How much does it cost to charge an EV at home?
By Sithum Imarsha Last reviewed
With these settings, a Tesla Model Y 2025 AWD 600 km costs about $1.11 per 100 km and $140 a year to charge. That is $3,181 a year less than an average petrol car.
Your result
Yearly saving vs petrol
$3,181a year
$3,321.68 petrol − $140.24 EV, at 12,600 km
At these numbers the EV costs — a year more than petrol.
- EV per 100 km
- $1.11
- Petrol per 100 km
- $26.36
- EV a year
- $140
- Petrol a year
- $3,322
- Blended electricity rate
- 7c/kWh · 15.9 kWh/100 km
NSW road user charge. NSW will charge EVs 3.095c per km (the 2026-27 rate, indexed yearly) from 1 July 2027, or sooner if EVs reach 30% of new vehicle sales. At your km that is about — a year. Saving after it: —.
Free midday power. —
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How we calculated this
- The energy the car uses over a set distance comes from its Green Vehicle Guide figure.
- Each share of charging is priced at its own rate: home, an EV night plan, public fast chargers and your own solar.
- The petrol car is priced from its fuel use and the price per litre. The yearly saving is the gap between the two.
Full method, tables and sources: EV charging cost vs petrol calculator
| Way of charging | Rate | Per 100 km |
|---|---|---|
| Home, normal rate | 32c/kWh | $5.09 |
| Home, EV night plan | 7c/kWh | $1.11 |
| Public DC fast (no loss added) | 70c/kWh | $11.13 |
| Solar (feed-in given up) | 5c/kWh | $0.80 |
| Petrol car, per litre | $2.375 | $26.36 |
Find the energy per 100 km
15.9 kWh per 100 km, 15.9 kWh from the wall on AC
Blend the electricity rates
7c/kWh
EV cost per 100 km
15.9 kWh × 7c/kWh = $1.11
Petrol cost per 100 km
11.1 L × $2.375 = $26.36
A year of driving
$3,321.68 − $140.24 = $3,181.44
This version starts with all charging at home on an EV night plan, at 7c/kWh. Move some of it to your normal rate, or to solar and free midday hours, to see how the cost changes.
Home charging: what to know
Official source
- EV night plans we checked: OVO The EV Plan 4.5c/kWh and EnergyAustralia EV Night Boost 7c/kWh (NSW, Ausgrid network), both 12am to 6am. Rates are variable and can change with notice.
- Free midday power: the Solar Sharer Offer in NSW (11am to 2pm), south-east Queensland (11am to 2pm) and SA (12pm to 3pm) from 1 July 2026, and Victoria's Midday Power Saver (11am to 2pm) from 1 October 2026. It only helps if the car is home at midday.
Solar is not free: each kWh you put in the car is a kWh you do not export, so it costs the feed-in tariff you give up.
| Plan | Night rate | Where | Per 100 km | A year |
|---|---|---|---|---|
| OVO The EV Plan | 4.5c/kWh | VIC, NSW, QLD, SA (networks vary) | $0.72 | $90 |
| Engie EV Night Saver | 6c/kWh | VIC, SA, NSW, WA, QLD (states not confirmed) | $0.95 | $120 |
| EnergyAustralia EV Night Boost | 7c/kWh | NSW, Ausgrid network | $1.11 | $140 |
| AGL Night Saver EV | 8c/kWh | NSW, VIC, QLD, SA, WA | $1.27 | $160 |
| Normal rate, no plan | 32c/kWh | Our average of the state rates | $5.09 | $641 |
- Against the normal rate ($641 a year at 32c/kWh), the night plans take $481 (AGL Night Saver EV) to $551 (OVO The EV Plan) off a year of charging, if every charge is in the plan's night hours.
- If only half of the charging is in the night hours and the rest is at the normal rate, a year on EnergyAustralia EV Night Boost at 7c/kWh costs $391, not $140.
Each row is the calculator on this page for a Tesla Model Y 2025 AWD 600 km, 12,600 km a year (Official source), with every charge at that row's rate. Every plan's night rate runs 12am to 6am. Plan rates were read on 23 September 2026 and can change (Official source, Dated third-party source for Engie EV Night Saver). The normal rate is our plain average of the state default rates, 32c/kWh. The state rates are: Dated third-party source, except Western Australia (Official source). A cheap night rate can come with dearer rates at other hours, so compare the whole plan.
How much charging do the cheap night hours give?
What a night of charging delivers
Power of two home chargers: 1.84 kW for a 10 A power point (8 A cable), 7.36 kW for a 7 kW wall charger.
Source: Worked out as 230 V × 8 A. SolarQuotes measured portable chargers drawing about 8 A on a 10 A point; Worked out as 230 V × 32 A, single phase (Estimate). Checked 30 September 2026.
In the 6 night hours of these plans (12am to 6am) that is about 11 kWh from the power point and 44 kWh from the wall charger. A year of 12,600 km in the Tesla Model Y 2025 AWD 600 km needs about 5.5 kWh a day, so either one delivers an average day's driving in the night hours. A bigger top-up does not: from 20% to 80% takes about 28 h 51 min on the power point, so some of it lands outside the night hours. Times for every car and charger: the EV charging time calculator.
Why we never add charging loss to an official figure, and how solar and free midday hours are priced: read the guide on the main EV charging cost calculator.
Questions
What does a year of home charging cost?
For a Tesla Model Y 2025 AWD 600 km driven 12,600 km a year: $140 on an EV night plan at 7c/kWh, if every charge is in the plan's night hours, or $641 at our average home rate of 32c/kWh.
Which EV night plan is cheapest?
Of the 4 EV night plans we checked on 23 September 2026, OVO The EV Plan has the lowest night rate: 4.5c a kWh, 12am to 6am. AGL Night Saver EV has the highest: 8c. Rates are variable and can change. A cheap night window can come with dearer rates at other hours, so compare the whole plan.
Is charging from my own solar free?
No. Each kWh that goes into the car is a kWh you do not export, so it costs the feed-in tariff you give up: 5c/kWh in our default. For the Tesla Model Y 2025 AWD 600 km that is about $0.80 per 100 km, against $5.09 at our average home rate.