WattCost

Data through April 2026

Running cost · Computer Monitors · ENERGY STAR certified

Vastec MF2739-K

The Vastec MF2739-K's certified consumption is 37 kWh per year, which prices out to about $7.00 at the national average rate — your hours of use scale that directly. That's 18% less than the median certified computer monitor, placing it comfortably in the efficient third of the field (333 of 1482). The same unit costs $4.59 a year in North Dakota but $17 in Hawaii — electricity rates, not the appliance, make the difference. It also meets ENERGY STAR's stricter “Most Efficient” criteria.

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

$7.00/yr

$2.09 · cheapest certified computer monitors$76 · priciest
Per month
$0.58
Per day
2¢
Certified use
37 kWh/yr
Screen size
27 in
Panel
IPS LCD
On-mode power
11.87 W
Sleep-mode power
0.11 W
11 kWh403 kWh
Where the Vastec MF2739-K (▮) sits among all 1,482 certified computer monitors, by annual kWh

What it costs in every state

Vastec MF2739-K: 37 kWh/yr × each state's average residential rate (EIA)
StateRate ¢/kWhThis model $/yrRelative cost
Alabama17.4¢$6.47
Alaska27.4¢$10
Arizona15.5¢$5.76
Arkansas14.2¢$5.27
California35.3¢$13
Colorado16.5¢$6.15
Connecticut32.2¢$12
Delaware18.8¢$6.99
District of Columbia25.4¢$9.45
Florida15.4¢$5.72
Georgia15.4¢$5.72
Hawaiipriciest46.6¢$17
Idaho12.7¢$4.72
Illinois20.5¢$7.61
Indiana17.9¢$6.66
Iowa13.9¢$5.15
Kansas15.8¢$5.87
Kentucky15.0¢$5.59
Louisiana14.4¢$5.37
Maine28.4¢$11
Maryland22.1¢$8.21
Massachusetts29.4¢$11
Michigan21.4¢$7.95
Minnesota16.4¢$6.10
Mississippi16.8¢$6.23
Missouri14.0¢$5.21
Montana13.9¢$5.17
Nebraska13.3¢$4.94
Nevada14.3¢$5.31
New Hampshire27.2¢$10
New Jersey23.5¢$8.75
New Mexico15.2¢$5.63
New York29.4¢$11
North Carolina16.3¢$6.04
North Dakotacheapest12.3¢$4.59
Ohio19.5¢$7.25
Oklahoma13.3¢$4.95
Oregon15.8¢$5.87
Pennsylvania21.5¢$7.98
Rhode Island28.3¢$11
South Carolina17.1¢$6.34
South Dakota14.5¢$5.40
Tennessee14.9¢$5.56
Texas17.0¢$6.32
Utah13.3¢$4.94
Vermont24.6¢$9.13
Virginia17.4¢$6.46
Washington14.4¢$5.34
West Virginia16.1¢$5.97
Wisconsin19.2¢$7.14
Wyoming14.7¢$5.46

Certified models closest in efficiency

computer monitors within reach of 37 kWh/yr
ModelkWh/yr$/yr (US avg)
Acer V227Q37$7.00
Sharp DD-E244F37$7.00
LG 24BF450B37$7.00
ASUS VA24EHF37$7.00
Lenovo D17238FE037$6.99
ASUS VA279QGSmost efficient37$7.01

Run your own numbers

Your rate, your numbers

Per day
2¢
Per month
$0.58
Per year
$6.97

37 kWh/yr × 18.8¢/kWh = $6.97/yr

Prefilled with this model's certified 37 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 Vastec MF2739-K use?
ENERGY STAR certifies the Vastec MF2739-K at 37 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 Vastec MF2739-K cost to run per month?
About $0.58 a month at the U.S. average residential rate (18.8¢/kWh) — 2¢ a day, or $7.00 a year. Your state's rate moves this up or down; see the table above.
Is the Vastec MF2739-K energy efficient?
It uses 18% less electricity than the median certified computer monitor, placing it in the efficient third of certified models. It also meets ENERGY STAR's Most Efficient criteria.
What does the Vastec MF2739-K cost to run in the cheapest vs. priciest state?
At current residential rates it costs about $4.59 a year in North Dakota (12.3¢/kWh) and $17 in Hawaii (46.6¢/kWh).

Keep digging