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How much does it cost to charge an EV?

When you charge an electric car at home or at a public charging station, the cost can vary depending on the time of day, the tariff or charging network used, battery size and how much energy you need. 

At the time of writing this (August 2022) the average UK electricity price is approximately 22.36p per kWh* and an EV will typically travel about 4 miles per kWh, so to travel 100 miles would cost around £5.50 or 5.5p per mile. 

You can calculate the cost to fully charge your EV by using the following calculation: Tariff (e.g. 22.36p/kWh) * Battery size (e.g. 100kWh) / 100 = Cost to fully charge (e.g. £22.36). 

Using the Subaru Solterra as an example it would cost you circa £16 for a full charge (28p/kWh * 71.4kWh / 100 = £15.97). But, charging at home overnight when your energy tariff is off-peak will be cheaper. You could also investigate switching to an electricity tariff designed specifically for EV drivers for even more cost savings. 

Some public charging points at supermarkets or car parks for example are often free to use for the duration of your stay. However, most public chargers and rapid chargers will come with a tariff (typically more expensive) and will vary depending on where you charge and the supplier they use.

*Source https://www.ofgem.gov.uk/energy-price-cap

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