Home charging vs Supercharger vs petrol
A quick cost calculator for WA Tesla owners. All figures in AUD.
Distance (km)
For a trip or a month
Car
Model 3 RWD (current) – 130 Wh/km
Model 3 Long Range AWD (current) – 143 Wh/km
Model Y Long Range AWD (current) – 156 Wh/km
Model Y RWD (current) – 140 Wh/km
Custom
Efficiency (Wh/km)
Presets are typical estimates from Tesla's official WLTP lab figures. Real-world use is often higher (speed, A/C, weather, charging losses). Your car's trip screen shows your own figure.
Home electricity rate (c/kWh)
Default: Synergy Home Plan A1 flat rate, 33.2621c/kWh inc. GST, effective 1 July 2026. Supply charge not included.
Solar / off-peak rate (c/kWh, optional)
e.g. your Midday Saver off-peak rate, or the export rate you give up when charging from solar. Leave blank to skip.
Supercharger price ($/kWh)
Prices vary by site and time of day. Check the Tesla app for your Supercharger.
Petrol car (L/100km)
Petrol price ($/L)
Check today's WA prices at
FuelWatch
.