What the Summit LDW18NTA costs to run
The Summit LDW18NTA is certified by ENERGY STAR at 234 kWh a year, about average for its category to run among dishwashers currently certified.
The $44 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
Summit LDW18NTA against the category
That's 0.9% above the dishwasher category average of 232 kWh/yr, and ranks 279 of 737 certified dishwashers for annual running cost, 1 being cheapest. The category average comes from every dishwasher ENERGY STAR currently certifies (737 models), not an outside benchmark, about $0/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
Summit LDW18SSA ($44/yr, 234 kWh/yr) costs a little more to run than the Summit LDW18NTA. Summit LDW18BA ($44/yr, 234 kWh/yr) costs a little less.
Same brand, different models
Summit makes 33 ENERGY STAR certified dishwashers; this one ranks 27 of 33 for running cost, between the brand's cheapest, the DW18SS4 at $41/yr, and its priciest, the LDW24WA at $44/yr.
What this adds up to over time
9 years is NAHB's typical service life for this category; at $44/year, the Summit LDW18NTA adds up to about $396 in electricity over that span.
Weighing a replacement
The Summit LDW18NTA is already efficient for its category at $44/year. If you're shopping and comparing options, this is roughly what a well-chosen new dishwasher costs to run.
Compare current ENERGY STAR certified dishwashers before buying.
Protecting what you have
$44/year to run is the predictable cost of the Summit LDW18NTA; a protection plan covers the unpredictable one, a repair bill.
Sourcing
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.