ChargeEstimateKit

Home vs Public Charging Cost Calculator

Compare home EV charging cost with public charging cost using your own home rate, public rate, efficiency, and session fee.

Last reviewed: 2026-06-14

Learn how this estimate is calculated

Estimate

kWh
per kWh
per kWh
%

Estimated result

Difference per charge Enter values

Home cost Enter values

Public cost Enter values

Difference over 10 charges Enter values

Difference over 50 charges Enter values

Difference over 100 charges Enter values

Charging prices and charging speeds vary. Use this as a planning estimate.

Formula

cost = energy added / efficiency x price per kWh + fixed fees

Example

A 40 kWh charge at 0.16 per kWh at home can cost much less than the same energy at a 0.48 per kWh public charger, especially when fixed public session fees are added.

Assumptions and limits

  • Example rates are not official current prices.
  • Public charging may include extra time-based, idle, congestion, or membership fees.
  • Compare equivalent all-in rates when budgeting, or treat the result as a rough comparison.

FAQ

Why is public charging often more expensive?

Public charging can include equipment, site, network, maintenance, and convenience costs in addition to electricity.