WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

LG LF21C6000

Running around the clock, the LG LF21C6000 uses a certified 515 kWh per year — about $94 at the U.S. average rate, or $7.87 a month, the equivalent of a steady 59-watt draw. That's 9% less than the median certified bottom-freezer refrigerator, placing it comfortably in the efficient third of the field (507 of 1478). The same unit costs $68 a year in Nevada but $272 in Hawaii — electricity rates, not the appliance, make the difference.

Uses 6% less energy than the U.S. federal minimum

Dimensions 69.9" H × 32.9" W

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

$94/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$7.87
Per day
26¢
Certified use
515 kWh/yr
Configuration
Bottom Freezer
Total capacity
20.8 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the LG LF21C6000 (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

LG LF21C6000: 515 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$84
Alaska28.2¢$145
Arizona15.2¢$78
Arkansas14.1¢$73
California34.7¢$179
Colorado17.1¢$88
Connecticut24.3¢$125
Delaware19.3¢$99
District of Columbia24.4¢$126
Florida15.1¢$78
Georgia16.4¢$84
Hawaiipriciest52.7¢$272
Idaho14.4¢$74
Illinois19.9¢$102
Indiana17.5¢$90
Iowa15.9¢$82
Kansas15.7¢$81
Kentucky14.3¢$73
Louisiana13.5¢$69
Maine29.6¢$152
Maryland21.8¢$112
Massachusetts29.6¢$152
Michigan23.0¢$118
Minnesota17.5¢$90
Mississippi14.9¢$77
Missouri16.2¢$84
Montana15.1¢$78
Nebraska13.3¢$68
Nevadacheapest13.1¢$68
New Hampshire27.0¢$139
New Jersey24.9¢$128
New Mexico15.1¢$78
New York29.5¢$152
North Carolina14.7¢$76
North Dakota14.1¢$73
Ohio19.2¢$99
Oklahoma14.3¢$74
Oregon16.3¢$84
Pennsylvania21.7¢$112
Rhode Island29.2¢$151
South Carolina15.6¢$80
South Dakota15.4¢$79
Tennessee14.1¢$72
Texas15.9¢$82
Utah13.4¢$69
Vermont24.4¢$126
Virginia17.2¢$89
Washington14.9¢$77
West Virginia15.4¢$80
Wisconsin19.6¢$101
Wyoming15.2¢$78

Certified models closest in efficiency

bottom-freezer refrigerators within reach of 515 kWh/yr
ModelkWh/yr$/yr (US avg)
Beko BBBF2813IM515$94
Blomberg BRFB1322FBI515$94
Conserv RF 1820 FD512$94
COSMO COS-RFFV183GHBK512$94
COSMO COS-RFFV183GHS512$94
COSMO COS-RFFV183RBK512$94

Run your own numbers

Your rate, your numbers

Per day
26¢
Per month
$7.87
Per year
$94

515 kWh/yr × 18.3¢/kWh = $94/yr

Prefilled with this model's certified 515 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 LG LF21C6000 use?
ENERGY STAR certifies the LG LF21C6000 at 515 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 LG LF21C6000 cost to run per month?
About $7.87 a month at the U.S. average residential rate (18.3¢/kWh) — 26¢ a day, or $94 a year. Your state's rate moves this up or down; see the table above.
Is the LG LF21C6000 energy efficient?
It uses 9% less electricity than the median certified bottom-freezer refrigerator, placing it in the efficient third of certified models.
What does the LG LF21C6000 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $68 a year in Nevada (13.1¢/kWh) and $272 in Hawaii (52.7¢/kWh).
How many watts does the LG LF21C6000 draw on average?
Spread over a year of continuous operation, 515 kWh works out to an average draw of about 59 watts — like leaving a 59-watt bulb on 24/7.

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