Data through June 2026
Running cost · Dishwashers · ENERGY STAR certified
Danby DDW631SDB
Across a standard year of loads (215 cycles under the DOE test), the Danby DDW631SDB uses 155 kWh — about $28 at the U.S. average electricity rate, or roughly 13¢ per load. That puts it in the most efficient tenth of every certified dishwasher — 35% less electricity than the median, ranked 15 of 697. Where you live moves the bill from $20 a year in Nevada to $82 in Hawaii. Electricity is only part of the story for a dishwasher — check the water figure in the specs below.
Uses 14% less energy than the U.S. federal minimum
Dimensions 21.7" W × 19.7" D
Estimated annual running cost · U.S. average rate 18.3¢/kWh
$28/yr
- Per month
- $2.37
- Per day
- 8¢
- Certified use
- 155 kWh/yr
- Type
- Compact
- Capacity
- 6 place settings
- Water use
- 2 gal/cycle
- Tub material
- Hybrid (Plastic & Steel)
- Drying method
- Air Dry
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 16.4¢ | $25 | |
| Alaska | 28.2¢ | $44 | |
| Arizona | 15.2¢ | $24 | |
| Arkansas | 14.1¢ | $22 | |
| California | 34.7¢ | $54 | |
| Colorado | 17.1¢ | $27 | |
| Connecticut | 24.3¢ | $38 | |
| Delaware | 19.3¢ | $30 | |
| District of Columbia | 24.4¢ | $38 | |
| Florida | 15.1¢ | $23 | |
| Georgia | 16.4¢ | $25 | |
| Hawaiipriciest | 52.7¢ | $82 | |
| Idaho | 14.4¢ | $22 | |
| Illinois | 19.9¢ | $31 | |
| Indiana | 17.5¢ | $27 | |
| Iowa | 15.9¢ | $25 | |
| Kansas | 15.7¢ | $24 | |
| Kentucky | 14.3¢ | $22 | |
| Louisiana | 13.5¢ | $21 | |
| Maine | 29.6¢ | $46 | |
| Maryland | 21.8¢ | $34 | |
| Massachusetts | 29.6¢ | $46 | |
| Michigan | 23.0¢ | $36 | |
| Minnesota | 17.5¢ | $27 | |
| Mississippi | 14.9¢ | $23 | |
| Missouri | 16.2¢ | $25 | |
| Montana | 15.1¢ | $23 | |
| Nebraska | 13.3¢ | $21 | |
| Nevadacheapest | 13.1¢ | $20 | |
| New Hampshire | 27.0¢ | $42 | |
| New Jersey | 24.9¢ | $39 | |
| New Mexico | 15.1¢ | $23 | |
| New York | 29.5¢ | $46 | |
| North Carolina | 14.7¢ | $23 | |
| North Dakota | 14.1¢ | $22 | |
| Ohio | 19.2¢ | $30 | |
| Oklahoma | 14.3¢ | $22 | |
| Oregon | 16.3¢ | $25 | |
| Pennsylvania | 21.7¢ | $34 | |
| Rhode Island | 29.2¢ | $45 | |
| South Carolina | 15.6¢ | $24 | |
| South Dakota | 15.4¢ | $24 | |
| Tennessee | 14.1¢ | $22 | |
| Texas | 15.9¢ | $25 | |
| Utah | 13.4¢ | $21 | |
| Vermont | 24.4¢ | $38 | |
| Virginia | 17.2¢ | $27 | |
| Washington | 14.9¢ | $23 | |
| West Virginia | 15.4¢ | $24 | |
| Wisconsin | 19.6¢ | $30 | |
| Wyoming | 15.2¢ | $24 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| BLACK+DECKER BCD6SD | 155 | $28 |
| BLACK+DECKER BCD6W | 155 | $28 |
| Cafe CDD220**W | 155 | $28 |
| Comfee CDC22P | 155 | $28 |
| Danby DDW621WDB | 155 | $28 |
| Edgestar DWP63 | 155 | $28 |
Run your own numbers
Your rate, your numbers
- Per day
- 8¢
- Per month
- $2.37
- Per year
- $28
155 kWh/yr × 18.3¢/kWh = $28/yr
Prefilled with this model's certified 155 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh assumes 215 wash cycles per year (the DOE standard, roughly 4 loads a week) and includes the energy to heat water.
Questions, answered with the data
- How much electricity does the Danby DDW631SDB use?
- ENERGY STAR certifies the Danby DDW631SDB at 155 kWh per year. The certified annual kWh assumes 215 wash cycles per year (the DOE standard, roughly 4 loads a week) and includes the energy to heat water.
- How much does the Danby DDW631SDB cost to run per month?
- About $2.37 a month at the U.S. average residential rate (18.3¢/kWh) — 8¢ a day, or $28 a year. Your state's rate moves this up or down; see the table above.
- Is the Danby DDW631SDB energy efficient?
- It uses 35% less electricity than the median certified dishwasher, placing it in the top 10% of certified models.
- What does the Danby DDW631SDB cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $20 a year in Nevada (13.1¢/kWh) and $82 in Hawaii (52.7¢/kWh).
- What does one load cost with the Danby DDW631SDB?
- Roughly 13¢ per cycle at the U.S. average rate, based on the DOE test's 215 cycles a year.