Running cost for the Insignia NS-DWRF2*****
At 240 kWh/yr, the Insignia NS-DWRF2*****'s ENERGY STAR certification puts it about average for its category to run against every other certified dishwasher.
That $45 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 3.4% above it, ranking 597 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 $2/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 Insignia NS-DWRF2*****: Insignia NS-DWR3SS1 ($45/yr, 240 kWh/yr), then JANSKA JDW-2400 ($45/yr, 240 kWh/yr).
Comparing Insignia's own models
Of the 4 ENERGY STAR certified dishwashers Insignia makes, the NS-DWRF2***** costs the most to run, about the same, within a dollar a year, more than Insignia's cheapest, the NS-DWF2******.
Cost over its typical lifespan
9 years is NAHB's typical service life for this category; at $45/year, the Insignia NS-DWRF2***** adds up to about $406 in electricity over that span.
Weighing a replacement
Efficient as certified dishwashers go, $45/year is a reasonable baseline if you're comparing what else is on the market.
Compare current ENERGY STAR certified dishwashers before buying.
If you're keeping it
At $45/year just to run, a dishwasher is worth protecting against an unplanned repair bill on top of that.
Where this number comes from
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. The 240 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.