Check your latest utility bill for your exact rate.
Total Charging Cost
$5.40
Adding 36.0 kWh of energy to your battery.
How this calculation works
The formula to determine your home EV charging cost is:
(Battery Capacity × Charge Percentage) × Electricity Rate = Total Cost
For example, charging a 60kWh battery from 20% to 80% requires 36.0kWh of energy. At a local utility rate of $0.15 per kWh, the total cost comes out to$5.40. Note that this calculation represents the pure mathematical energy transfer; real-world costs may be ~10% higher due to normal energy loss during the AC-to-DC conversion process.
Common questions
- Is it cheaper to charge an EV at home or at a public charger?
- Home charging is almost always cheaper. Residential electricity in the US averages roughly 15 cents per kWh, while public DC fast chargers commonly bill 40 to 60 cents per kWh because you are paying for the hardware, the site and the speed. The gap is usually three to four times, which is why this calculator assumes a home rate from your utility bill.
- Why is my real charging cost higher than this estimate?
- This calculator works out the pure energy transferred into the battery. In practice around 10 percent more is drawn from the wall, because converting AC from your house into DC for the battery loses energy as heat, and the car runs pumps and electronics while charging. Add roughly 10 percent to the figure shown for a realistic wall-meter cost.
- Should I charge to 100 percent every time?
- For daily use most manufacturers recommend stopping around 80 percent on lithium-ion packs, because the last stretch is slower and holding a full charge accelerates long-term degradation. Charging to 100 percent before a long trip is fine. That is why this tool lets you set both a start and a target percentage rather than assuming a full charge.