What the Smeg DW8630 costs to run
At 219 kWh/yr, the Smeg DW8630's ENERGY STAR certification puts it about average for its category to run against every other certified dishwasher.
The $41 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Smeg DW8630 against the category
That's 5.6% below the dishwasher category average of 232 kWh/yr, and ranks 63 of 737 certified dishwashers for annual running cost, 1 being cheapest. The category average comes from every dishwasher ENERGY STAR currently certifies (737 models), not an outside benchmark, about $2/year below that average at the national rate. See the methodology page.
What sits beside it in the ranking
Asko DBI364* ($41/yr, 220 kWh/yr) costs a little more to run than the Smeg DW8630. Bosch SHX78DC** ($40/yr, 215 kWh/yr) costs a little less.
Same brand, different models
Smeg sells 9 certified dishwashers; this one runs cheapest of them, $4/year under the STU8623, its priciest.
What this adds up to over time
Over the 9-year service life NAHB reports for this category, running the Smeg DW8630 costs roughly $371 in electricity, separate from the purchase price.
Is it worth replacing?
The Smeg DW8630 is already efficient for its category at $41/year. If you're shopping and comparing options, this is roughly what a well-chosen new dishwasher costs to run.
Compare current ENERGY STAR certified dishwashers before buying.
Protecting what you have
$41/year to run is the predictable cost of the Smeg DW8630; a protection plan covers the unpredictable one, a repair bill.
Sourcing
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. Ranked 63 of 737, the Smeg DW8630 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.