EV ENERGY COST PLANNER

Make the numbers yours.

Compare annual energy costs and an illustrative AC top-up time. All rates and usage assumptions are editable.

YOUR ANNUAL SCENARIO

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Estimated EV electricity cost

Petrol energy cost—

Energy cost difference—

Wall energy per year—

AC top-up from 20% to 80%—

Energy costs only. A lower energy bill does not establish lower total ownership costs. No finance, depreciation, installation, insurance, servicing, taxes, rebates, parking or session fees are included.

View formulas and calculation limits

Battery energy = annual km × kWh per 100 km ÷ 100.
Wall energy = battery energy ÷ (1 − loss % ÷ 100).
Blended tariff = home share × home price + public share × public price.
EV energy cost = wall energy × blended tariff.
Petrol energy cost = km × litres per 100 km ÷ 100 × petrol price.
AC 20–80% time = usable battery × 0.60 ÷ (1 − loss fraction) ÷ effective AC wall power.

Charging loss is a fraction of wall energy. For simplicity, one loss assumption covers home and public charging. The AC estimate assumes constant effective power, no auxiliary loads or charge taper. It is not a DC fast-charging prediction. Enter an effective power that accounts for the vehicle and equipment limit. No route, vehicle or tariff is automatically verified.