WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero DET3050CI

The Sub-Zero DET3050CI never switches off, and its certified 550 kWh a year works out to about $104 on a U.S.-average electric bill — roughly $8.63 a month for an average continuous draw of 63 watts. That's close to the middle of the certified pack — about 2% under the median bottom-freezer refrigerator, ranked 669 of 1458. Where you live moves the bill from $68 a year in North Dakota to $256 in Hawaii.

Uses 10% less energy than the U.S. federal minimum

Dimensions 84" H × 30" W

Estimated annual running cost · U.S. average rate 18.8¢/kWh

$104/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$8.63
Per day
28¢
Certified use
550 kWh/yr
Configuration
Bottom Freezer
Total capacity
15.6 cu ft
Defrost
Automatic
Ice maker
Yes
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero DET3050CI (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero DET3050CI: 550 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$96
Alaska27.4¢$150
Arizona15.5¢$85
Arkansas14.2¢$78
California35.3¢$194
Colorado16.5¢$91
Connecticut32.2¢$177
Delaware18.8¢$103
District of Columbia25.4¢$140
Florida15.4¢$85
Georgia15.4¢$85
Hawaiipriciest46.6¢$256
Idaho12.7¢$70
Illinois20.5¢$113
Indiana17.9¢$98
Iowa13.9¢$76
Kansas15.8¢$87
Kentucky15.0¢$83
Louisiana14.4¢$79
Maine28.4¢$156
Maryland22.1¢$121
Massachusetts29.4¢$162
Michigan21.4¢$118
Minnesota16.4¢$90
Mississippi16.8¢$92
Missouri14.0¢$77
Montana13.9¢$76
Nebraska13.3¢$73
Nevada14.3¢$79
New Hampshire27.2¢$150
New Jersey23.5¢$129
New Mexico15.2¢$83
New York29.4¢$162
North Carolina16.3¢$89
North Dakotacheapest12.3¢$68
Ohio19.5¢$107
Oklahoma13.3¢$73
Oregon15.8¢$87
Pennsylvania21.5¢$118
Rhode Island28.3¢$156
South Carolina17.1¢$94
South Dakota14.5¢$80
Tennessee14.9¢$82
Texas17.0¢$93
Utah13.3¢$73
Vermont24.6¢$135
Virginia17.4¢$96
Washington14.4¢$79
West Virginia16.1¢$88
Wisconsin19.2¢$106
Wyoming14.7¢$81

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 550 kWh/yr
ModelkWh/yr$/yr (US avg)
ARTT ATBM19550$104
Bertazzoni REF36BMBIPLT550$104
Bertazzoni REF36BMBIPRT550$104
Bertazzoni REF36BMBIXLT550$104
Bertazzoni REF36BMBIXRT550$104
Criterion CBMR187M4550$104

Run your own numbers

Your rate, your numbers

Per day
28¢
Per month
$8.63
Per year
$104

550 kWh/yr × 18.8¢/kWh = $104/yr

Prefilled with this model's certified 550 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.

Questions, answered with the data

How much electricity does the Sub-Zero DET3050CI use?
ENERGY STAR certifies the Sub-Zero DET3050CI at 550 kWh per year. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures — refrigerators never get a day off.
How much does the Sub-Zero DET3050CI cost to run per month?
About $8.63 a month at the U.S. average residential rate (18.8¢/kWh) — 28¢ a day, or $104 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero DET3050CI energy efficient?
It uses 2% less electricity than the median certified bottom-freezer refrigerator.
What does the Sub-Zero DET3050CI cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $68 a year in North Dakota (12.3¢/kWh) and $256 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero DET3050CI draw on average?
Spread over a year of continuous operation, 550 kWh works out to an average draw of about 63 watts — like leaving a 63-watt bulb on 24/7.

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