EV Home Charging Cost Calculator — Monthly Cost 2026
Calculate your EV home charging cost per month and per mile in 2026. Compare home charging rates vs public fast chargers.
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How to use this calculator
- Enter your EV battery size in kWh (find in your vehicle's specs).
- Enter how often you charge to full per week on average.
- Enter your home electricity rate in $/kWh.
- Enter your EV's efficiency in miles per kWh.
- See monthly cost, annual cost and cost per mile instantly.
Understanding your results
How home charging cost is calculated: Monthly cost = (battery size × charges per week × 4.33 weeks) × electricity rate. At 75 kWh, 2 charges/week, and $0.163/kWh national average, that is 75 × 2 × 4.33 × 0.163 = $97/month. Compare this to gasoline: driving the same distance at 30 mpg and $3.48/gallon costs $193/month — a $96/month saving.
Cost per mile is the most useful metric: Gasoline averages $0.11–0.14/mile at current prices. Home EV charging averages $0.03–0.06/mile at national average rates. In high-electricity states like Hawaii ($0.39/kWh), home charging costs $0.11/mile — matching gasoline. In low-rate states like Louisiana ($0.09/kWh), home charging costs under $0.03/mile.
Time-of-use rates can cut EV charging costs by 30–50%: Many utilities offer off-peak rates of $0.06–0.09/kWh overnight. Setting your EV to charge between 9pm and 6am at these rates dramatically reduces monthly costs. Utilities with strong TOU programs include PG&E (California), ConEd (New York), and Duke Energy (Southeast).
Public charging comparison: DC fast charging networks (Tesla Supercharger, Electrify America) average $0.28–0.45/kWh in 2026 — 2–4× higher than home rates. For 80% home charging and 20% public charging, effective average cost rises to $0.06–0.09/mile. Drivers who rely primarily on public charging lose most of the fuel cost advantage over gasoline.