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 10/11/2026. Sources: Ofgem: Energy price cap unit rates and standing charges.
Guide
How the cost is worked out
Energy used = distance ÷ 100 × kWh per 100 miles, plus the energy lost in charging. Cost = energy × your unit rate per kWh. Switch to kilometres if you prefer.
Example. 8,000 miles a year at 28 kWh per 100 miles is 2,240 kWh. At 26.32p per kWh the electricity costs about £590 a year, before charging losses.
Efficiency
Your car’s official efficiency figure is in its handbook or on the manufacturer’s site, 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 the Ofgem price cap unit rate for 1 October to 31 December 2026, 26.32p per kWh. If you have an EV tariff with a cheap overnight rate, enter that instead.
Common questions
How much does it cost to charge an electric car at home?
It depends on the car and your tariff. At 28 kWh per 100 miles and 26.32p per kWh, 100 miles costs about £7.37 before charging losses.
What does a full charge cost?
Enter the battery size in kWh. A 60 kWh battery charged from empty is about 60 kWh plus losses, roughly £15.79 at 26.32p 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