WattCost

Data through April 2026

Running cost · Freezers · ENERGY STAR certified

Insignia NS-UZ21WH0-C

The Insignia NS-UZ21WH0-C never switches off, and its certified 492 kWh a year works out to about $93 on a U.S.-average electric bill — roughly $7.72 a month for an average continuous draw of 56 watts. That's close to the middle of the certified pack — about 12% above the median upright freezer, ranked 292 of 431. The same unit costs $61 a year in North Dakota but $229 in Hawaii — electricity rates, not the appliance, make the difference.

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

$93/yr

$26 · cheapest certified freezers$122 · priciest
Per month
$7.72
Per day
25¢
Certified use
492 kWh/yr
Configuration
Upright Freezer
Total capacity
21 cu ft
Defrost
Automatic
Compact
No
137 kWh649 kWh
Where the Insignia NS-UZ21WH0-C (▮) sits among all 568 certified freezers, by annual kWh

What it costs in every state

Insignia NS-UZ21WH0-C: 492 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$86
Alaska27.4¢$135
Arizona15.5¢$76
Arkansas14.2¢$70
California35.3¢$173
Colorado16.5¢$81
Connecticut32.2¢$159
Delaware18.8¢$92
District of Columbia25.4¢$125
Florida15.4¢$76
Georgia15.4¢$76
Hawaiipriciest46.6¢$229
Idaho12.7¢$62
Illinois20.5¢$101
Indiana17.9¢$88
Iowa13.9¢$68
Kansas15.8¢$78
Kentucky15.0¢$74
Louisiana14.4¢$71
Maine28.4¢$140
Maryland22.1¢$109
Massachusetts29.4¢$145
Michigan21.4¢$105
Minnesota16.4¢$81
Mississippi16.8¢$82
Missouri14.0¢$69
Montana13.9¢$68
Nebraska13.3¢$65
Nevada14.3¢$70
New Hampshire27.2¢$134
New Jersey23.5¢$116
New Mexico15.2¢$75
New York29.4¢$145
North Carolina16.3¢$80
North Dakotacheapest12.3¢$61
Ohio19.5¢$96
Oklahoma13.3¢$65
Oregon15.8¢$78
Pennsylvania21.5¢$106
Rhode Island28.3¢$139
South Carolina17.1¢$84
South Dakota14.5¢$71
Tennessee14.9¢$74
Texas17.0¢$84
Utah13.3¢$65
Vermont24.6¢$121
Virginia17.4¢$86
Washington14.4¢$71
West Virginia16.1¢$79
Wisconsin19.2¢$95
Wyoming14.7¢$72

Certified models closest in efficiency

upright freezers within reach of 492 kWh/yr
ModelkWh/yr$/yr (US avg)
Arctic Wind AUFSS210ETH-LK492$93
Arctic Wind AUFW210ETH-LK492$93
ARTT ATUF21ES492$93
ARTT ATUF21ES SS492$93
Danby Designer DUF206E1492$93
Danby DUF206E1SSLDB492$93

Run your own numbers

Your rate, your numbers

Per day
25¢
Per month
$7.72
Per year
$93

492 kWh/yr × 18.8¢/kWh = $93/yr

Prefilled with this model's certified 492 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.

Questions, answered with the data

How much electricity does the Insignia NS-UZ21WH0-C use?
ENERGY STAR certifies the Insignia NS-UZ21WH0-C at 492 kWh per year. The certified annual kWh comes from the DOE test procedure, which measures continuous 24/7 operation at standardized temperatures.
How much does the Insignia NS-UZ21WH0-C cost to run per month?
About $7.72 a month at the U.S. average residential rate (18.8¢/kWh) — 25¢ a day, or $93 a year. Your state's rate moves this up or down; see the table above.
Is the Insignia NS-UZ21WH0-C energy efficient?
It uses 12% more electricity than the median certified upright freezer.
What does the Insignia NS-UZ21WH0-C cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $61 a year in North Dakota (12.3¢/kWh) and $229 in Hawaii (46.6¢/kWh).
How many watts does the Insignia NS-UZ21WH0-C draw on average?
Spread over a year of continuous operation, 492 kWh works out to an average draw of about 56 watts — like leaving a 56-watt bulb on 24/7.

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