Water heater electricity cost in Australia

Electric storage water heating may use a controlled-load tariff, while households without that arrangement pay their normal usage rate.

Rate used for the starting scenarioAUD 0.3314/kWh

Enter the controlled-load rate only when the heater is actually connected to that circuit; otherwise use the applicable general or time-of-use rate.

Billing scopeNew South Wales · Ausgrid

Confidence A 98/100. Effective 2026-07-01 to 2027-06-30.

Check official source ↗

Live local scenario

Calculate with an editable rate.

This planning model treats heating-element runtime as the key variable. Storage losses, inlet-water temperature, tank size, and thermostat settings determine how long the element actually runs.

01

Your scenario

Change any value. Results update instantly.

Active runtime accounts for cycling. Use 100% for devices that draw the rated power continuously.

02

Your reading

Planning range · based on your inputs
Estimated monthly costA$45.24

Likely planning range A$40.71–A$49.76

Per dayA$1.49
Per active hourA$0.99
Per yearA$542.83
Energy / month136.5 kWh

FormulakW × runtime × tariff

Month52 weeks ÷ 12

Data qualitySelf-entered estimate

Transparent method

The local calculation

Water-heating cost = element kW × active heating hours × tariff

The device model stays global. The currency, tariff scope, validity period, and billing cautions come from the Australia data layer.

Read the methodology →

Before trusting the result

Three checks for Australia

01

Separate element runtime from tank standby time.

02

Use the controlled-load rate shown on the bill.

03

Model heat-pump water heaters from measured input rather than resistive-element power.

Turn estimates into evidence

Measured this device in Australia?

The calculator accepts anonymous smart-plug, meter, charger, or utility readings after the result. A real measurement improves the country-device cohort without exposing your name or exact address.

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