☀︎SunTariff

Cost to run a dishwasher in Western Australia (2026–27)

WA reference tariff · 33.3c/kWh

$0.60 per hour at 1,800 W

Typical use (7 loads a week at 1.2 kWh per load) ≈ $145/year on the Western Power (SWIS) rate.

Source: WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1), effective 1 July 2026

Dishwasher cost in WA at 4 h/day, 365 days/year (33.3c/kWh)
Model bandPer hourPer dayPer monthPer year
Efficient (1,200 W)$0.40$1.60$48.54$583
Typical (1,800 W)$0.60$2.39$72.80$874
High (2,400 W)$0.80$3.19$97.07$1,166

The headline annual figure uses this appliance's measured energy per use (1.2 kWh per cycle (normal program)) rather than a constant draw — the table shows constant-draw costs at your chosen hours.

Appliance running-cost calculator

WA

Dishwasher: 1,200–2,400 W typical range.

The energy-label basis is 7 cycles/week; eco programs use 0.5–0.8 kWh, intensive 1.2–1.8 kWh.

$0.60 per hour · $874/year at your settings
Per day (4 h)
$2.39
Per month
$72.80
Per year (365 days)
$874.13

Tariff: 33.3c/kWh — WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1) for the Western Power (SWIS) network, effective 1 July 2026. Wattage basis: EcoFlow AU — dishwasher power consumption. Full dishwasher costs in WA →

The same appliance in other states

Cutting the cost

Run it only when it's full, and use the eco or auto cycle, which washes longer at a lower temperature to save water and heat. Scrape the plates instead of pre-rinsing them under a hot tap. Skip the heated-dry option and crack the door open at the end to let everything air-dry. If your plan has cheaper off-peak hours, use the delay-start to land the cycle in that window.

Frequently asked questions

What does a dishwasher cost per hour in WA?
$0.60 at the typical 1,800 W draw on WA's reference rate of 33.3c/kWh (Western Power (SWIS) network). Efficient models run $0.40, high-draw models $0.80.
How is this calculated?
Watts ÷ 1,000 × the tariff = cost per hour, then × hours × days for the period figures. Every figure on this page uses WA's 2026–27 reference rate — change the assumptions in the calculator above.
Is the tariff here what I actually pay?
It's the WA Government Standard Electricity Prices 2026–27 (Synergy Home Plan A1) usage rate for the Western Power (SWIS) network — the government reference. Your market offer may be a little under it; your zone may differ. See WA rates by zone.

Related

Sources — figures current as at 17 July 2026.

The energy-label basis is 7 cycles/week; eco programs use 0.5–0.8 kWh, intensive 1.2–1.8 kWh.