What's a normal power bill for your household size? (Australia)
Regulator benchmark data puts a typical 4-person east-coast home at roughly $2,850 a year for electricity — about $700 a quarter. Here are the numbers by household size, and how to tell if yours is high.
The hardest thing about an electricity bill is that it arrives with no context. $780 for the quarter — is that bad? Normal? You can’t tell from the bill, and that’s exactly the number you need before deciding whether anything is worth fixing.
Here’s the context, from the regulator’s own household benchmarks.
Typical annual electricity use by household size
These are average figures for a temperate east-coast home (think Sydney, Adelaide, Perth), from the AER’s residential consumption benchmarks. Dollars use a typical market-offer rate of about 33c/kWh plus a daily supply charge:
| People in the home | Electricity used | Cost per year | Per quarter |
|---|---|---|---|
| 1 | ~3,100 kWh | ~$1,480 | ~$370 |
| 2 | ~5,200 kWh | ~$2,180 | ~$550 |
| 3 | ~6,400 kWh | ~$2,560 | ~$640 |
| 4 | ~7,300 kWh | ~$2,870 | ~$720 |
| 5+ | ~9,000 kWh | ~$3,430 | ~$860 |
Notice the shape: the bill doesn’t double when the household does. The jump from living alone to two people is big; each person after that adds less, because the fridge, and much of the heating and lighting, are shared.
Average is not the target
Before you relax because you’re “about average” — average just means typical, and the typical Australian home leaves real money on the table.
We model an efficient home for the same comparison: a well-set-up, all-electric family home — decent insulation, reverse-cycle heating, heat-pump hot water, LED lighting, efficient appliances. Nothing exotic, no solar required. For a 4-person home in the temperate zone, that home uses about 4,900 kWh a year — around $2,080, against the $2,870 average above.
That’s roughly $790 a year between “average” and “sorted” — every year, before any rate shopping. Across household sizes and climates, an efficient full-sized home typically lands 30–40% below the average. So the table tells you if something’s wrong; the efficient line tells you what’s possible.
(One honesty note: that efficient figure is a full-sized all-electric house. Small households in the average column include lots of apartments, so their gap to “efficient” is smaller than it looks — another reason a table can’t be the final word.)
Four reasons your number can sit above the table — and still be fine
Climate. The table is the temperate zone. Hot-zone homes (Brisbane, Darwin, Cairns) run higher on summer cooling — a 4-person hot-zone average is closer to 9,000 kWh. Cool-zone homes (Melbourne, Canberra, Hobart) run higher again on electric heating, around 9,500 kWh for four people.
Season. A winter bill is not an average bill. In the temperate zone the winter quarter runs about 20% above the yearly average; in cool zones about 34% above. Comparing July’s bill against the table’s per-quarter column will make almost everyone look bad — compare a full year if you can.
Gas. These are electricity-only figures. A gas home shows less on this bill and has a second one; an all-electric home does everything on this bill and should sit higher.
Solar. Panels shrink the bill without shrinking the usage. A small dollar figure on a solar home can hide a lot of consumption — which still costs you, because every kilowatt-hour you avoid using is either a kilowatt-hour bought back later or one exported for a much smaller credit.
The proper way to check
Those four caveats are why a table can only take you so far — and why we built a free tool that does the comparison properly. It takes your actual bill, adjusts for your climate, household size, gas, solar and the season the bill covers, and shows where you sit against an average home and an efficient one — then tells you whether your problem is the rate you’re paying or the amount you’re using, because the fix for each is different.
If it turns out you’re on the high side, that’s genuinely good news: it means there’s money on the table, and the guide prices every way to claim it — what each fix saves, what it costs, and how fast it pays back.
Consumption benchmarks: AER (Frontier Economics) residential electricity consumption benchmarks, by household size and climate zone. The efficient-home figure is Decode Energy’s bottom-up model of a good-standard all-electric home (7-star-level thermal performance, reverse-cycle heating, heat-pump hot water, LED lighting, efficient appliances) — the same line the free comparison tool uses. Costs use a typical 33c/kWh usage rate and $1.25/day supply charge; your retailer’s rates will differ — check your bill.