WattCost

Data through June 2026

Running cost · Refrigerators · ENERGY STAR certified

Zline RBSO-ST-24

The Zline RBSO-ST-24 never switches off, and its certified 257 kWh a year works out to about $47 on a U.S.-average electric bill — roughly $3.93 a month for an average continuous draw of 29 watts. Efficiency-wise it's unremarkable in a good way: within 4% of the median certified compact refrigerator (rank 927 of 1645). Where you live moves the bill from $34 a year in Nevada to $135 in Hawaii.

Uses 16% less energy than the U.S. federal minimum

Dimensions 34" H × 23.9" W

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

$47/yr

$7.70 · cheapest certified refrigerators$148 · priciest
Per month
$3.93
Per day
13¢
Certified use
257 kWh/yr
Configuration
Compact Refrigerator
Total capacity
5.2 cu ft
Defrost
Automatic
Ice maker
No
Through-door dispenser
No
42 kWh805 kWh
Where the Zline RBSO-ST-24 (▮) sits among all 4,371 certified refrigerators, by annual kWh

What it costs in every state

Zline RBSO-ST-24: 257 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$42
Alaska28.2¢$72
Arizona15.2¢$39
Arkansas14.1¢$36
California34.7¢$89
Colorado17.1¢$44
Connecticut24.3¢$63
Delaware19.3¢$50
District of Columbia24.4¢$63
Florida15.1¢$39
Georgia16.4¢$42
Hawaiipriciest52.7¢$135
Idaho14.4¢$37
Illinois19.9¢$51
Indiana17.5¢$45
Iowa15.9¢$41
Kansas15.7¢$40
Kentucky14.3¢$37
Louisiana13.5¢$35
Maine29.6¢$76
Maryland21.8¢$56
Massachusetts29.6¢$76
Michigan23.0¢$59
Minnesota17.5¢$45
Mississippi14.9¢$38
Missouri16.2¢$42
Montana15.1¢$39
Nebraska13.3¢$34
Nevadacheapest13.1¢$34
New Hampshire27.0¢$69
New Jersey24.9¢$64
New Mexico15.1¢$39
New York29.5¢$76
North Carolina14.7¢$38
North Dakota14.1¢$36
Ohio19.2¢$49
Oklahoma14.3¢$37
Oregon16.3¢$42
Pennsylvania21.7¢$56
Rhode Island29.2¢$75
South Carolina15.6¢$40
South Dakota15.4¢$39
Tennessee14.1¢$36
Texas15.9¢$41
Utah13.4¢$34
Vermont24.4¢$63
Virginia17.2¢$44
Washington14.9¢$38
West Virginia15.4¢$40
Wisconsin19.6¢$50
Wyoming15.2¢$39

Certified models closest in efficiency

compact refrigerators within reach of 257 kWh/yr
ModelkWh/yr$/yr (US avg)
BLAZE BLZ-SSRF-15257$47
Vissani VS32HSCPB257$47
Vissani VS32HSCPS257$47
Vissani VS32HSCPW257$47
Avanti AR52T3SB256$47
Danby DBC117A1258$47

Run your own numbers

Your rate, your numbers

Per day
13¢
Per month
$3.93
Per year
$47

257 kWh/yr × 18.3¢/kWh = $47/yr

Prefilled with this model's certified 257 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 Zline RBSO-ST-24 use?
ENERGY STAR certifies the Zline RBSO-ST-24 at 257 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 Zline RBSO-ST-24 cost to run per month?
About $3.93 a month at the U.S. average residential rate (18.3¢/kWh) — 13¢ a day, or $47 a year. Your state's rate moves this up or down; see the table above.
Is the Zline RBSO-ST-24 energy efficient?
It uses 4% more electricity than the median certified compact refrigerator.
What does the Zline RBSO-ST-24 cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $34 a year in Nevada (13.1¢/kWh) and $135 in Hawaii (52.7¢/kWh).
How many watts does the Zline RBSO-ST-24 draw on average?
Spread over a year of continuous operation, 257 kWh works out to an average draw of about 29 watts — like leaving a 29-watt bulb on 24/7.

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