c/kWh
$/kLusage charge on your water bill
per week
Capacity
12 place
Built-in
Energy rating
3
WELS water rating 3
Annual electricity use
280 kWh
Label: 281 kWh Β· 0.77 kWh per cycle
Estimated running cost
$103 / year
$90 electricity + $13 water Β· $1,031 over 10 years
Water per cycle
14.7 L Β· Normal ECO programme

11% more electricity than the median of 11 comparable 10–12 place built-in dishwasher registrations (253 kWh a year on the label basis). It uses less than 18% of them. At your rates that is about $9 a year more than the median, $89 over 10 years.

How efficient is it for its size?

kWh per year. Bar: the middle 80% of 11 comparable 10–12 place built-in dishwasher registrations. Dot: this model (above the median). Hover or tab to a mark for its value.

Cohort: every currently registered 10–12 place built-in dishwasher sold in Australia, counted once per registration, on the label usage basis.

Dishwashers that use less electricity

Same type and size group, at least 3% lower annual kWh on the label basis.

ModelStarsEst. cost / yrCompare
Bosch SPU6IMS01A11 place settings205 kWh/yr3.5$66
Bellissimo HNBD12FI12 place settings253 kWh/yr3$81
Artusi ADW5001W12 place settings256 kWh/yr3$82
Artusi ADW5001X12 place settings256 kWh/yr3$82
Kleenmaid DW6020XB12 place settings265 kWh/yr3$85

kWh and cost on the label usage basis; the product page adjusts to your usage.

Dishwashers similar to the Smeg STH903

ModelStarsEst. cost / yrCompare
Fotile BD3B-G3-Y12 place settings282 kWh/yr3$90
Artusi ADW5001X12 place settings256 kWh/yr3$82
Kleenmaid DW6020XB12 place settings265 kWh/yr3$85
Stirling STR-DWSS12MW12 place settings282 kWh/yr3$90
Bellissimo HNBD12FI12 place settings253 kWh/yr3$81
Stirling STR-DWSS12M12 place settings282 kWh/yr3$90
Artusi ADW500112 place settings256 kWh/yr3$82
Bosch SPU6IMS01A11 place settings205 kWh/yr3.5$66

kWh and cost on the label usage basis; the product page adjusts to your usage.

Compare STH903 with another dishwasher

Smeg STH903 specifications

Type
Built-in
Place settings
12
Water per cycle (labelled programme)
14.7 L
Programme tested
Normal ECO
Programme time
178 min
Water connection
Single
Water softener
No
Delay start
Yes
Standby power
0.06 W
Dimensions (WΓ—HΓ—D)
860 Γ— 580 Γ— 600 mm
Annual energy (label)
281 kWh
Star rating index
3.01
WELS registration
D00927 (exact_model, confidence 0.98)
WELS water per cycle
14.7 L
Country of manufacture
Italy

Australian GEMS registration details

Registration number
ADW0871
GEMS registration id
142159
Status
approved, available (self-reported)
Registration expires
18 October 2026
Registered for sale in
Australia, Fiji, New Zealand
Family
–
Regulatory standard
Greenhouse and Energy Minimum Standards (Dishwashers) Determination 2024
Test standard
AS/NZS 2007.1:2005

Source: Australian Government Energy Rating (GEMS) registration data, DCCEEW via data.gov.au (CC BY 3.0 AU). Dataset published 20 September 2026; last checked 20 September 2026. How the derived figures are calculated.