EV Charging Cost: 100 Miles, Tesla Model 3 Efficiency
Calculate the electricity cost to charge a Tesla Model 3 for 100 miles at 4 mi/kWh and $0.15/kWh.
How to use this tool
- Enter the distance you want to charge for, in miles.
- Enter your EV's efficiency in miles per kWh (from its trip computer).
- Enter the electricity rate at the charger, in dollars per kWh.
- Set the charging efficiency (about 0.90 for home Level 2).
- Read the grid energy used and the charging cost.
Find out how much it costs to charge a typical EV like the Tesla Model 3 for 100 miles of driving at a home rate of $0.15/kWh.
Frequently asked questions
- How much does it cost to charge an EV at home?
- For a typical EV at 4 mi/kWh, 90% charging efficiency, and $0.15/kWh, about 100 miles of range costs roughly $4. Overnight off-peak rates make it cheaper; public DC fast charging at $0.30–0.50/kWh costs several times more.
- Why is grid energy higher than battery energy?
- Charging isn't perfectly efficient. Some energy is lost as heat in the onboard charger, cables, and AC-to-DC conversion, so you draw more from the grid than ends up stored — usually 5–15% more.
- Does cold weather increase charging cost?
- Yes. Cold reduces driving efficiency (more kWh per mile) and adds battery-conditioning and cabin-heating loads, so the same trip needs more energy. Lower the mi/kWh input to reflect winter driving.