Running cost for the Blomberg DWT 81900 ***WS
The Blomberg DWT 81900 ***WS is certified by ENERGY STAR at 239 kWh a year, about average for its category to run among dishwashers currently certified.
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.
How the Blomberg DWT 81900 ***WS compares to other dishwashers
The category average is 232 kWh/yr; this model runs 3% above it, ranking 330 of 737 dishwashers tracked here for running cost. 737 certified dishwashers, one average, about $1/year of daylight between it and this model; the full methodology has the rest.
Neighbouring models
Right next to the Blomberg DWT 81900 ***WS on that list: Bertazzoni DW24T2IXB ($45/yr, 239 kWh/yr) runs slightly less, while Bosch SGE53C56UC ($45/yr, 239 kWh/yr) runs slightly more.
Comparing Blomberg's own models
Of the 11 ENERGY STAR certified dishwashers Blomberg makes, the DWT 81900 ***WS costs the most to run, $4/year more than Blomberg's cheapest, the DWS 51502 ****.
What this adds up to over time
9 years is NAHB's typical service life for this category; at $45/year, the Blomberg DWT 81900 ***WS adds up to about $404 in electricity over that span.
Shopping for a new one
Efficient as certified dishwashers go, $45/year is a reasonable baseline if you're comparing what else is on the market.
Worth comparing a few current certified models before deciding.
If you're keeping it
The Blomberg DWT 81900 ***WS already costs $45/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
Nothing here is estimated from a nameplate wattage; the 239 kWh/yr is ENERGY STAR's own certified figure for this model. Ranked 330 of 737, the Blomberg DWT 81900 ***WS 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.