It is hard to figure out the exact charging cost of an electric car. You have to calculate quite a complex number to get a real idea of the charging cost of an electric vehicle. Here we are explaining how to work it out.

Figure out the pence per kWh

While calculating the cost of charging an electric car, first of all, you have to consider the pence per kilowatt-hour (kWh) likewise pence per liter for a traditional fuel car. It will help you to identify the electricity costs used to fill up your vehicle. The energy supplier will use kWh as a standard measurement to bill you. For example, if you utilize 1,000 watts of electricity for 1 hour, you have to pay for this. Usually, our home electricity bills are calculated in this way. On average the home electricity bill stays between 10-14 pence.  If the petrol is 128p per liter, the electricity bill will be between 10-14 pence per kWh.

Charging
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Identifying the size of the battery

The next step is to consider the size of the battery which indicates the measurement of capacity. If you compare it with a petrol car, we can understand it easily. If a petrol car has a 40-liter tank, the cost to fill it up is £51.20. Because per liter petrol rate is £1.28. Similarly, the size of the battery of an electric car indicates how many kWh of energy it can store. The larger the capacity the bigger the charging cost. The Tesla model s 100d is the largest battery size currently available in the market. The cost to the charge of this 100-size battery would be £10.00 assuming the price per kWh is 10 pence.

Electric car
Credit: ey
Calculating per mile cost

Furthermore, the cost to charge for Nissan Leaf 30 size battery at 10 pence per kWh would be £3.00 while it is £0.70 for BMW i8 battery size 7 and £0.70for Mitsubishi Outlander battery size 12 would be £1.20.

cost of charging
Credit: euronews

Till now we have calculated the pence per mile cost. If we want to identify the cost per mile, we have to divide the cost by distance. If the real-life range is 120 miles for Nissan Leaf 30kWh, the cost per mile would be £0.025 for this particular model.