☀︎SunTariff

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

WA reference tariff · 33.3c/kWh

$0.43 per hour at 1,300 W

Typical use (0.25 h/day, 365 days a year at 1,300 W) ≈ $39/year on the Western Power (SWIS) rate.

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

Microwave cost in WA at 0.25 h/day, 365 days/year (33.3c/kWh)
Model bandPer hourPer dayPer monthPer year
Efficient (1,000 W)$0.33$0.08$2.53$30
Typical (1,300 W)$0.43$0.11$3.29$39
High (1,700 W)$0.57$0.14$4.30$52

Appliance running-cost calculator

WA

Microwave: 1,000–1,700 W typical range.

10–15 min/day of actual heating in a typical household.

$0.43 per hour · $39/year at your settings
Per day (0.25 h)
$0.11
Per month
$3.29
Per year (365 days)
$39.46

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: Eco Cost Savings — microwave wattage study. Full microwave costs in WA →

The same appliance in other states

Cutting the cost

For small portions, reheating and single servings, the microwave beats the oven comfortably, because it heats the food rather than a big empty cavity. Cover dishes to trap the steam and heat evenly, and stir partway through. Its standby draw is trivial next to how you cook, so the real win is simply reaching for it instead of the oven on quick jobs.

Frequently asked questions

What does a microwave cost per hour in WA?
$0.43 at the typical 1,300 W draw on WA's reference rate of 33.3c/kWh (Western Power (SWIS) network). Efficient models run $0.33, high-draw models $0.57.
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.

10–15 min/day of actual heating in a typical household.