What the LG LDNPQ555* costs to run
The LG LDNPQ555* is certified by ENERGY STAR at 220 kWh a year, about average for its category to run among dishwashers currently certified.
That $41 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.
How the LG LDNPQ555* compares to other dishwashers
Against the category average of 232 kWh/yr, this model uses 5.2% less, ranking 85 of 737 dishwashers tracked here for running cost. 737 certified dishwashers, one average, about $2/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the LG LDNPQ555* on that list: LG LDNPQ44H* ($41/yr, 220 kWh/yr) runs slightly less, while LG LDNTC326* ($41/yr, 220 kWh/yr) runs slightly more.
Same brand, different models
Ranked 10 of LG's 38 certified dishwashers, this sits between the LDNFC33L* ($41/yr, the brand's cheapest) and the SDWD24** ($45/yr, its priciest).
Cost over its typical lifespan
Over the 9-year service life NAHB reports for this category, running the LG LDNPQ555* costs roughly $372 in electricity, separate from the purchase price.
Weighing a replacement
Efficient as certified dishwashers go, $41/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 LG LDNPQ555* already costs $41/year to run; a repair bill on top of that is the kind of expense a protection plan exists to smooth out.
How this was checked
At rank 85 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 220 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.