Our electric vehicle calculator provides estimated calculations only. These are based on the kWh to KM x price of the specified electric vehicle contrasted against a 2017 Toyota Carolla's average fuel costs. Electricity price is based on the Origin Supply Rate for Citipower - 20.455c (29.645c inc. GST). The petrol price calcualtion is based on a $1.50 per litre pertrol price estimation. The electric vehicle power to kilometer ratio (kWh/100km) has been sourced from www.fueleconomy.gov and GreenVehicleGuide. Any actual savings will vary depending on your car model, fuel consumption, petrol costs and electricity consumption costs. Basic Plan Information Documents are available at our Pricing page.