WattCost

Data through June 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 $57 at the U.S. average rate, or $4.75 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 (134 of 713). Where you live moves the bill from $41 a year in Nevada to $164 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 18.3¢/kWh

$57/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$4.75
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 4,371 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
Alabama16.4¢$51
Alaska28.2¢$88
Arizona15.2¢$47
Arkansas14.1¢$44
California34.7¢$108
Colorado17.1¢$53
Connecticut24.3¢$76
Delaware19.3¢$60
District of Columbia24.4¢$76
Florida15.1¢$47
Georgia16.4¢$51
Hawaiipriciest52.7¢$164
Idaho14.4¢$45
Illinois19.9¢$62
Indiana17.5¢$54
Iowa15.9¢$50
Kansas15.7¢$49
Kentucky14.3¢$44
Louisiana13.5¢$42
Maine29.6¢$92
Maryland21.8¢$68
Massachusetts29.6¢$92
Michigan23.0¢$71
Minnesota17.5¢$54
Mississippi14.9¢$46
Missouri16.2¢$50
Montana15.1¢$47
Nebraska13.3¢$41
Nevadacheapest13.1¢$41
New Hampshire27.0¢$84
New Jersey24.9¢$78
New Mexico15.1¢$47
New York29.5¢$92
North Carolina14.7¢$46
North Dakota14.1¢$44
Ohio19.2¢$60
Oklahoma14.3¢$45
Oregon16.3¢$51
Pennsylvania21.7¢$68
Rhode Island29.2¢$91
South Carolina15.6¢$48
South Dakota15.4¢$48
Tennessee14.1¢$44
Texas15.9¢$50
Utah13.4¢$42
Vermont24.4¢$76
Virginia17.2¢$54
Washington14.9¢$46
West Virginia15.4¢$48
Wisconsin19.6¢$61
Wyoming15.2¢$47

Certified models closest in efficiency

top-freezer refrigerators within reach of 311 kWh/yr
ModelkWh/yr$/yr (US avg)
Elisii DERTM115**1most efficient311$57
Elisii DERTM115WW1most efficient311$57
Frigidaire FRTE1226ABmost efficient311$57
Frigidaire FRTE1226AVmost efficient311$57
Frigidaire FRTE1226AWmost efficient311$57
Midea HD-423FWmost efficient311$57

Run your own numbers

Your rate, your numbers

Per day
16¢
Per month
$4.75
Per year
$57

311 kWh/yr × 18.3¢/kWh = $57/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 $4.75 a month at the U.S. average residential rate (18.3¢/kWh) — 16¢ a day, or $57 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 $41 a year in Nevada (13.1¢/kWh) and $164 in Hawaii (52.7¢/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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