EV Charging Cost Calculator
Estimate your annual EV charging costs split between home and public chargers. Adjust the tariff rates and home/public split to match your driving habits.
Frequently asked questions
How much does it cost to charge an electric car at home?
At the current Ofgem price cap of around 24p per kWh, a typical EV with 3.5 miles per kWh efficiency costs about 6.9p per mile to charge at home. For 10,000 miles per year, that is roughly £690 — significantly cheaper than petrol or diesel.
How much does public charging cost?
Public rapid chargers (50kW+) typically charge 65-79p per kWh in the UK as of 2026. Some networks like Tesla Superchargers or Ionity with subscriptions can be cheaper. Slow destination chargers at supermarkets or car parks are sometimes free or around 30-40p per kWh.
What is a good miles per kWh figure?
Most modern EVs achieve 3-4 miles per kWh in real-world driving. Smaller, lighter EVs like the MG4 can exceed 4 miles per kWh, while large SUVs like the BMW iX may achieve 2.5-3 miles per kWh. Cold weather, motorway speeds, and heavy loads reduce efficiency.
Should I get an EV-specific energy tariff?
Yes, if you charge mainly at home. EV tariffs like Octopus Go or Intelligent Octopus offer off-peak rates as low as 7-9p per kWh during overnight hours. This can cut your home charging costs by 60-70% compared to standard tariffs.
How many kWh does an EV use per year?
At 10,000 miles per year and 3.5 miles per kWh efficiency, an EV uses roughly 2,860 kWh per year — adding approximately £685 to your electricity bill at standard rates, or much less on an EV tariff.
These calculations are estimates based on 2026/27 HMRC and DVLA rates. Speak to a lender or qualified financial adviser for a personalised quote.