EV Charging Cost Calculator UK

It depends on battery size, the percentage you add, the pence-per-kWh price, and charging losses. A 60 kWh EV charging from 20% to 80% adds 36 kWh to the battery. At 24.67p/kWh and 90% efficiency, it uses about 40 kWh from the grid and costs about £9.87 before any standing charge.

Usually, yes. Home electricity is commonly much cheaper per kWh than public rapid charging, especially if you use an off-peak EV tariff. Public chargers cost more because operators pay for equipment, sites, maintenance, card payments, network operation, and higher VAT.

Pence per kWh is the unit price for electricity. If your tariff is 24.67p/kWh and your car uses 40 kWh from the grid, the electricity cost is 40 x 24.67p, or about £9.87.

For many UK drivers, the cheapest routine is overnight home charging on an off-peak EV tariff. The best option depends on whether you can install a charger, your driving pattern, your supplier, and any day-rate trade-offs.

Convert consumption into grid energy per mile, then multiply by your electricity price. For example, 18 kWh/100km equals about 29.0 kWh/100 miles to the battery. At 90% efficiency the grid supplies about 32.2 kWh, so at 24.67p/kWh the cost is about 7.9p per mile.

Some energy is lost as heat and in battery management during charging. If charging efficiency is 90%, adding 36 kWh to the battery needs 40 kWh from the grid. The lower the efficiency, the higher the real cost.

Rapid and ultra-rapid charging is usually more expensive than home charging because the hardware, grid connections, site leases, and network operation cost more. It is best for longer trips or drivers without reliable home charging.

A full 60 kWh charge at 90% efficiency needs about 66.7 kWh from the grid. At 7p/kWh it costs about £4.67, at 24.67p/kWh about £16.45, at 54p/kWh about £36.00, and at 79p/kWh about £52.67.