What the KOSTCH KOS-24DWH03M-S costs to run
ENERGY STAR certifies the KOSTCH KOS-24DWH03M-S 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 633 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-24DWH03M-S: KOSTCH KOS-24DWH03M-R ($45/yr, 240 kWh/yr), then KOSTCH KOS-24DWH03M-W ($45/yr, 240 kWh/yr).
Same brand, different models
Ranked 4 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-24DWH03M-S over 9 years
Over the 9-year service life NAHB reports for this category, running the KOSTCH KOS-24DWH03M-S costs roughly $406 in electricity, separate from the purchase price.
Weighing a replacement
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
At $45/year just to run, a dishwasher is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
Ranked 633 of 737, the KOSTCH KOS-24DWH03M-S 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 240 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.