Some important points to consider:

1. Rate structure: The price per kilowatt-hour (kWh) can vary depending on the charging station and the charge card provider. Some charging stations charge a fixed rate per kWh, while others have variable rates based on the time of day.
   
   

2. Charging speed: Fast charging at special rapid charging stations can be more expensive than slower charging at regular charging points. Fast charging can be convenient if you want to quickly recharge during a long journey, but it may incur higher costs.
   
   

3. Home charging: If you have the option to charge at home, this is usually the cheapest option. You then pay your regular electricity rate per kWh. However, keep in mind that the exact costs vary depending on your energy supplier and the type of electricity rate you have.

On average, charging costs range between €0.20 and €0.40 per kilowatt-hour. An electric car typically consumes between 15 and 25 kWh per 100 kilometers, depending on the model and driving style. So the costs per kilometer are usually between €0.03 and €0.10. However, it is important to note that these figures are only estimates and that actual costs may vary based on the factors mentioned above.