Watts & Bills
What electricity costs in Western Australia
No competition, and no shopping around.
33.26c/kWh
119.24c/day
$435a year
+19%
No competition, and no shopping around
Western Australia runs its own grid, the South West Interconnected System, and it is not part of the National Electricity Market. For households that has one blunt consequence: there is no retail competition. Synergy is the only option, its Home Plan A1 tariff is set by the state government, and no amount of comparing will find you a better rate. Everything on this page is therefore the price, not a benchmark to beat. What is left under your control is how much you use and when - and because there is no public wholesale feed for this grid, the live prices elsewhere on this site do not cover WA.
What each appliance costs in WA
| Appliance | Each use | A year here | Cheapest state |
|---|---|---|---|
| Charging an electric car at home7kW wallbox taking a battery from near-empty to full | $13.97 | $1,397 | $1,174Tasmania |
| Electric storage hot water systemFamily-sized tank heating on a controlled-load tariff | $3.11 | $1,136 | $955Tasmania |
| Ducted reverse-cycle air conditioningWhole-house ducted system on a hot summer day | $11.18 | $1,006 | $845Tasmania |
| Swimming pool pumpSingle-speed filtration pump on a daily timer | $2.56 | $935 | $786Tasmania |
| Electric column heaterPortable oil column heater on full in one room | $3.99 | $399 | $335Tasmania |
| Outdoor spaHeater and pump keeping a four-seater spa warm | $2.66 | $399 | $335Tasmania |
| Split-system air conditionerOne 2.5kW-cooling bedroom or living-room unit | $2.26 | $271 | $228Tasmania |
| Second fridge in the garageOlder beer fridge working harder in an unairconditioned garage | 60c | $219 | $184Tasmania |
| DishwasherNormal cycle with internal water heating | 70c | $210 | $176Tasmania |
| Vented clothes dryerStandard vented dryer, one full load | $1.20 | $180 | $151Tasmania |
| Fridge-freezerAverage draw of a 400L fridge-freezer over a full day | 46c | $169 | $142Tasmania |
| Gaming PCMid-to-high-end desktop under load plus monitor | 53c | $160 | $134Tasmania |
| Electric ovenStandard 60cm oven at roasting temperature | 80c | $120 | $101Tasmania |
| Heat-pump clothes dryerCondenser heat-pump dryer, one full load | 67c | $100 | $84Tasmania |
| Washing machineFront loader on a warm wash | 30c | $84 | $70Tasmania |
| Television55-inch LED set, five hours of viewing | 17c | $61 | $51Tasmania |
| Electric kettleBoiling enough for two mugs, three minutes | 4c | $58 | $49Tasmania |
| Air fryerMid-sized basket air fryer, 20 minutes | 16c | $33 | $28Tasmania |
| Electric blanketDouble-bed underblanket on a medium setting | 24c | $29 | $24Tasmania |
| Ceiling fanStandard four-blade fan on medium | 19c | $28 | $23Tasmania |
Worth reading next
Sources
- AER - Default Market Offer 2026-27 final determination
- Reference plan rates by state, 2026-27
- Appliance wattages are typical mid-range values for common Australian models. The label on your own unit beats our figure.
Reference prices last checked 2026-10-26. New regulated prices apply from 1 July each year. Spotted something wrong?Tell us — corrections go out the same week.