Summit ADADW18SS: running cost
ENERGY STAR certifies the Summit ADADW18SS at 234 kWh/yr, about average for its category to run for its category.
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 256 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 Summit ADADW18SS: Summit ADADW18NT ($44/yr, 234 kWh/yr), then Summit ADADW18W ($44/yr, 234 kWh/yr).
Comparing Summit's own models
Ranked 4 of Summit's 33 certified dishwashers, this sits between the DW18SS4 ($41/yr, the brand's cheapest) and the LDW24WA ($44/yr, its priciest).
What this adds up to over time
Over the 9-year service life NAHB reports for this category, running the Summit ADADW18SS costs roughly $396 in electricity, separate from the purchase price.
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
At $44/year just to run, a dishwasher is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
Ranked 256 of 737, the Summit ADADW18SS 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. The 234 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.