How this ev home charging cost calculator works
Battery energy is divided by charging efficiency to estimate energy drawn from the wall. Wall kWh is then multiplied by your electricity rate.
How to use it
- Energy added to battery. Enter the value in kWh.
- Charging loss. Enter the value in %.
- Electricity rate. Enter the value in $/kWh.
- Request the result. Select “Show my result.” No account or email is required.
What to do with the number
Charging losses vary with temperature, charging power, battery conditioning and vehicle efficiency. Use your utility’s time-of-use rate if you normally charge during a specific off-peak window.
Planning estimate
Use this result as a starting point, not a guarantee. Product specifications, site conditions, manufacturer guidance, local codes, taxes, labor, tolerances, and rounding can change the real requirement or cost.
