What the Kenmore 1470# costs to run
ENERGY STAR certifies the Kenmore 1470# 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 240 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 Kenmore 1470#: Kenmore 1469# ($44/yr, 234 kWh/yr), then KOOLMORE KM-DW1852-PR ($44/yr, 234 kWh/yr).
Comparing Kenmore's own models
Ranked 8 of Kenmore's 19 certified dishwashers, this sits between the 1460# ($44/yr, the brand's cheapest) and the KKDW3RPHLIFT-45SS ($45/yr, its priciest).
Cost over its typical lifespan
NAHB's Study of Life Expectancy of Home Components puts a typical dishwasher's service life at 9 years; run the Kenmore 1470# that long and it costs about $396 in electricity, on top of whatever it cost to buy.
Shopping for a new one
Efficient as certified dishwashers go, $44/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
The Kenmore 1470# already costs $44/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
At rank 240 of 737 for running cost, see the dishwasher category page for the rest of the field, or the guide to how much your state matters. The 234 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.