WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

Sub-Zero ID-30C

The Sub-Zero ID-30C never switches off, and its certified 374 kWh a year works out to about $69 on a U.S.-average electric bill — roughly $5.72 a month for an average continuous draw of 43 watts. It sits near the bottom of the certified table — using 52% more than the median compact refrigerator (rank 1617 of 1645) — so the state you live in matters more than usual. The same unit costs $49 a year in Nevada but $197 in Hawaii — electricity rates, not the appliance, make the difference.

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

Dimensions 34.5" H × 30" W

Estimated annual running cost · U.S. average rate 18.3¢/kWh

$69/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$5.72
Per day
19¢
Certified use
374 kWh/yr
Configuration
Compact Refrigerator
Total capacity
5 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Sub-Zero ID-30C (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

Sub-Zero ID-30C: 374 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$61
Alaska28.2¢$106
Arizona15.2¢$57
Arkansas14.1¢$53
California34.7¢$130
Colorado17.1¢$64
Connecticut24.3¢$91
Delaware19.3¢$72
District of Columbia24.4¢$91
Florida15.1¢$56
Georgia16.4¢$61
Hawaiipriciest52.7¢$197
Idaho14.4¢$54
Illinois19.9¢$74
Indiana17.5¢$65
Iowa15.9¢$60
Kansas15.7¢$59
Kentucky14.3¢$53
Louisiana13.5¢$50
Maine29.6¢$111
Maryland21.8¢$82
Massachusetts29.6¢$111
Michigan23.0¢$86
Minnesota17.5¢$66
Mississippi14.9¢$56
Missouri16.2¢$61
Montana15.1¢$57
Nebraska13.3¢$50
Nevadacheapest13.1¢$49
New Hampshire27.0¢$101
New Jersey24.9¢$93
New Mexico15.1¢$56
New York29.5¢$110
North Carolina14.7¢$55
North Dakota14.1¢$53
Ohio19.2¢$72
Oklahoma14.3¢$54
Oregon16.3¢$61
Pennsylvania21.7¢$81
Rhode Island29.2¢$109
South Carolina15.6¢$58
South Dakota15.4¢$57
Tennessee14.1¢$53
Texas15.9¢$60
Utah13.4¢$50
Vermont24.4¢$91
Virginia17.2¢$64
Washington14.9¢$56
West Virginia15.4¢$58
Wisconsin19.6¢$73
Wyoming15.2¢$57

Certified models closest in efficiency

compact refrigerators within reach of 374 kWh/yr
ModelkWh/yr$/yr (US avg)
Lynx LN24REFC386$71
Marvel MLRF*24-IS*1A386$71
Marvel MLRF*24-SS*1A386$71
Marvel MORF*24-SS*1A386$71
Marvel MPRF*24-IS*1A386$71
Marvel MPRF*24-SS*1A386$71

Run your own numbers

Your rate, your numbers

Per day
19¢
Per month
$5.72
Per year
$69

374 kWh/yr × 18.3¢/kWh = $69/yr

Prefilled with this model's certified 374 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-30C use?
ENERGY STAR certifies the Sub-Zero ID-30C at 374 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-30C cost to run per month?
About $5.72 a month at the U.S. average residential rate (18.3¢/kWh) — 19¢ a day, or $69 a year. Your state's rate moves this up or down; see the table above.
Is the Sub-Zero ID-30C energy efficient?
It uses 52% more electricity than the median certified compact refrigerator, which puts it among the least efficient certified models.
What does the Sub-Zero ID-30C cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $49 a year in Nevada (13.1¢/kWh) and $197 in Hawaii (52.7¢/kWh).
How many watts does the Sub-Zero ID-30C draw on average?
Spread over a year of continuous operation, 374 kWh works out to an average draw of about 43 watts — like leaving a 43-watt bulb on 24/7.

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