What could electric
cost you to run?
Change the assumptions to explore your own energy comparison. All amounts are Australian dollars. Defaults are an illustrative scenario, not price quotes.
Enter valid numbers within each field’s limits to see results.
What’s in the calculation?
EV consumption is battery-side energy use. Charging loss is the share of electricity taken from the grid that does not reach the battery. Set loss to zero if your consumption figure already includes it.
Home share is a share of charging energy, not a count of charging sessions. Public rates can include separate session, parking or idle fees; these are excluded.
Show formulas and limits
Blended tariff = home share × home rate + public share × public rate.
Wall energy = annual km × consumption ÷ 100 ÷ (1 − loss fraction).
EV cost = wall energy × blended tariff.
Petrol cost = annual km × L/100 km ÷ 100 × $/L.
Difference = petrol cost − EV cost.
Purchase costs, finance, insurance, maintenance, depreciation, taxes and charger installation are excluded. Solar has an opportunity cost; enter the rate appropriate to you. A positive difference is an energy saving; a negative difference means EV energy costs more under your inputs.