What the LG LDNPM545* costs to run
At 220 kWh/yr, the LG LDNPM545*'s ENERGY STAR certification puts it about average for its category to run against every other certified dishwasher.
The $41 figure above uses the simple average of all 51 published state rates. Pick your state for the real number.
LG LDNPM545* against the category
That's 5.2% below the dishwasher category average of 232 kWh/yr, and ranks 81 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 below that average at the national rate. See the methodology page.
What sits beside it in the ranking
LG LDNPM654* ($41/yr, 220 kWh/yr) costs a little more to run than the LG LDNPM545*. LG LDNPH85C* ($41/yr, 220 kWh/yr) costs a little less.
Within the LG lineup
LG makes 38 ENERGY STAR certified dishwashers; this one ranks 6 of 38 for running cost, between the brand's cheapest, the LDNFC33L* at $41/yr, and its priciest, the SDWD24** at $45/yr.
LG LDNPM545* over 9 years
NAHB's Study of Life Expectancy of Home Components puts a typical dishwasher's service life at 9 years; run the LG LDNPM545* that long and it costs about $372 in electricity, on top of whatever it cost to buy.
Shopping for a new one
The LG LDNPM545* is already efficient for its category at $41/year. If you're shopping and comparing options, this is roughly what a well-chosen new dishwasher costs to run.
Worth comparing a few current certified models before deciding.
Protecting what you have
The LG LDNPM545* 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.
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.