How much does it cost to charge your electrical vehicle at home?

Charging your electric vehicle at home can be simple and affordable. Your charging cost depends on how much electricity your car uses and what your electricity retailer charges per kilowatt-hour (kWh).

For example, if your electricity rate is 30 cents per kWh:

  • 20 kWh of electricity costs $6
  • 50 kWh costs $15
  • 75 kWh costs $22.50

These figures are examples only. Your actual cost will depend on your electricity plan, the amount of energy used and charging losses.

How to calculate your EV charging cost

You only need two numbers to estimate the cost of a charge:

  1. Your vehicle’s battery capacity in kilowatt-hours (kWh).
  2. Your electricity rate in cents per kWh.


The calculation:

Battery capacity × electricity rate = estimated charging cost.

For example, charging a 60 kWh battery at 30 cents per kWh would cost $18 for a full charge, before allowing for charging losses.

You don’t need to charge from empty to full every time. To estimate the cost of your usual charging session, use the amount of electricity you expect to add rather than the full battery capacity.

What affects the cost of charging your electric car?

Your electricity rate

Your electricity plan has the biggest influence on what you pay. Some plans offer cheaper off-peak rates overnight, while others charge different rates throughout the day.

If you have solar, charging during the day may also help reduce the amount of electricity you buy from the grid.

Your vehicle

Different electric vehicles use different amounts of energy. Battery size affects the cost of a full charge, while your vehicle’s efficiency and the distance you drive affect your ongoing running costs.

Check your vehicle handbook or manufacturer’s website for the most accurate specifications.

Your charging setup

You can charge some electric vehicles using a suitable standard power point, while a dedicated home EV charger offers faster charging.

The right option depends on how far you drive, how long your car is parked at home and your property’s electrical capacity. A dedicated charger may also require switchboard or supply upgrades.

Is home EV charging cheaper than public charging?

Home charging is generally cheaper than using public charging stations, particularly when you can take advantage of an off-peak electricity rate or your own solar generation.

Public charging prices vary by provider, location and charger type. If you regularly travel longer distances, you’ll likely use a combination of home and public charging.

Need help choosing a home EV charger?

You don’t need to overcomplicate it. The right setup comes down to your vehicle, your daily driving and the electrical capacity of your home.

Luno Electrical installs home EV charging systems across Melbourne. As a Tesla Certified Installer, we can help you understand your options, work out what your home needs and make sure the installation is completed properly.

We keep you informed throughout the job, take care of your home and back our workmanship with a lifetime workmanship warranty.

Get in touch to talk through your home charging options.