Data through April 2026
Running cost · Computer Monitors · ENERGY STAR certified
ASUS C624A
At the standardized usage ENERGY STAR assumes, the ASUS C624A consumes 37 kWh a year — about $6.87 at the U.S. average electricity rate ($0.57 a month). That's 19% less than the median certified computer monitor, placing it comfortably in the efficient third of the field (295 of 1482). The same unit costs $4.51 a year in North Dakota but $17 in Hawaii — electricity rates, not the appliance, make the difference.
Estimated annual running cost · U.S. average rate 18.8¢/kWh
$6.87/yr
- Per month
- $0.57
- Per day
- 2¢
- Certified use
- 37 kWh/yr
- Screen size
- 23.8 in
- Panel
- IPS LCD
- On-mode power
- 11.5 W
- Sleep-mode power
- 0.2 W
What it costs in every state
| State | Rate ¢/kWh | This model $/yr | Relative cost |
|---|---|---|---|
| Alabama | 17.4¢ | $6.35 | |
| Alaska | 27.4¢ | $9.98 | |
| Arizona | 15.5¢ | $5.65 | |
| Arkansas | 14.2¢ | $5.17 | |
| California | 35.3¢ | $13 | |
| Colorado | 16.5¢ | $6.04 | |
| Connecticut | 32.2¢ | $12 | |
| Delaware | 18.8¢ | $6.86 | |
| District of Columbia | 25.4¢ | $9.27 | |
| Florida | 15.4¢ | $5.61 | |
| Georgia | 15.4¢ | $5.61 | |
| Hawaiipriciest | 46.6¢ | $17 | |
| Idaho | 12.7¢ | $4.64 | |
| Illinois | 20.5¢ | $7.47 | |
| Indiana | 17.9¢ | $6.53 | |
| Iowa | 13.9¢ | $5.06 | |
| Kansas | 15.8¢ | $5.76 | |
| Kentucky | 15.0¢ | $5.48 | |
| Louisiana | 14.4¢ | $5.27 | |
| Maine | 28.4¢ | $10 | |
| Maryland | 22.1¢ | $8.06 | |
| Massachusetts | 29.4¢ | $11 | |
| Michigan | 21.4¢ | $7.81 | |
| Minnesota | 16.4¢ | $5.98 | |
| Mississippi | 16.8¢ | $6.12 | |
| Missouri | 14.0¢ | $5.11 | |
| Montana | 13.9¢ | $5.07 | |
| Nebraska | 13.3¢ | $4.85 | |
| Nevada | 14.3¢ | $5.22 | |
| New Hampshire | 27.2¢ | $9.94 | |
| New Jersey | 23.5¢ | $8.59 | |
| New Mexico | 15.2¢ | $5.53 | |
| New York | 29.4¢ | $11 | |
| North Carolina | 16.3¢ | $5.93 | |
| North Dakotacheapest | 12.3¢ | $4.51 | |
| Ohio | 19.5¢ | $7.11 | |
| Oklahoma | 13.3¢ | $4.86 | |
| Oregon | 15.8¢ | $5.76 | |
| Pennsylvania | 21.5¢ | $7.84 | |
| Rhode Island | 28.3¢ | $10 | |
| South Carolina | 17.1¢ | $6.23 | |
| South Dakota | 14.5¢ | $5.30 | |
| Tennessee | 14.9¢ | $5.45 | |
| Texas | 17.0¢ | $6.20 | |
| Utah | 13.3¢ | $4.85 | |
| Vermont | 24.6¢ | $8.96 | |
| Virginia | 17.4¢ | $6.34 | |
| Washington | 14.4¢ | $5.24 | |
| West Virginia | 16.1¢ | $5.86 | |
| Wisconsin | 19.2¢ | $7.01 | |
| Wyoming | 14.7¢ | $5.36 |
Certified models closest in efficiency
| Model | kWh/yr | $/yr (US avg) |
|---|---|---|
| MSI PRO MP253 | 37 | $6.87 |
| Acer UT242Y | 37 | $6.87 |
| MSI PRO MP243L E14 | 37 | $6.87 |
| DELL E2225HSf | 37 | $6.88 |
| JETWING, SELENO, TICNOVA JWG-238 | 36 | $6.86 |
| LG 22BL450Y | 36 | $6.86 |
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 ASUS C624A use?
- ENERGY STAR certifies the ASUS C624A 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 ASUS C624A cost to run per month?
- About $0.57 a month at the U.S. average residential rate (18.8¢/kWh) — 2¢ a day, or $6.87 a year. Your state's rate moves this up or down; see the table above.
- Is the ASUS C624A 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 ASUS C624A cost to run in the cheapest vs. priciest state?
- At current residential rates it costs about $4.51 a year in North Dakota (12.3¢/kWh) and $17 in Hawaii (46.6¢/kWh).