WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero ID-30R

The Sub-Zero ID-30R never switches off, and its certified 221 kWh a year works out to about $42 on a U.S.-average electric bill — roughly $3.47 a month for an average continuous draw of 25 watts. Efficiency-wise it's unremarkable in a good way: within 10% of the median certified compact refrigerator (rank 570 of 1589). The same unit costs $27 a year in North Dakota but $103 in Hawaii — electricity rates, not the appliance, make the difference.

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

$42/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$3.47
Per day
11¢
Certified use
221 kWh/yr
Configuration
Compact Refrigerator
Total capacity
5.3 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero ID-30R (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero ID-30R: 221 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$38
Alaska27.4¢$60
Arizona15.5¢$34
Arkansas14.2¢$31
California35.3¢$78
Colorado16.5¢$37
Connecticut32.2¢$71
Delaware18.8¢$42
District of Columbia25.4¢$56
Florida15.4¢$34
Georgia15.4¢$34
Hawaiipriciest46.6¢$103
Idaho12.7¢$28
Illinois20.5¢$45
Indiana17.9¢$40
Iowa13.9¢$31
Kansas15.8¢$35
Kentucky15.0¢$33
Louisiana14.4¢$32
Maine28.4¢$63
Maryland22.1¢$49
Massachusetts29.4¢$65
Michigan21.4¢$47
Minnesota16.4¢$36
Mississippi16.8¢$37
Missouri14.0¢$31
Montana13.9¢$31
Nebraska13.3¢$29
Nevada14.3¢$32
New Hampshire27.2¢$60
New Jersey23.5¢$52
New Mexico15.2¢$33
New York29.4¢$65
North Carolina16.3¢$36
North Dakotacheapest12.3¢$27
Ohio19.5¢$43
Oklahoma13.3¢$29
Oregon15.8¢$35
Pennsylvania21.5¢$47
Rhode Island28.3¢$63
South Carolina17.1¢$38
South Dakota14.5¢$32
Tennessee14.9¢$33
Texas17.0¢$38
Utah13.3¢$29
Vermont24.6¢$54
Virginia17.4¢$38
Washington14.4¢$32
West Virginia16.1¢$35
Wisconsin19.2¢$42
Wyoming14.7¢$32

Certified models closest in efficiency

compact refrigerators within reach of 221 kWh/yr
ModelkWh/yr$/yr (US avg)
Danby DAR017A3221$42
Danby Designer DAR017A2221$42
roomwell REFNFR1700221$42
Amana AMAR35S1E220$41
ARCTIC CHEF ACFR325-C-BLACK220$41
Arctic King ARM33S5ABB220$41

Run your own numbers

Your rate, your numbers

Per day
11¢
Per month
$3.47
Per year
$42

221 kWh/yr × 18.8¢/kWh = $42/yr

Prefilled with this model's certified 221 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 ID-30R use?
ENERGY STAR certifies the Sub-Zero ID-30R at 221 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 ID-30R cost to run per month?
About $3.47 a month at the U.S. average residential rate (18.8¢/kWh) — 11¢ a day, or $42 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero ID-30R energy efficient?
It uses 10% less electricity than the median certified compact refrigerator.
What does the Sub-Zero ID-30R cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $27 a year in North Dakota (12.3¢/kWh) and $103 in Hawaii (46.6¢/kWh).
How many watts does the Sub-Zero ID-30R draw on average?
Spread over a year of continuous operation, 221 kWh works out to an average draw of about 25 watts — like leaving a 25-watt bulb on 24/7.

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