WattCost

Data through June 2026

Running cost · Computer Monitors · ENERGY STAR certified

BenQ GW2490TC-T

At the standardized usage ENERGY STAR assumes, the BenQ GW2490TC-T consumes 36 kWh a year — about $6.66 at the U.S. average electricity rate ($0.55 a month). Compared with the median certified computer monitor, it uses 19% less electricity — rank 303 out of 1530. The same unit costs $4.76 a year in Nevada but $19 in Hawaii — electricity rates, not the appliance, make the difference.

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

$6.66/yr

$2.04 · cheapest certified computer monitors$74 · priciest
Per month
$0.55
Per day
2¢
Certified use
36 kWh/yr
Screen size
23.8 in
Panel
TFT-LCD
On-mode power
11.54 W
Sleep-mode power
0.16 W
11 kWh403 kWh
Where the BenQ GW2490TC-T (▮) sits among all 1,530 certified computer monitors, by annual kWh

What it costs in every state

BenQ GW2490TC-T: 36 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama16.4¢$5.95
Alaska28.2¢$10
Arizona15.2¢$5.51
Arkansas14.1¢$5.12
California34.7¢$13
Colorado17.1¢$6.22
Connecticut24.3¢$8.83
Delaware19.3¢$7.00
District of Columbia24.4¢$8.85
Florida15.1¢$5.48
Georgia16.4¢$5.94
Hawaiipriciest52.7¢$19
Idaho14.4¢$5.21
Illinois19.9¢$7.22
Indiana17.5¢$6.35
Iowa15.9¢$5.78
Kansas15.7¢$5.70
Kentucky14.3¢$5.17
Louisiana13.5¢$4.90
Maine29.6¢$11
Maryland21.8¢$7.93
Massachusetts29.6¢$11
Michigan23.0¢$8.34
Minnesota17.5¢$6.36
Mississippi14.9¢$5.40
Missouri16.2¢$5.89
Montana15.1¢$5.49
Nebraska13.3¢$4.81
Nevadacheapest13.1¢$4.76
New Hampshire27.0¢$9.80
New Jersey24.9¢$9.05
New Mexico15.1¢$5.47
New York29.5¢$11
North Carolina14.7¢$5.35
North Dakota14.1¢$5.12
Ohio19.2¢$6.96
Oklahoma14.3¢$5.20
Oregon16.3¢$5.92
Pennsylvania21.7¢$7.89
Rhode Island29.2¢$11
South Carolina15.6¢$5.64
South Dakota15.4¢$5.57
Tennessee14.1¢$5.11
Texas15.9¢$5.78
Utah13.4¢$4.85
Vermont24.4¢$8.87
Virginia17.2¢$6.25
Washington14.9¢$5.41
West Virginia15.4¢$5.61
Wisconsin19.6¢$7.10
Wyoming15.2¢$5.53

Certified models closest in efficiency

computer monitors within reach of 36 kWh/yr
ModelkWh/yr$/yr (US avg)
ASUS BE24E, BE24EQSB, BE24EQSB-P, BE24EQSB-J, BE24EQSB-W, BE24EQSB-G, BE24EQSBZ, BE24EQSBY, C624EQS, C624EQS-P, C624EQS-J, C624EQS-W, C624EQS-G, C624EQSZ, C624EQSY, BE24EQK, BE24EQK-P, BE24EQK-J, BE24EQK-W, BE24EQK-G, BE24EQKY36$6.66
HP 524pf36$6.65
LG 22MP41536$6.65
DELL E2420Hf36$6.66
MSI PRO MAX 241PHW E1436$6.65
PHILIPS 241E2FD36$6.64

Run your own numbers

Your rate, your numbers

Per day
2¢
Per month
$0.55
Per year
$6.60

36 kWh/yr × 18.3¢/kWh = $6.60/yr

Prefilled with this model's certified 36 kWh/yr — adjust if your usage differs from the DOE test basis. The certified annual kWh (TEC) assumes the monitor is on 35% of the day and asleep the other 65%, per the ENERGY STAR test basis.

Questions, answered with the data

How much electricity does the BenQ GW2490TC-T use?
ENERGY STAR certifies the BenQ GW2490TC-T at 36 kWh per year. The certified annual kWh (TEC) assumes the monitor is on 35% of the day and asleep the other 65%, per the ENERGY STAR test basis.
How much does the BenQ GW2490TC-T cost to run per month?
About $0.55 a month at the U.S. average residential rate (18.3¢/kWh) — 2¢ a day, or $6.66 a year. Your state's rate moves this up or down; see the table above.
Is the BenQ GW2490TC-T energy efficient?
It uses 19% less electricity than the median certified computer monitor, placing it in the efficient third of certified models.
What does the BenQ GW2490TC-T cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $4.76 a year in Nevada (13.1¢/kWh) and $19 in Hawaii (52.7¢/kWh).

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