EV charging tariffs in Australia

Your tariff is the main cost lever#

A home charger does not reduce the energy your car needs. It only decides how quickly that energy goes in. The cost is set by the price per kWh on your electricity plan, the time you charge, and how much energy the car actually uses.

That makes the tariff a bigger decision than the charger for most households. A 7 kW charger on a good plan can cost less per kilometre than a 22 kW charger on a bad one.

The catch is that electricity plans are not designed around one appliance. A cheap EV window may come with a higher daily supply charge, a sharper peak rate or a contract that is hard to leave. Read the whole offer.

The parts of an electricity plan#

A residential electricity offer usually has four moving parts:

1. Usage rates. The cents per kWh you pay, sometimes split by time of day or season.
2. Daily supply charge. A fixed cents-per-day charge, regardless of how much you use.
3. Feed-in tariff. What you are paid for solar exported to the grid, if applicable.
4. Conditions. Discounts, controlled-load eligibility, demand charges, contract terms and fees.

A plan with a low usage rate but a high supply charge can be worse for a low-use household. A plan with a generous solar feed-in tariff may be better than an EV-specific plan with a cheap overnight rate. The right comparison is the annual total, not the headline number.

Tariff types explained#

“EV tariff” is a marketing label, not a standard product. Two retailers can use the same phrase for very different structures. Ask for the tariff schedule and the full terms.

How to estimate the cost of a charge#

Start with the energy the car needs, not the battery's headline capacity.

1. Decide the percentage you are replenishing. For example, 20% to 80% of a 60 kWh battery is 36 kWh.
2. Add charging losses. AC charging is not perfectly efficient; use roughly 10% as a planning allowance. That turns 36 kWh into about 40 kWh from the grid.
3. Multiply by the rate that applies at the time you charge.
4. Add the share of the daily supply charge if you are comparing whole plans.

At an illustrative 30c/kWh, 40 kWh costs about $12. At an illustrative 10c/kWh, it costs about $4. If that charge covers 300 km, the fuel cost is roughly 4c/km on the first rate and 1.3c/km on the second.

These numbers are examples, not forecasts. Your rates, vehicle efficiency and charging losses will differ. The method is what matters.

Home charging vs public charging#

For most drivers, home charging is the cheapest way to run an EV. The exact gap depends on the tariff and the public network.

These are broad 2026 planning ranges, not a price list. Public charging prices change, and some networks use time-based or session fees. The point is the direction: home charging usually costs less per kWh, especially if you can charge overnight or from solar.

The comparison is not only price. Public fast charging is useful on a road trip, when you cannot charge at home, or when you need a quick top-up. Paying more per kWh can still be the right decision for the trip.

A worked comparison#

Take a car that needs 40 kWh from the grid to cover about 300 km.

• At 30c/kWh at home, the charge costs about $12, or 4c/km.
• At 15c/kWh overnight, it costs about $6, or 2c/km.
• At 60c/kWh on a public DC charger, it costs about $24, or 8c/km.

Those numbers exclude charging losses, subscription fees and idle fees. They show why home charging is the default for daily driving, and public charging is for the trips that need it.

The fine print on EV plans#

The headline window is only the start. Check:

• The exact hours. Include time zone and daylight saving.
• Whether the rate covers the whole home or the EV only. Some offers need a separate meter or charger integration.
• The peak and shoulder rates. Your household still uses power at those times.
• The daily supply charge. A low usage rate can be offset by a higher fixed charge.
• Eligibility. Smart meter, charger model, telemetry, postcode or retailer app.
• Contract length and exit fees. A cheap rate may come with a lock-in.
• The rate after the promotional period. Compare the ongoing price, not just the first offer.
• Solar feed-in terms. Switching for a cheap night rate may reduce a generous export rate.
• Demand charges. A demand tariff can penalise a high charging peak even if the energy rate looks low.

Solar, batteries and timing#

If you have solar, charging in the middle of the day avoids importing power, but it may forgo a feed-in tariff. The value of self-consumption is the avoided import rate, not the feed-in rate. If the export rate is high and the overnight rate is low, exporting solar and charging later can be the better trade.

A battery changes the timing again. Stored solar can charge the car in the evening, but every conversion loses some energy, and the battery may be more valuable supporting the house. Do not size a battery around the car alone. Our solar EV charging guide works through the trade-offs.

How to compare plans without getting burnt#

1. Download 12 months of interval data from your retailer or distributor if you can.
2. Separate your EV charging energy from the rest of the house.
3. Estimate when the car will charge and how many kWh it will need each week.
4. Compare at least three offers on total annual cost, including supply charges.
5. Check the peak rate against your actual evening usage.
6. Read the contract terms and exit fees.
7. Confirm meter and charger eligibility before switching.
8. Use the Australian Energy Regulator's Energy Made Easy comparison service as a starting point, then verify the details with the retailer.

Do not switch on the strength of one advertised rate. A plan that saves $6 a week on charging but adds $3 a week in supply charges and raises the peak rate is not a $6 saving. Run the whole year.

Bottom line#

The best EV tariff is the one that fits your charging pattern and your household's other loads. For most people, that means a simple plan with a genuine overnight window, a reasonable daily supply charge and no ugly peak rate. If the numbers are close, choose the simpler plan and keep the flexibility to switch again.

Straight answers

Questions people ask about this

Is it cheaper to charge an EV at night?

It depends on the tariff. If the overnight window has a lower rate than the times you would otherwise charge, yes. If the plan raises daytime rates or the daily supply charge, the saving may be smaller than the headline rate suggests. Compare the whole bill, not one rate.

What is a time-of-use tariff?

A tariff with different rates for different times of day, usually peak, shoulder and off-peak. It can suit EV owners who can charge in the cheap window, but the peak rate is often higher than a flat tariff, so household usage at those times matters.

Do I need a smart meter for an EV tariff?

Many EV and time-of-use offers rely on a smart meter or interval data. Some also require charger telemetry or a separate meter. Check the retailer's eligibility rules and whether any metering change is included before switching.

Sources and further reading

• Australian Energy Regulator
• Australian Government energy information
• AEMO

External links open in a new tab. We link to primary sources where possible.

Related guides

Independent guide Home EV charging in Australia: the complete guide How home EV charging works, what you need installed, how long it takes and what it costs in Australia. Independent guide Charging an EV with solar in Australia How to use rooftop solar for EV charging, when a battery helps, and the limits of a solar-only setup. Independent guide EV charger rebates and incentives in Australia How to check current EV charger grants, state programs and electricity retailer offers without assuming eligibility.