Bosch DWHD640EFP: running cost
At 240 kWh/yr, the Bosch DWHD640EFP'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 393 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 Bosch DWHD640EFP: BLACK+DECKER BPD8W ($45/yr, 240 kWh/yr), then Bosch DWHD660EFP ($45/yr, 240 kWh/yr).
Comparing Bosch's own models
Ranked 11 of Bosch's 55 certified dishwashers, this sits between the DWHD661EFP ($40/yr, the brand's cheapest) and the SPX68C*** ($45/yr, its priciest).
What this adds up to over time
Over the 9-year service life NAHB reports for this category, running the Bosch DWHD640EFP costs roughly $406 in electricity, separate from the purchase price.
Is it worth replacing?
Efficient as certified dishwashers go, $45/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 Bosch DWHD640EFP 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.
Where this number comes from
Ranked 393 of 737, the Bosch DWHD640EFP 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. The 240 kWh/yr figure is ENERGY STAR's own certification, not a wattage estimate; exact dataset IDs are on the data sources page.