WattCost

Data through April 2026

Running cost · Refrigerators · ENERGY STAR certified

Insignia NS-RTM12SS7

Running around the clock, the Insignia NS-RTM12SS7 uses a certified 311 kWh per year — about $59 at the U.S. average rate, or $4.88 a month, the equivalent of a steady 36-watt draw. That's 14% less than the median certified top-freezer refrigerator, placing it comfortably in the efficient third of the field (131 of 674). Where you live moves the bill from $38 a year in North Dakota to $145 in Hawaii. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

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

Dimensions 59.9" H × 24.1" W

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

$59/yr

$7.91 · cheapest certified refrigerators$152 · priciest
Per month
$4.88
Per day
16¢
Certified use
311 kWh/yr
Configuration
Top Freezer
Total capacity
11.5 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Insignia NS-RTM12SS7 (▮) sits among all 4,229 certified refrigerators, by annual kWh

What it costs in every state

Insignia NS-RTM12SS7: 311 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$54
Alaska27.4¢$85
Arizona15.5¢$48
Arkansas14.2¢$44
California35.3¢$110
Colorado16.5¢$51
Connecticut32.2¢$100
Delaware18.8¢$58
District of Columbia25.4¢$79
Florida15.4¢$48
Georgia15.4¢$48
Hawaiipriciest46.6¢$145
Idaho12.7¢$39
Illinois20.5¢$64
Indiana17.9¢$56
Iowa13.9¢$43
Kansas15.8¢$49
Kentucky15.0¢$47
Louisiana14.4¢$45
Maine28.4¢$88
Maryland22.1¢$69
Massachusetts29.4¢$92
Michigan21.4¢$67
Minnesota16.4¢$51
Mississippi16.8¢$52
Missouri14.0¢$44
Montana13.9¢$43
Nebraska13.3¢$41
Nevada14.3¢$44
New Hampshire27.2¢$85
New Jersey23.5¢$73
New Mexico15.2¢$47
New York29.4¢$92
North Carolina16.3¢$51
North Dakotacheapest12.3¢$38
Ohio19.5¢$61
Oklahoma13.3¢$41
Oregon15.8¢$49
Pennsylvania21.5¢$67
Rhode Island28.3¢$88
South Carolina17.1¢$53
South Dakota14.5¢$45
Tennessee14.9¢$46
Texas17.0¢$53
Utah13.3¢$41
Vermont24.6¢$76
Virginia17.4¢$54
Washington14.4¢$45
West Virginia16.1¢$50
Wisconsin19.2¢$60
Wyoming14.7¢$46

Certified models closest in efficiency

top-freezer refrigerators within reach of 311 kWh/yr
ModelkWh/yr$/yr (US avg)
Elisii DERTM115**1most efficient311$59
Elisii DERTM115WW1most efficient311$59
Frigidaire FRTE1226ABmost efficient311$59
Frigidaire FRTE1226AVmost efficient311$59
Frigidaire FRTE1226AWmost efficient311$59
Midea HD-423FWmost efficient311$59

Run your own numbers

Your rate, your numbers

Per day
16¢
Per month
$4.88
Per year
$59

311 kWh/yr × 18.8¢/kWh = $59/yr

Prefilled with this model's certified 311 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 Insignia NS-RTM12SS7 use?
ENERGY STAR certifies the Insignia NS-RTM12SS7 at 311 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 Insignia NS-RTM12SS7 cost to run per month?
About $4.88 a month at the U.S. average residential rate (18.8¢/kWh) — 16¢ a day, or $59 a year. Your state's rate moves this up or down; see the table above.
Is the Insignia NS-RTM12SS7 energy efficient?
It uses 14% less electricity than the median certified top-freezer refrigerator, placing it in the efficient third of certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the Insignia NS-RTM12SS7 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $38 a year in North Dakota (12.3¢/kWh) and $145 in Hawaii (46.6¢/kWh).
How many watts does the Insignia NS-RTM12SS7 draw on average?
Spread over a year of continuous operation, 311 kWh works out to an average draw of about 36 watts — like leaving a 36-watt bulb on 24/7.

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