Free Tool · EV Charging

EV Running Cost Calculator

How Much Could You Save Charging at Home?

Charging an electric car at home on a cheap overnight tariff costs a fraction of filling up with petrol or diesel. Set your mileage and see the difference — then let us fit a dedicated home charger so you can plug in and wake up to a full battery.

Compare against
8,000 mi/yr
The average UK car covers around 7,000–8,000 miles a year.
Advanced — car & tariff details
3.5 mi/kWh
Real-world miles per kWh (3–4 is typical)
7p
Off-peak overnight rate per kWh
90%
Rest is public rapid charging
75p
Typical public rapid rate per kWh
45 mpg
Miles per gallon of the petrol/diesel car
145p
Pump price per litre
8,000 miles/yr · home off-peak charging
Estimated annual saving vs petrol
£0
Around £0 over 5 years
£0
EV running cost / yr
£0
Petrol cost / yr
0p
EV cost per mile
0 t
CO₂ saved / yr
Your yearly motoring cost
£0
Save £0
EV charging cost Saved vs fuel
Fuel you'd spend£0/yr
EV charging cost£0/yr
Electricity used0 kWh/yr
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Estimate only — your real saving depends on your car, tariff and driving. A free survey covers the home charger install.

Got solar or a battery? Charge the car from your own stored energy and the running cost drops even further — try the solar & battery calculator.

What the Estimate Is Based On

Cheap overnight charging

EV tariffs such as Octopus Go or Intelligent give you a few hours of very cheap electricity overnight — often around 7p/kWh. We assume most of your charging happens at home on that rate, with the rest at a typical public rapid price. Adjust both under "Advanced".

Real-world efficiency

We work out the electricity used from your mileage and your car's real-world efficiency (miles per kWh — 3–4 is typical, lower in cold weather). That gives the units you'd actually buy across the year.

A fair fuel comparison

The petrol/diesel cost uses your car's mpg and the pump price per litre (UK imperial gallons). The saving is simply the gap between what you'd spend on fuel and what you'd spend charging — no install price or payback is shown.

Lower carbon too

We also estimate the CO₂ you'd avoid — petrol and diesel emit per litre burned, while EV charging is counted at the average UK grid carbon intensity. Charging from your own solar makes it cleaner still.

This calculator gives a guide estimate for illustration only and is not a quotation. Real savings depend on your car, your tariff and how you drive. We don't show an install price or payback here — book a free survey for a home charger quote tailored to you.
Ready to Charge at Home?

Get a free, no-obligation quote for an OZEV-approved home EV charger — installed across Preston, Lancashire and the North West.

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