Sharp SDW6748SNS: running cost
ENERGY STAR certifies the Sharp SDW6748SNS at 240 kWh/yr, about average for its category to run for its category.
That $45 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 3.4% above it, ranking 690 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 $2/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 Sharp SDW6748SNS: Sharp SDW6747GS ($45/yr, 240 kWh/yr), then Sharp SDW6757ES ($45/yr, 240 kWh/yr).
Comparing Sharp's own models
Ranked 9 of Sharp's 15 certified dishwashers, this sits between the SDW6888** ($43/yr, the brand's cheapest) and the SDY6768SMS ($45/yr, its priciest).
What this adds up to over time
9 years is NAHB's typical service life for this category; at $45/year, the Sharp SDW6748SNS adds up to about $406 in electricity over that span.
Shopping for a new one
Efficient as certified dishwashers go, $45/year is a reasonable baseline if you're comparing what else is on the market.
See what else is certified in this category before you decide.
If you're keeping it
Whether or not the Sharp SDW6748SNS ever needs replacing, a repair is the more common failure for a dishwasher, one a protection plan budgets for ahead of time.
Where this number comes from
Nothing here is estimated from a nameplate wattage; the 240 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 690 of 737, the Sharp SDW6748SNS 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.