How to Calculate Electric Vehicle Charging Costs? Petrol vs Electric

With the widespread adoption of electric vehicles, one of the most frequently asked questions by drivers is how much electricity is consumed per 100 kilometers and how this reflects on their budget. Charging costs vary depending on whether the vehicle is charged at home or at commercial fast-charging (DC) stations.

Calculating Home Charging Costs

An average electric vehicle consumes approximately 15–20 kWh (kilowatt-hours) of electricity per 100 kilometers. A simple calculation can be made based on the residential electricity unit price:

• Formula: 100 Km Consumption (kWh) × Electricity Unit Price
• Example: 18 kWh × Current Home Tariff = The cost per 100 km turns out to be significantly more affordable compared to petrol vehicles.

Fast Charging (DC) Station Costs

At public DC fast-charging stations, per-kWh rates are higher than home tariffs due to infrastructure and investment costs. Nevertheless, the total driving cost generally remains more advantageous compared to fossil-fuel vehicles.

Ways to Reduce Charging Costs

Whenever possible, completing the charging process at home during off-peak night hours and keeping the battery between 20% and 80% to reduce reliance on public fast charging is the most economical method.

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