How to find daily kWh on your electricity bill

Most Australian electricity bills report total energy used over the billing period and an average daily figure in kilowatt-hours (kWh). That daily average is the primary input for this calculator.

Where to look

Layouts differ by retailer, but these labels usually get you there: “Average daily usage”, “Daily average”, or a usage chart that quotes kWh per day. If you only have period totals, divide total kWh on the bill by the number of days in that period.

Generation and export for solar households often appear on a separate panel or a second meter summary. You still want the usage / import daily average for the bill fields — export is handled on the solar step.

Why winter and summer separately

Heating, cooling, and daylight hours swing a lot across the year. A single “annual average” can hide peaks that drive battery interest — cold, low-sun winters or hot summers with air-conditioning loads. Entering seasonal averages (even roughly) produces a more defensible mid-point than one cherry-picked month.

If you only have four quarterly bills, group the colder two as winter and the warmer two as summer, or use your highest and lowest recent daily averages. Perfect precision is less important than avoiding a number that only describes your quietest fortnight.

Bills with solar already installed

Retail bills for solar homes typically show energy you import from the grid, not full household consumption before solar. That is useful — it is what you still pay for — but it is lower than gross demand. Our results step can add back estimated self-consumed solar (generation minus export) so the capacity range better reflects total energy the home moves each day. See the solar guide for how that split works.

Common mistakes

• Using dollar totals instead of kWh
• Using a single peak week as if it were every day of the year
• Mixing export figures into the “usage” daily field
• Forgetting multi-tariff bills still add to the same daily kWh total