EV Home Charging Cost Calculator
Work out what it costs to charge an electric car at home, per year, per 100 km and per full charge.
Last checked 10/11/2026. Sources: Australian Energy Regulator: The Default Market Offer (tariff caps 2026-27); Essential Services Commission (Victoria): Victorian Default Offer price review 2026-27.
Guide
How the cost is worked out
Energy used = distance ÷ 100 × kWh per 100 km, plus the energy lost in charging. Cost = energy × your usage rate per kWh.
Example. 12,000 km a year at 17 kWh per 100 km is 2,040 kWh. At 33.14c per kWh (the Ausgrid flat-rate Default Market Offer cap) the electricity costs about $676 a year, before charging losses.
Efficiency
Your car’s official efficiency figure is in the manufacturer’s specifications, but real driving, hot or cold weather and speed change it. The default is a typical figure, not data for your car.
Charging losses
Some energy is lost between the wall and the battery. The tool adds 10% by default; this is an editorial rule of thumb and can be changed.
The electricity rate
Pick your network area to start from the AER’s Default Market Offer cap, or enter your own rate. Many retailers have cheaper overnight or time-of-use rates, so enter yours if you charge off-peak.
Common questions
How much does it cost to charge an electric car at home?
It depends on the car and your plan. At 17 kWh per 100 km and 33.14c per kWh, 100 km costs about $5.63 before charging losses.
What does a full charge cost?
Enter the battery size in kWh. A 60 kWh battery charged from empty is about 60 kWh plus losses, roughly $19.88 at 33.14c per kWh without losses.
Is public charging the same?
No. Public chargers set their own prices, often higher than home electricity.
Does this compare with petrol?
No. This tool only works out the electricity cost, as fuel prices change daily.
What next?
- Curious what the rest of the house costs to run? Appliance Running Cost Calculator