EV home charging cost calculator
At the price cap of 26.32p per kWh, charging at home costs about 9p a mile. On a 7p EV tariff it’s about 2.4p.
- Cost per mile
- 9p
- Cost a year
- £633.32
- Full charge (0–100%)
- £17.37
- Electricity for this charge
- 39.6 kWh
- Electricity a year
- 2,406 kWh
60 kWh battery charged from 20% to 80% at 26.32p per kWh, with 10% lost in charging. About 192 miles on a full battery.
Home charging only. Public rapid chargers cost several times more per kWh.
Cost per 100 miles at different rates
At 3.2 miles per kWh with 10% charging losses.
| Electricity rate | Per mile | Per 100 miles |
|---|---|---|
| 7p per kWh (typical EV tariff) | 2.4p | £2.41 |
| 10p per kWh | 3.4p | £3.44 |
| 15p per kWh | 5.2p | £5.16 |
| 20p per kWh | 6.9p | £6.88 |
| 26.32p per kWh (price cap) | 9p | £9.05 |
How we calculate this
We work out how much energy goes into the battery, add the energy lost while charging, and multiply by your rate. Cost per mile divides the rate by your car’s efficiency.
Which? found an average of 3.18 miles per kWh across the electric cars it tested, and one car needed 88 kWh from the wall to fill a 77 kWh battery. We use 10% losses as a typical figure.
Questions people ask
How much does it cost to charge an electric car at home?
On the price cap, about 9p a mile, or £17.37 to fully charge a 60 kWh battery. On a cheaper overnight EV tariff, it’s a fraction of that.
Is an EV tariff worth it?
Usually, if you charge at home overnight. At around 7p per kWh instead of 26.32p, charging costs about a quarter as much. Check the daytime rate too, as it can be higher than the price cap.
Why charge to 80% rather than 100%?
Many manufacturers suggest 80% for everyday charging to help look after the battery, and charging slows down near full. Check your car’s handbook.
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