Running cost for the Smeg DW8600
The Smeg DW8600 is certified by ENERGY STAR at 234 kWh a year, about average for its category to run among dishwashers currently certified.
That $44 is priced at 18.8¢/kWh, the average of all 51 state rates this site tracks. Your own state's rate is one click away.
Efficient, or not, for a dishwasher
The category average is 232 kWh/yr; this model runs 0.9% above it, ranking 248 of 737 dishwashers tracked here for running cost. That average is drawn from all 737 dishwashers ENERGY STAR currently certifies, not an outside number, a $0/year gap from this model at the national rate. Full sourcing is in the sourcing notes.
Right next to it on the list
A rank or two either side of the Smeg DW8600: Savalo SDW50012PR ($44/yr, 234 kWh/yr), then Smeg DW8601 ($44/yr, 234 kWh/yr).
Comparing Smeg's own models
Ranked 3 of Smeg's 9 certified dishwashers, this sits between the DW8630 ($41/yr, the brand's cheapest) and the STU8623 ($45/yr, its priciest).
What this adds up to over time
9 years is NAHB's typical service life for this category; at $44/year, the Smeg DW8600 adds up to about $396 in electricity over that span.
Is it worth replacing?
Efficient as certified dishwashers go, $44/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified dishwashers before buying.
If you're keeping it
The Smeg DW8600 already costs $44/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
Where this number comes from
Nothing here is estimated from a nameplate wattage; the 234 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 248 of 737, the Smeg DW8600 sits in the middle of the dishwasher category, see the guide to why your state changes this number for the other half of the math.