What the KOSTCH KOS-24DWN06H-S costs to run
The KOSTCH KOS-24DWN06H-S is certified by ENERGY STAR at 240 kWh a year, about average for its category to run among dishwashers currently certified.
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 648 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 KOSTCH KOS-24DWN06H-S: KOSTCH KOS-24DWN06H-R ($45/yr, 240 kWh/yr), then KOSTCH KOS-24DWN06H-W ($45/yr, 240 kWh/yr).
Comparing KOSTCH's own models
Ranked 19 of KOSTCH's 20 certified dishwashers, this sits between the KOS-24DWH03M ($45/yr, the brand's cheapest) and the KOS-24DWN06H-W ($45/yr, its priciest).
KOSTCH KOS-24DWN06H-S over 9 years
Over the 9-year service life NAHB reports for this category, running the KOSTCH KOS-24DWN06H-S costs roughly $406 in electricity, separate from the purchase price.
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.
Worth comparing a few current certified models before deciding.
If you're keeping it
The KOSTCH KOS-24DWN06H-S already costs $45/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 240 kWh/yr is ENERGY STAR's own certified figure for this model. The full Dishwasher category page shows all 737 dishwashers ranked by cost; the state-rate guide covers the half of this number that isn't the appliance.