Running cost for the GE GDT66***N***
ENERGY STAR certifies the GE GDT66***N*** at 240 kWh/yr, about average for its category to run for its category.
The $45 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
GE GDT66***N*** against the category
That's 3.4% above the dishwasher category average of 232 kWh/yr, and ranks 551 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 $2/year above that average at the national rate. See the methodology page.
What sits beside it in the ranking
GE GDT67***V*** ($45/yr, 240 kWh/yr) costs a little more to run than the GE GDT66***N***. GE GDT65***V*** ($45/yr, 240 kWh/yr) costs a little less.
Within the GE lineup
GE makes 41 ENERGY STAR certified dishwashers; this one ranks 36 of 41 for running cost, between the brand's cheapest, the GBF180S*M*** at $44/yr, and its priciest, the UDT16***V*** at $45/yr.
GE GDT66***N*** over 9 years
NAHB's Study of Life Expectancy of Home Components puts a typical dishwasher's service life at 9 years; run the GE GDT66***N*** that long and it costs about $406 in electricity, on top of whatever it cost to buy.
Weighing a replacement
The GE GDT66***N*** is already efficient for its category at $45/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
At $45/year just to run, a dishwasher is worth protecting against an unplanned repair bill on top of that.
Sourcing
Two sourced numbers, nothing modeled: ENERGY STAR's certified kWh/yr for this exact model, and EIA's published state electricity rate. Ranked 551 of 737, the GE GDT66***N*** 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.