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EV Home Charging Cost Calculator Australia

Estimate annual and monthly EV charging cost in AUD using kilometres, Australian label energy consumption, charging losses and home/public rates.

LIFESTYLE & HOME

Estimate electric-vehicle charging energy and cost from kilometres travelled and the model-specific Wh/km or kWh/100 km figure on the Australian energy consumption label.

Split charging between home and public networks, use your actual plan rates, and include an explicit charging-loss assumption so grid energy is not confused with battery energy.

Disclaimer: Laboratory label consumption and real-world use differ with speed, weather, tyres, payload, heating or cooling and driving style. Public charging prices and idle fees vary by network.
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Calculator information

How to use this calculator

  1. Enter annual kilometres and the vehicle label consumption in kWh/100 km.
  2. Set the share charged at home versus public chargers.
  3. Enter current home and public charging rates.
  4. Adjust charging loss if you have measured wall-to-battery energy.

EV charging cost

Grid kWh = (km × kWh/100 km ÷ 100) ÷ (1 − loss%); cost = home kWh × home rate + public kWh × public rate
  • The result includes charging loss but not charger installation, subscriptions, parking or idle fees.

Worked example: 15,000 km per year

Given:
  • 18 kWh/100 km label consumption
  • 10% charging loss
  • 80% home at $0.35/kWh
  • 20% public at $0.60/kWh
Steps:
  1. Battery energy: 2,700 kWh
  2. Grid energy: 3,000 kWh
  3. Blended energy cost: $0.40/kWh

Result: Estimated charging cost: $1,200/year or $100/month.

Frequently asked questions

Where do I find kWh per 100 km?
Convert the Australian label Wh/km figure by dividing by 10, or use the manufacturer combined energy consumption figure.
Does this include charger installation?
No. It estimates energy only. Electrical upgrades, equipment, subscriptions and parking fees are separate.
Why include charging loss?
The wall supplies more energy than reaches the battery because the charger, battery conditioning and electronics consume some energy.

Last updated: 13 July 2026

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