charging costs

Where you plug in matters more than almost anything else. Home charging on a standard residential rate is the cheapest option for nearly everyone. Public Level 2 stations are often priced at a premium, and DC fast chargers — the ones that refill 10-80% in roughly 20-40 minutes — typically charge the most, frequently 2-3x the home rate.

*Assumes 3.5 mi/kWh and 88% charge efficiency: 200 miles needs ~57.1 kWh into the battery, ~64.9 kWh from the wall (DC fast losses are somewhat lower, but public pricing more than offsets that).

The takeaway is consistent: do the bulk of your charging at home and treat DC fast charging as a convenience for road trips, not a daily habit. We unpack the trade-offs in detail in home vs public EV charging cost.

What changes your cost (rate plan, time of day, charging losses)

Three factors move your bill more than the rest:

• Your electricity rate. The single biggest variable. US residential rates range from roughly $0.11 to over $0.30/kWh by state and season (EIA). Always check a recent bill rather than trusting a national average.
• Time-of-use plans. Many utilities offer overnight EV rates well below the flat average — sometimes close to half. Since most home charging happens overnight, an off-peak plan can be the easiest way to cut the cost shown here.
• Charging losses. The ~12% lost to AC charging is unavoidable but small. It is why we divide by 0.88 (AFDC) — ignoring it understates your real bill by roughly an eighth.

Battery size and EV efficiency round out the inputs. A larger pack costs proportionally more to fill, while a more efficient car (higher mi/kWh) lowers every per-mile and annual figure. Driving style and climate matter too: cold weather, high-speed highway driving and heavy use of cabin heating all reduce real-world mi/kWh, which nudges every cost figure upward — another reason to enter your own observed efficiency rather than the sticker rating. If you are also wondering how EV charging stacks up against the rest of your home, see what uses the most electricity.

Monthly and annual cost for a typical driver

Here is the calculation as our EV charging cost calculator runs it, using a representative 12,000 miles per year.

• Energy needed: 12,000 mi ÷ 3.5 mi/kWh = 3,429 kWh into the battery.
• Energy from the wall: 3,429 ÷ 0.88 = 3,896 kWh billed by the meter.
• Annual home cost: 3,896 kWh × $0.17 = about $662 per year, or roughly $55 per month.
• Same mileage on public DC fast charging at $0.40/kWh: about $1,558 per year — more than double.

So a typical driver spends on the order of $55 a month to fuel an EV at home — meaningfully less than the $100-plus many pay for gasoline over the same mileage. To put that gas comparison on a level footing, see EV vs gas cost comparison.

Calculate your own EV charging cost → — enter your battery size, charge window, electricity rate and annual mileage to see cost per charge, per mile, and per month, home versus public.

Calculate your charging cost

The fastest way to a number you can trust is to plug in your own figures. You need four things: your usable battery capacity (kWh), the state-of-charge range you typically charge across, your home electricity rate from a recent bill, and your annual mileage. The calculator returns cost per full charge, per top-up session, per mile, and your monthly and annual bill — alongside what the same driving would cost at a public rate.

The bottom line

Charging an EV at home is cheap: about $11.59 for a full 60 kWh charge, roughly $5.50 per 100 miles, and on the order of $55 a month for a typical driver — well under half the per-mile fuel cost of a comparable gas car. Public Level 2 and DC fast charging cost 2-3x more, so the strategy is straightforward: charge at home, on an off-peak rate if you can, and save the fast chargers for road trips.

Run your numbers in the EV charging cost calculator →