Running cost for the Danby DDW2400EW
At 239 kWh/yr, the Danby DDW2400EW's ENERGY STAR certification puts it about average for its category to run against every other certified dishwasher.
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% above it, ranking 340 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 $1/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 Danby DDW2400EW: Danby DDW2400ESS ($45/yr, 239 kWh/yr), then Equator BB 1840 ($45/yr, 239 kWh/yr).
Within the Danby lineup
Ranked 9 of Danby's 11 certified dishwashers, this sits between the DDW621WDB ($29/yr, the brand's cheapest) and the DDW2404EBSS ($45/yr, its priciest).
Cost over its typical lifespan
9 years is NAHB's typical service life for this category; at $45/year, the Danby DDW2400EW adds up to about $404 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.
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
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. 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.