EV Charging Cost Calculator UK
Estimate home EV charging cost from battery size, percentage added, charging efficiency and your electricity unit rate.
The calculator defaults to 26.11p per kWh, the Ofgem average electricity unit rate for a standard variable tariff paid by Direct Debit from 1 July to 30 September 2026. Your own tariff may be different.
View Ofgem electricity rates →Calculate EV Charging Cost
Your Estimated Running Costs
Usage Summary
Estimated annual use: —
Estimated electricity use per year: —
Estimated grid energy per charge: —
How is EV charging cost calculated?
The calculator works out the energy added to the battery, then adjusts for charging losses to estimate the electricity drawn from the grid.
Frequently Asked Questions
Why include charging efficiency?
Some energy is lost between the wall and the battery. Efficiency lets the calculator estimate how much energy must be drawn from the grid.
Should I use my home tariff or public charging price?
Enter the price you actually pay per kWh for the charging session you want to estimate.
Does this include standing charges or charger installation?
No. It estimates electricity consumed for charging only.
Can I model a partial charge?
Yes. Enter the percentage of the battery you expect to add, such as 40% or 60%.
Other Electricity Cost Calculators
Compare other household appliances using the same electricity rate.