EV Home Charging Cost Calculator
Work out what it costs to charge an electric car at home, per year, per 100 miles and per full charge.
Last checked 11/10/2026. Sources: U.S. Energy Information Administration: Electric Power Monthly, Table 5.6.A.
Guide
How the cost is worked out
Energy used = distance ÷ 100 × kWh per 100 miles, plus the energy lost in charging. Cost = energy × your electricity rate per kWh.
Example. 8,000 miles a year at 28 kWh per 100 miles is 2,240 kWh. At 18 cents per kWh the electricity costs about $403 a year, before charging losses.
Efficiency
The efficiency in kWh per 100 miles is on the EPA fuel economy label for your car, and it is an official figure for that model, but real driving, cold weather and speed change it. The default is a typical figure, not data for your car.
Charging losses
Some energy is lost between the wall and the battery. The tool adds 10% by default; this is an editorial rule of thumb and can be changed.
The electricity rate
The default is your state’s average residential price (EIA, August 2026). If you charge overnight on a time-of-use plan, enter that rate instead.
Common questions
How much does it cost to charge an electric car at home?
It depends on the car and your rate. At 28 kWh per 100 miles and 18 cents per kWh, 100 miles costs about $5.04 before charging losses.
What does a full charge cost?
Enter the battery size in kWh. A 60 kWh battery charged from empty to full is about 60 kWh plus losses, so roughly $10.80 at 18 cents per kWh without losses.
Is public charging the same?
No. Public chargers set their own prices, often higher than home electricity.
Does this compare with petrol?
No. This tool only works out the electricity cost, as fuel prices change daily.
What next?
- Curious what the rest of the house costs to run? Appliance Running Cost Calculator