1. Calculating Home Charging Costs
Home charging is a convenient and economical way to keep your EV battery in working condition. To calculate costs, you will need the following information:
- Battery capacity of your EV (kWh): Find out how much energy is required for a full charge.
- Current electricity price (per 1 kWh): This information can be found on your electricity bill.
Calculation formula:
Charging cost (€) = Battery capacity (kWh) × Electricity price (per 1 kWh)
Example:
If your EV battery capacity is 50 kWh and the electricity price is 0.15 €/kWh, then:
50 kWh × 0.15 € = 7.50 €
A full charge will cost 7.50 €.
2. Calculating Public Charging Costs
At public charging stations, costs may be higher due to additional services such as fast charging or convenient locations. To calculate costs, consider the following:
- Price per kWh at the station: This can vary depending on the operator.
- Charging speed: Fast charging may be more expensive.
- Additional fees: Some stations charge a connection or session fee.
Calculation formula:
Charging cost (€) = Power consumed (kWh) × Price per kWh
Example:
If you charge 30 kWh at a station with a rate of 0.30 €/kWh, then:
30 kWh × 0.30 € = 9.00 €
The charge will cost 9.00 €.
3. Factors Influencing Charging Costs
- Charging efficiency: Some energy is lost during charging. For example, efficiency at some stations might be around 90%.
- Electricity rates: Home charging at night can be cheaper due to off-peak tariffs.
- Type of charging station: Fast charging (DC) is usually more expensive than slow charging (AC).
- Station location: Popular or remote locations may have higher rates.
4. Comparison of Home and Public Charging
| Parameter | Home Charging | Public Charging |
|---|---|---|
| Cost per kWh | Low (0.10–0.20 €) | Higher (0.20–0.50 €) |
| Convenience | Maximum | Depends on location |
| Charging speed | Slow (up to 22 kW) | Fast (up to 350 kW) |
| Additional fees | None | Possible |
5. How to Reduce Charging Costs
- Use off-peak rates: Many electricity providers offer reduced rates at night.
- Optimize routes: Plan trips to use stations with lower rates.
- Install solar panels: Home charging from solar energy can significantly reduce costs.
- Compare operator rates: Use apps to find stations with the best prices.
Conclusion
Calculating EV charging costs is straightforward when considering key parameters: battery capacity, electricity rates, and charging efficiency. Home charging is often more economical, especially with off-peak rates. SIA Stars MB offers charging stations and solutions for homes and businesses. Visit our website at 4ecars.eu to find the best devices for charging your electric vehicle.